Exhibit 10.2

                     AMENDED AND RESTATED LOCK-UP AGREEMENT

                          LOUISIANA-PACIFIC CORPORATION


August 2, 1999

CONFIDENTIAL

To the parties identified in Schedule "B" hereof
(the "Sellers")

c/o: Jean-Jacques Cossette
1200 1re Avenue
Val d'Or, Quebec
J9P 1Z5

Dear Sirs:


This letter agreement (the "Agreement") sets out the terms and conditions upon
which Louisiana-Pacific Corporation (the "Offeror") will, either directly or
through a wholly-owned subsidiary, make an offer on the terms summarized in
Schedule "A" to this Agreement (the "Offer") for all of the issued and
outstanding Class A Multiple Voting Shares (the "Class A Shares") and all of the
issued and outstanding Class B Subordinate Voting Shares (the "Class B Shares,
and collectively with the Class A shares, the "Common Shares") of Le Groupe
Forex Inc. (the "Corporation") at the price per Common Share specified in
Schedule "A". This Agreement amends and restates the Lock-Up Agreement dated
June 25, 1999 as amended on July 21, 1999 between the Offeror and the Sellers.


This Agreement also sets out the terms and conditions of the agreement by each
of the Sellers to deposit irrevocably and unconditionally under the Offer that
number of Common Shares set forth opposite their respective names on Schedule
"B" hereof, including that number of Common Shares to be issued pursuant to the
exercise of the options referred to therein (in the aggregate, the "Securities",
and, individually, "its portion of the Securities"), and sets out the
obligations and commitments of the Sellers in connection therewith.

1.       THE OFFER

1.1      TIMING. The Offeror agrees to make the Offer for 100% of the Common
         Shares as soon as possible but in any event not more than ten (10)
         calendar days after the date of this Agreement provided that, if the
         Corporation has given to the Offeror a notice contemplated by Section
         3.2(j) of the Support Agreement (as defined




                                      -2-


         hereunder) prior to the making of the Offer, such ten (10) day period
         may, at the option of the Offeror, be extended by ten (10) days.

1.2      CONDITIONS PRECEDENT. Notwithstanding Section 1.1, the Offeror shall
         not be required to make the Offer (and shall, if it determines not to
         make the Offer, without prejudice to any other rights, terminate this
         Agreement by written notice to the Sellers and the Corporation) if:

         (a)      prior to the making of the Offer, (i) any act, action, suit or
                  proceeding shall have been taken before or by any domestic or
                  foreign court or tribunal or governmental agency or other
                  regulatory authority or administrative agency or commission by
                  any elected or appointed public official or private person
                  (including, without limitation, any individual, corporation,
                  firm, group or other entity) in Canada or elsewhere, or (ii)
                  any law, regulation or policy shall have been proposed,
                  enacted, promulgated or applied:

                  a.       to cease trade, enjoin, prohibit or impose material
                           limitations or conditions on the purchase by or the
                           sale to the Offeror of the Common Shares or any of
                           them pursuant to the Offer or the right of the
                           Offeror to own or exercise full rights of ownership
                           of the Common Shares or any of them; or

                  b.       which, if the Offer was consummated, would, in the
                           judgment of the Offeror, acting reasonably,
                           materially and adversely affect the Corporation and
                           each of Forex OSB Inc. and Forex Chambord Inc. (the
                           "Subsidiaries") considered as a whole;

         (b)      at the time the Offeror proposes to make the Offer, there
                  exists any prohibition at law (other than those referred to in
                  paragraphs 3(b), (c) or (d) of Schedule "A" hereto) against
                  the Offeror making the Offer or taking up and paying for 100%
                  of the Common Shares under the Offer;

         (c)      there shall have occurred (or there shall have been generally
                  disclosed, if previously undisclosed generally) any change
                  (other than a change in the market conditions or price of
                  O.S.B.)(or any condition, event or development involving a
                  prospective change) in the business, assets, capitalization,
                  financial condition, licenses, permits, rights or privileges,
                  whether contractual or otherwise, of the Corporation or any of
                  its Subsidiaries which, in the judgment of the Offeror, acting
                  reasonably, is or would be materially adverse to the
                  Corporation and its Subsidiaries considered as a whole;

         (d)      the Offeror shall not have obtained assurances acceptable to
                  it with respect to




                                      -3-


                  CAAFS held by the Corporation or such appropriate governmental
                  authorities as it shall consider desirable to ensure that
                  there will be no termination, default (other than a default
                  resulting from a change of control), breach or other adverse
                  effects on the Corporation or the Subsidiaries as a result of
                  the transactions contemplated herein;

         (e)      the agreement entered into on the date hereof between the
                  Corporation and the Offeror whereby the Corporation agreed to
                  support the Offer, is not in full force and effect (the
                  "Support Agreement");

         (f)      any representation or warranty of any of the Sellers in this
                  Agreement or any representation or warranty of the Corporation
                  in the Support Agreement shall not have been, as of the date
                  made, true and correct in all material respects, or the
                  Corporation or any of the Sellers shall not have respectively
                  performed in all material respects any covenant or complied
                  with any agreement to be performed by them or it under this
                  Agreement and the Support Agreement; or

         (g)      all non-unionized individuals working for the Corporation as a
                  result of services agreement entered into between the
                  Corporation and companies controlled by insiders of the
                  Corporation shall not have agreed to become employees of the
                  Corporation before the Offeror takes up and pays for the
                  Common Shares (the "Effective Date").


The foregoing conditions are for the sole benefit of the Offeror and may be
waived by the Offeror in whole or in part at any time and shall be deemed to
have been waived by it by the making of the Offer.

2.       Acceptance

2.1      DEPOSIT. Subject to the terms and conditions hereof, each of the
         Sellers hereby irrevocably agrees to deposit its portion of the
         Securities, together with a completed and executed letter of
         transmittal, under the Offer as soon as practicable after the Offer has
         been made and, in any event, on or before the third business day after
         the date that the Offer is made, except that all of the Common Shares
         issuable upon the exercise of the options listed in Schedule B may be
         deposited no later than twenty-four (24) hours prior to the expiry of
         the Offer.

2.2      NON-WITHDRAWAL. Each of the Sellers hereby irrevocably agrees not to
         withdraw or take any action to withdraw any of its portion of the
         Securities following their deposit under the Offer, notwithstanding any
         statutory rights or other rights under the terms of the Offer or
         otherwise which it might have, unless this Agreement is terminated in
         accordance with its terms prior to the taking up of the Securities




                                      -4-


         under the Offer;

3.       Representations and Warranties

3.1 REPRESENTATIONS AND WARRANTIES OF THE SELLERS. Each of the Sellers hereby
represents and warrants that:

         (a)      it is a corporation duly incorporated or created and validly
                  existing under the laws of its jurisdiction of incorporation
                  or creation, if applicable; it has the corporate or other
                  power, if applicable, and capacity and has received all
                  requisite approvals, if applicable, to enter into this
                  Agreement and to complete the sale of its portion of the
                  Securities pursuant to the Offer; this Agreement has been duly
                  executed and delivered by the Sellers and is a valid and
                  binding agreement enforceable by the Offeror against it in
                  accordance with its terms, subject to the usual exceptions as
                  to bankruptcy and the availability of equitable remedies;

         (b)      it is and, upon the deposit of its portion of the Securities
                  under the Offer, will be the sole legal and beneficial owner
                  of such Securities and will have the exclusive right to vote
                  and dispose thereof as provided in this Agreement and it is
                  not a party to, bound or affected by or subject to, any
                  provision of its constating documents if applicable, or any
                  statute, regulation, judgment, order, decree or law which
                  would be violated, contravened, breached by, or under which
                  default would occur as a result of, the execution and delivery
                  of this Agreement;

         (c)      the portion of the Securities to be acquired by the Offeror
                  from it pursuant to the Offer will be acquired by the Offeror
                  with good and marketable title, free and clear of any and all
                  hypothecs, mortgages, liens, charges, proxies, voting
                  agreements, encumbrances and adverse claims, save for the
                  charges which will be released on or before the Effective
                  Date;

         (d)      other than as disclosed to the Offeror prior to the execution
                  of this Agreement, there does not exist any agreement,
                  understanding or commitment giving rise to any material
                  obligations, financial or otherwise, on the part of the
                  Corporation or any of its Subsidiaries to such Seller or any
                  of its affiliates (or any associates or insiders of any of the
                  foregoing);

         (e)      other than as disclosed to the Offeror prior to the execution
                  of this Agreement, the execution and delivery of this
                  Agreement and the fulfillment of the terms hereof and thereof
                  by it do not and will not result in a breach of (a) its
                  constating documents, if applicable, or (b) any agreement or
                  instrument to which it is a party or by which it is
                  contractually bound which would have a material adverse effect
                  upon it; and




                                      -5-


         (f)      to the best of their knowledge, the Corporation has not
                  omitted to disclose to the Offeror any information concerning
                  the Corporation, its business, assets, operations, capital,
                  affairs, financial conditions and prospects that a purchaser
                  would consider material in circumstances similar to the
                  transaction contemplated herein.

3.2      REPRESENTATIONS AND WARRANTIES OF THE OFFEROR. The Offeror hereby
         represents and warrants that:

         (a)      the Offeror is a corporation duly incorporated and validly
                  existing under the laws of its jurisdiction of incorporation;

         (b)      the Offeror has the financial resources and is financially
                  capable of completing the Offer; and

         (c)      the Offeror has the requisite corporate power and authority to
                  enter into this Agreement and to perform its obligations
                  hereunder; the execution and delivery of this Agreement by
                  Offeror and the consummation by the Offeror of the
                  transactions contemplated by this Agreement have been duly
                  authorized by the board of directors of the Offeror and no
                  other corporate proceedings on the part of the Offeror are
                  necessary to authorize this Agreement or the transactions
                  contemplated hereby and this Agreement has been duly executed
                  and delivered by Offeror and constitutes a valid and binding
                  agreement of the Offeror, enforceable against the Offeror in
                  accordance with its terms subject to the usual exceptions as
                  to bankruptcy and the availability of equitable remedies.

4.       Covenants of the Sellers

4.1      GENERAL. Each of the Sellers hereby covenants that until the Offeror
         has taken up and paid for the Common Shares under the Offer or
         abandoned the Offer or the terms of this Agreement have been terminated
         by the Sellers pursuant to Section 6.1, it will:

         (a)      not take any action of any kind which may reduce the
                  likelihood of success of or delay the completion of the Offer,
                  including but not limited to any action that the Corporation
                  would be prohibited from taking under the first sentence of
                  Section 3.2 (f) of the Support Agreement without regard to the
                  proviso thereof, and will not participate in any negotiations
                  regarding, or otherwise cooperate in any way with or assist or
                  participate in:

                           (i)      the direct or indirect acquisition or
                                    disposition of all or any Common Shares or
                                    any other securities of the Corporation or
                                    its




                                      -6-


                                    Subsidiaries (except as expressly provided
                                    in this Agreement); or

                           (ii)     except as expressly permitted by this
                                    Agreement or as previously approved in
                                    writing by the Offeror, any amalgamation,
                                    merger, sale of any material part of the
                                    Corporation's or its Subsidiaries' assets,
                                    take-over bid, plan of arrangement,
                                    reorganization, recapitalization,
                                    liquidation or winding-up of, or other
                                    business combination or similar transaction
                                    involving the Corporation or any of its
                                    Subsidiaries;



         (b)      notify the Offeror forthwith upon becoming aware of any
                  Acquisition Proposal (as defined in Section  3.2(f) of the
                  Support Agreement) and inform  the Offeror of all
                  information (including  the identity of any prospective
                  offeror)  known to the Seller at that time regarding  such
                  proposal;

         (c)      cause the voting rights attaching to its portion of the
                  Securities to be exercised to oppose any proposed action by:
                  (i) the Corporation, its shareholders or others which might
                  reasonably be regarded as being directed towards or likely to
                  prevent or delay the successful completion of the Offer, or
                  (ii) the Corporation or its shareholders to materially change
                  the business, assets, operations, capital, affairs, financial
                  conditions, licenses, permits, rights or privileges, whether
                  contractual or otherwise, or prospects of the Corporation and
                  its Subsidiaries taken as a whole which in the judgment of the
                  Offeror, acting reasonably, could individually, or in the
                  aggregate, adversely affect the value of the Common Shares to
                  the Offeror, provided that nothing in this Agreement shall
                  require the Sellers to request any of their directors or
                  officers who may be a director of the Corporation or any
                  Sellers who are themselves a director to take any action or to
                  refrain from taking any action as a director of the
                  Corporation or to act otherwise than in accordance with his or
                  her fiduciary duties as a director of the Corporation;

         (d)      use its reasonable commercial efforts to assist the Offeror to
                  successfully complete the acquisition of Common Shares,
                  including diligently pursuing all requisite regulatory
                  approvals and co-operating with the Offeror in making all
                  requisite regulatory filings and giving evidence in relation
                  thereto;

         (e)      promptly advise the Offeror orally and in writing of any
                  material change (other than a change in the market conditions
                  or price of O.S.B. known to the Seller in the condition
                  (financial or otherwise), properties, assets, liabilities,
                  operations, business or prospects of the Corporation or any of
                  its Subsidiaries;




                                      -7-


         (f)      promptly notify the Offeror upon any representation or
                  warranty of it or the Corporation contained in this Agreement
                  becoming untrue or incorrect in any material respect during
                  the period commencing on the date hereof and expiring at the
                  time of expiry of the Offer, and for the purposes of this
                  provision, each representation and warranty shall be deemed to
                  be given at and as of all times during such period
                  (irrespective of any language which suggests that it is only
                  being given as at the date hereof);

         (g)      cause its nominees on the board of directors of the
                  Corporation and its Subsidiaries, and use its reasonable best
                  efforts to cause all members of the board of directors of the
                  Corporation and its Subsidiaries, to resign at the time and in
                  the manner requested by the Offeror, after the Offeror takes
                  up and pays for the Securities; and

         (h)      use its reasonable best efforts to cause the Corporation to
                  comply with its covenants contained in the Support Agreement.

4.2      OPTIONS. Each of the Sellers hereby covenants to exercise all options
         set out in Schedule B next to his name, if any, at least twenty-four
         (24) hours before the expiry of the Offer or to have such options
         cancelled.

4.3      AMENDMENT TO LOCK-UP AGREEMENT. In the event that the Corporation
         enters into an amendment to the Support Agreement in accordance with
         section 3.2(k) thereof, each of the Sellers hereby covenants to enter
         into an amendment to this Agreement that shall reflect the terms of
         such amended Support Agreement.

5.       Covenants of the Offeror

5.1      OFFEROR. Subject to the terms and conditions hereof, the Offeror hereby
         covenants to:

         (a)      use its reasonable commercial efforts to successfully complete
                  the Offer, including diligently pursuing all requisite
                  regulatory approvals;

         (b)      co-operate with the Sellers and the Corporation in making all
                  requisite regulatory filings, and giving evidence in relation
                  thereto, and to provide copies of all written documents and
                  submissions and responses with respect thereto in connection
                  with regulatory proceedings;

         (c)      provide copies of drafts of the Offer to Mr. Jean-Jacques
                  Cossette on behalf of the Sellers in order to provide them
                  with an opportunity to comment; and

         (d)      use its reasonable commercial efforts to file with the
                  Director of Investigation and Research appointed under the
                  COMPETITION ACT (Canada) the notice




                                      -8-


                  required under Section 123 of said act prior to the expiry of
                  the delay referred to in Section 1.1 hereof, notwithstanding
                  the fact that the Offer may have been made prior thereto.

5.2      CONFIDENTIALITY AGREEMENT. The Offeror hereby covenants and agrees to
         be bound by the terms of the confidentiality agreement dated June 18,
         1999 between the Offeror and the Corporation (the "Confidentiality
         Agreement") throughout the term of this Agreement and in the event that
         this Agreement is terminated for any reason whatsoever. Pursuant to the
         Support Agreement, the Corporation has confirmed and agreed that the
         Confidentiality Agreement will be null and void in the event that the
         Offeror takes up and pays for Common Shares (including the Securities)
         under the Offer. Furthermore, in such circumstances, each of the
         Sellers agrees to hold all Information (as defined below) confidential
         and not to use it in any way detrimental to the interests of the
         Offeror, the Corporation or its Subsidiaries, except as required by
         law. For the purposes hereof, "Information" has the meaning ascribed to
         such expression in the Confidentiality Agreement.

6.       Termination

6.1      TERMINATION BY SELLERS. All of the Sellers, when not in default in
         performance of their respective material obligations under this
         Agreement, may, without prejudice to any other rights, terminate their
         obligations under this Agreement by notice to the Offeror if:

         (a)      the Offer has not been made within the time period provided in
                  Section 1.1;

         (b)      the Offer does not conform in all material respects with the
                  description of the Offer in Schedule "A";

         (c)      the Offeror has not taken up and paid for the Securities on or
                  prior to December 31, 1999;

         (d)      Common Shares deposited under the Offer (including the
                  Securities) have not, for any reason whatsoever (other than
                  that all the terms and conditions of the Offer have not been
                  complied with or waived by the Offeror) been taken up and paid
                  for on or before the expiry of ten days after the expiry of
                  the Offer (as it may have been extended); or

         (e)      A Break Fee Event described in clause (x) of Section 5.1 of
                  the Support Agreement shall have occurred, provided that no
                  termination under this paragraph shall be effective unless and
                  until the Corporation shall have paid the Offeror by bank
                  draft or wire transfer the sum of $28 million in immediately
                  available funds (the "Break Fee").




                                      -9-


6.2      TERMINATION BY OFFEROR. The Offeror, when not in default in performance
         of its material obligations under this Agreement, may, without
         prejudice to any other rights, terminate its obligations under this
         Agreement by notice to the Sellers and if:

         (a)      the Offeror has not taken up and paid for the Securities on or
                  prior to December 31, 1999;

         (b)      a Break Fee Event shall have occurred;

         (c)      as a result of the failure of any of the conditions set forth
                  in Schedule "A", the Offer shall have expired or have been
                  terminated in accordance with its terms without the Offeror
                  having purchased any Common Share pursuant to the Offer; or

         (d)      the Sellers or the Corporation shall have breached in any
                  material respect any of their respective representations,
                  warranties, covenants or other agreements contained in this
                  Agreement or the Support Agreement.

6.3      EFFECT OF TERMINATION. In the event of the termination of this
         Agreement pursuant to Section 6.1 or 6.2, this Agreement (except for
         Sections 6.1((e)), 6.3 and 7) shall forthwith become void and cease to
         have any force or effect without any liability on the part of any party
         hereto or any of its affiliates; provided however that nothing in this
         Section shall relieve any party to this Agreement of liability for any
         breach of this Agreement.

7.       General

7.1      DISCLOSURE. Except as required by applicable laws or regulations, or as
         required by any competent governmental, judicial or other authority, or
         in accordance with the requirements of any stock exchange, no party
         shall make any public announcement or statement with respect to this
         Agreement or the Support Agreement without the approval of the others,
         which shall not be unreasonably withheld. Moreover, the parties agree
         to consult with each other prior to issuing each public announcement or
         statement with respect to this Agreement or the Support Agreement.

7.2      ASSIGNMENT. The Offeror may assign all or any part of its rights and/or
         obligations under this Agreement to a wholly-owned subsidiary of the
         Offeror, but, if such assignment takes place, the Offeror shall
         continue to be liable to the Sellers for any default in performance by
         the assignee. This Agreement shall not otherwise be assignable by any
         party without the consent of the others.

7.3      GOVERNING LAW. This Agreement shall be governed by and construed in
         accordance





         with the laws of the Province of Quebec and of Canada applicable
         therein (without regard to conflict of laws principles).

7.4      SURVIVAL OF REPRESENTATIONS AND WARRANTIES. The representations and
         warranties made by the Sellers and by the Offeror herein shall survive
         for a period of one year from the date hereof except that any
         representations which prove to be incorrect or untrue as a result of
         tax matters shall survive only as to such tax matters until thirty (30)
         days following the last applicable limitation period under applicable
         tax laws and except in the case of the representations and warranties
         contained in paragraphs 3.1((A)) THROUGH ((E)), INCLUSIVE, which shall
         survive indefinitely, and in the case of fraud. No investigations made
         by or on behalf of the Offeror or any of its authorized agents at any
         time shall have the effect of waiving, diminishing the scope of or
         otherwise affecting any representation, warranty or covenant made by
         any Seller herein or pursuant hereto.

7.5      AMENDMENTS. This Agreement may not be amended except by written
         agreement signed by all of the parties to this Agreement.

7.6      SPECIFIC PERFORMANCE AND OTHER EQUITABLE RIGHTS. Each of the parties
         recognizes and acknowledges that this Agreement is an integral part of
         the Offer, that the Offeror would not contemplate causing the Offer to
         be made and the Sellers would not agree to the deposit of the
         Securities under the Offer unless this Agreement was executed, and that
         a breach by any party of any covenants or other commitments contained
         in this Agreement will cause the other parties to sustain injury for
         which they would not have an adequate remedy at law for money damages.
         Therefore, each of the parties agrees that in the event of any such
         breach, the aggrieved party or parties shall be entitled to the remedy
         of specific performance of such covenants or commitments and
         preliminary and permanent injunctive and other equitable relief in
         addition to any other remedy to which it or they may be entitled, at
         law or in equity, and the parties further agree to waive any
         requirement for the securing or posting of any bond in connection with
         the obtaining of any such injunctive or other equitable relief.

7.7      EXPENSES. Each of the Sellers shall pay its legal, financial advisory
         and accounting costs and expenses incurred in connection with the
         preparation, execution and delivery of this Agreement and all documents
         and instruments executed or prepared pursuant to this Agreement and any
         other costs and expenses whatsoever and howsoever incurred, and none of
         such costs and expenses shall be borne by the Corporation or its
         Subsidiaries. The Offeror shall pay its legal, financial advisory and
         accounting costs and expenses incurred in connection with the
         preparation, execution and delivery of this Agreement and all documents
         and instruments executed or prepared pursuant to this Agreement and any
         other costs and expenses whatsoever and howsoever incurred. The Sellers
         shall bear all costs and expenses of obtaining the necessary consents,
         and shall indemnify and hold harmless the Offeror, the Corporation and
         its Subsidiaries against all




                                      -11-


         claims in respect thereof.

7.8      BUSINESS DAY. A business day for the purpose of this Agreement shall
         mean any day on which chartered banks in the City of Montreal are open
         for business.

7.9      COUNTERPARTS. This Agreement may be executed in one or more
         counterparts which together shall be deemed to constitute one valid and
         binding agreement, and delivery of the counterparts may be effected by
         means of a telecopier transmission.

7.10     SCHEDULE. Schedules "A" and "B" hereto shall for all purposes form an
         integral part of this Agreement.

7.11     ENTIRE AGREEMENT. This Agreement, together with the Confidentiality
         Agreement (as defined herein) and any document referred to herein,
         constitutes the entire agreement and understanding between the parties
         pertaining to the subject matter of this Agreement.

7.12     TIME. Time shall be of the essence in this Agreement.

7.13     CURRENCY. All sums of money referred to in this Agreement shall mean
         Canadian funds.

7.14     NOTICES. Any notice, request, consent, agreement or approval which may
         or is required to be given pursuant to this Agreement shall be in
         writing and shall be sufficiently given or made if delivered, or sent
         by telecopier, in the case of:

         (a)      the Offeror, addressed as follows:

                        Louisiana-Pacific Corporation
                        111 South West Fifth
                        Portland, Oregon
                        USA 97204


                        Attention: The Office of the General Counsel

                        Telecopier No. (503) 796-0105

                  with a copy to:




                                      -12-


                        Stikeman, Elliott
                        Suite 4000
                        1155 West Rene-Levesque Blvd.
                        Montreal, Quebec H3B 3V3


                        Attention: Pierre A. Raymond

                        Telecopier No.: (514) 397-3222

         (b)      in the case of the Sellers, addressed as follows:


                        Mr. Jean-Jacques Cossette
                        1200, 1ere Avenue
                        Val d'Or, Quebec
                        J9P 1Z5

                  with a copy to:


                        Martineau Walker
                        Tour de la Bourse
                        800, Place Victoria, Suite 3400
                        Montreal, Quebec
                        H4Z 1E9

                        Attention: Maurice Forget

                        Telecopier No.: (514) 397-7600

or to such other address as the relevant party may from time to time advise by
notice in writing given pursuant to this Section. The date of receipt of any
such notice, request, consent, agreement or approval shall be deemed to be the
date of delivery or sending thereof.

8.       Special Provisions

8.1      JOINT CONDUCT. Notwithstanding any other provision hereof, the Offeror
         shall upon its written election have no obligations hereunder to any of
         the Sellers if any Seller fails to comply with the terms hereof or with
         any of its covenants or agreements hereunder or if any of the
         representations or warranties of any Seller prove to be incorrect or
         untrue in any material respect. Furthermore, if any Seller shall
         terminate its obligations under this Agreement as provided herein, any
         obligations of the Offeror may be terminated with respect to all
         Sellers at the Offeror's written election.

8.2      COMMON SHARES. References to "Common Shares" include any shares into
         which the foregoing may be reclassified, sub-divided, consolidated or
         converted and any rights and benefits arising therefrom including any
         extraordinary distributions of




                                      -13-


         securities which may be declared in respect of the Common Shares.

8.3      WAIVERS AND RELEASES. Following the taking up of Securities under the
         Offer, the Sellers hereby agree that they shall be deemed to have
         waived all pre-emptive rights or other rights to acquire securities of
         the Corporation or any subsidiary, and to have agreed to release the
         Corporation and its Subsidiaries from all claims, obligations or
         liabilities whatsoever.

                                  ------------





                                      -14-


If the terms and conditions of this letter are acceptable to you, please so
indicate by executing and returning the enclosed copy hereof to the undersigned
prior to 8:00 p.m. (Montreal time) on August 2, 1999, failing which this offer
shall be null and void.


                                                Yours truly,

                                                Louisiana-Pacific Corporation


                                        By: /s/ Gary Wilkerson
                                            ------------------------------------
                                            Gary Wilkerson

Agreed and accepted this 2nd day of August 1999

                                            PLACEMENTS AL-VI INC.


                                        By: /s/ J. J. Cossette
                                            ------------------------------------


                                            2330-3076 QBC. INC.

                                        By: /s/ J. J. Cossette
                                            ------------------------------------


                                            2954-7635 QUEBEC INC.

                                        By: /s/ J. J. Cossette
                                            ------------------------------------


                                        By: /s/ J. J. Cossette
                                            ------------------------------------
                                            Jean-Jacques Cossette


                                        By: /s/ Viviane Cossette
                                            ------------------------------------
                                                Viviane Cossette




                                      -15-


                                        By: /s/ Fernand Cossette
                                            ------------------------------------
                                                Fernand Cossette


                                        By: /s/ Andre J. Lascelle
                                            ------------------------------------
                                                Andre J. Lascelle



                                        2700638 CANADA INC.


                                        By: /s/ Pierre Moreau
                                            ------------------------------------


                                        By: /s/ Pierre Moreau
                                            ------------------------------------
                                                Pierre Moreau


                                        By: /s/ Norman Farrell
                                            ------------------------------------
                                                Norman Farrell



                                        9008-6760 QUEBEC INC.



                                        By: /s/ Marcel Cossette
                                            ------------------------------------
                                                Marcel Cossette



                                        By: /s/ Marcel Cossette
                                            ------------------------------------
                                                Marcel Cossette




                                      -16-


                                  SCHEDULE "A"

                               TERMS OF THE OFFER

1.       GENERAL TERMS. The Offer shall be made by a circular bid prepared in
         compliance with the Securities Act (Quebec) and other applicable
         provincial securities laws. The Offer shall be open for twenty-one (21)
         days or such longer period as may be required to satisfy all of the
         conditions set forth in paragraph 3 below, provided that in no event
         shall the Offer be required to be open after December 31, 1999.

2.       PRICE OF THE OFFER. The Offer shall be made for a consideration of not
         less than Cdn. $31.00 per Common Share payable, at the option of the
         holder, in cash, by the delivery of Instalment Notes (which shall be
         deemed for purposes of the Offer to have a value equal to the original
         principal amount thereof) or a combination thereof.

3.       CONDITIONS OF THE OFFER. The Offer shall not be subject to any
         conditions other than those substantially described as follows:

         (a)      not less than 66 2/3% of the outstanding Class A Multiple
                  Voting Shares and not less than 66-2/3% of the outstanding
                  Class B Subordinate Voting Shares (on a fully-diluted basis,
                  assuming that all rights to acquire Common Shares were to be
                  exercised in full) are tendered under the Offer and not
                  withdrawn at the expiration of the Offer;

         (b)      (i) the Commissioner of Competition (the "Commissioner")
                  appointed under the Competition Act (Canada) (the "Act") shall
                  have issued an advance ruling certificate under section 102 of
                  the Act in respect of the transaction (the "Transaction")
                  which will result from the Offer; (ii) the Commissioner shall
                  have advised the Offeror that he does not intend at the
                  current time to apply to the Competition Tribunal for an order
                  under section 92 of the Act in respect of the Transaction; or
                  (iii) the applicable waiting period under section 123 of the
                  Act shall have expired without the Commissioner having
                  notified the Offeror that he intends to apply to the
                  Competition Tribunal for an order under section 92 of the Act
                  in respect of the Transaction; and no proceedings shall have
                  been taken or threatened under the merger provisions of Part
                  VIII or under section 45 of the Act in respect of the
                  Transaction;

         (c)      any applicable waiting periods under the Hart-Scott-Rodino
                  Antitrust Improvements Act of 1976 shall have expired or been
                  earlier terminated;

         (d)      any other requisite regulatory approvals or requirements
                  (including without




                                      -17-


                  limitation those of stock exchanges and securities regulatory
                  authorities and under the Investment Canada Act,) shall have
                  been obtained or satisfied on terms satisfactory to the
                  Offeror;

         (e)      (i) no act, action, suit or proceeding shall have been
                  threatened or taken before or by any domestic or foreign court
                  or tribunal or governmental agency or other regulatory
                  authority or administrative agency or commission by any
                  elected or appointed public official or private person
                  (including, without limitation, any individual, corporation,
                  firm, group or other entity) in Canada or elsewhere and (ii)
                  no law, regulation or policy shall have been proposed,
                  enacted, promulgated or applied:

                  a.       to cease trade, enjoin, prohibit or impose material
                           limitations or conditions on the purchase by or the
                           sale to the Offeror of the Common Shares or any of
                           them pursuant to the Offer or the right of the
                           Offeror to own or exercise full rights of ownership
                           of the Common Shares or any of them, or

                  b.       which if the Offer was consummated, would materially
                           and adversely affect the Corporation and its
                           Subsidiaries considered on a consolidated basis or
                           the Offeror;

         (f)      there shall not exist any prohibition at law against the
                  Offeror making the Offer or taking up and paying for 100% of
                  the Common Shares under the Offer;

         (g)      there shall not have occurred any change after December 31,
                  1998 (other than a change in the market conditions or price of
                  O.S.B.)(or any condition, event or development involving a
                  prospective change) in the business, assets, capitalization,
                  financial condition, licences, permits, rights or privileges,
                  whether contractual or otherwise, of the Corporation or any of
                  its Subsidiaries considered as a whole which was not disclosed
                  prior to the Offer in writing to the Offeror, and which, in
                  the judgment of the Offeror, acting reasonably, is or would be
                  materially adverse to the Corporation and its Subsidiaries
                  considered as a whole;

         (h)      the Offeror shall have obtained assurances acceptable to it
                  with respect to CAAFS held by the Corporation or such
                  appropriate governmental authorities as it shall consider
                  desirable to ensure that there will be no termination, default
                  (other than a default resulting from a change of control),
                  breach or other adverse effects on the Corporation or the
                  Subsidiaries as a result of the transactions contemplated
                  herein; and

         (i)      any representation or warranty of any of the Sellers and the
                  Corporation in this




                                      -18-


                  Agreement and in the Support Agreement shall not have been, as
                  of the date made, true and correct in all material respects,
                  or the Corporation or any of the Sellers shall not have
                  performed in all material respects any covenant or complied
                  with any agreement to be performed by them under the Support
                  Agreement and this Agreement.


The foregoing conditions will be for the sole benefit of the Offeror and may be
waived by it in whole or in part at any time.

4.       TERMS OF INSTALMENT NOTES. The Instalment Notes shall be issued by a
         Canadian corporation pursuant to a note indenture and the principal
         terms thereof shall be:

         (a)      interest rate: annual interest rate equal to the rate secured
                  by the Offeror on the indebtedness incurred to finance the
                  Offer from its principal bankers payable quarterly calculated
                  in arrears;

         (b)      instalments: 20% of the principal payable on the Effective
                  Date and 20% on the first, second, third and fourth
                  anniversary of the issuance of the notes (it being understood
                  that, if the initial principal payment is duly paid or
                  provided for on the Effective Date, the notes need represent
                  only the principal payments due after the Effective Date);

         (c)      guarantee: unconditionally guaranteed by Offeror;

         (d)      security: unsecured, ranking PARI PASSU with indebtedness to
                  ordinary creditors of the issuer;

         (e)      events of default: customary, including non-payment of
                  instalment or interest and insolvency of issuer or guarantor;


         (the "Instalment Notes")

5.       HOLDCO PURCHASE. The Offer will provide that any holder of Common
         Shares which holds such Common Shares indirectly through a holding
         corporation (a "Holdco") may deposit all of the outstanding shares of
         its Holdco under the Offer. Any such deposit of shares of a Holdco as
         opposed to the deposit of the underlying Common Shares shall be subject
         to customary conditions, including (i) any required approval under
         applicable securities laws, (ii) the relevant Seller providing
         representations, warranties and indemnities reasonably satisfactory to
         the Offeror, including as to the absence of any liabilities in the
         relevant Holdco and of any asset other than Common Shares, and (iii)
         each Seller who deposits shares of a Holdco shall reimburse the Offeror
         for any additional costs that will




                                      -19-


         be incurred as a result of the acquisition of such Holdco.




                                      -20-


                                  SCHEDULE "B"





                               Class a               Class B            Options              Total
                               Shares                Shares
                                                                               
Placements Al-Vi Inc.         3,320,663               23,402                               3,344,065
2330-3076 QBC. Inc.           2,653,486                                                    2,653,486
Jean-Jacques Cossette           285,464                2,200              200,000            487,664
2954-7635 Quebec                173,650              233,100                                 406,750
Inc.
Viviane Cossette                  8,204                                   200,000            208,204
Fernand Cossette                658,825                3,002              200,000            861,827
9008-6760 Quebec                385,064                    2                                 385,066
Inc.
Marcel Cossette                 235,245                                                      235,245
Andre J. Lascelle               192,441               14,720              200,000            407,161
Pierre Moreau                   200,000                  500              150,000            350,500
2700638 Canada Inc.              56,350                                                       56,350
Norman Farrell                  200,020                                   150,000            350,020
       Lock-up Group          8,369,412              276,926            1,100,000          9,746,338