IN THE UNITED STATES DISTRICT COURT
                           FOR THE DISTRICT OF OREGON

IN RE LOUISIANA-PACIFIC INNER-SEAL       Civil No. CV-95-879-JO-LEAD
SIDING LITIGATION           
                                         SUPPLEMENTAL FUNDING AGREEMENT

         This SUPPLEMENTAL FUNDING AGREEMENT ("Supplemental Agreement") is dated
and effective as of October 26, 1998, by and between the Plaintiffs in the above
litigation, for themselves and on behalf of the Settlement Class as that term is
defined in the October 18,  1995  Settlement  Agreement  ("Class  Members")  and
defendant Louisiana-Pacific Corporation ("L-P"), collectively, the "Parties."

                                   BACKGROUND

         The Parties entered into a Settlement Agreement on October 18, 1995 and
an Amendment to Settlement  Agreement  dated April 26, 1996,  both of which were
approved  by the Court in the above  matter by its Order,  Final  Judgment,  and
Decree,  dated  April 26,  1996 (the  "Settlement  Agreement").  The  Settlement
Agreement creates a mechanism for the receipt, inspection, and 

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                                              1211 S.W. Fifth Avenue, Suite 1500
                                                   Portland, Oregon  97204
                                                       (503) 727-2000


payment of claims  filed by a Class  Member with the Claims  Administrator.  The
Parties have negotiated this  Supplemental  Agreement in order to offer to Class
Members an alternative to the relief provided by the Settlement Agreement.

         This Supplemental  Agreement does not in any respect alter or amend the
Settlement Agreement,  which remains in full force and effect to the same extent
as if this agreement  never had been  executed.  To the extent Class Members who
have filed claims with the Claims Administrator ("Claimants") individually elect
to accept the early payment proposals ("Early Payment") or to participate in the
Second Settlement Fund contained in this Supplemental Agreement,  the provisions
governing such proposals will control the respective  rights and  obligations of
the electing Claimants and L-P.

                                    AGREEMENT

         The Parties agree as follows:
1.       DEFINITIONS

         All  terms  used in this  Supplemental  Agreement  shall  have the same
meaning as set forth in the Settlement Agreement unless otherwise stated in this
agreement. 

2.       ADVICE TO CLAIMANTS 

         As soon as  practicable  following the  execution of this  Supplemental
Agreement, the Claims Administrator will notify in writing each Claimant who has
filed an  approved  claim and whose  property  has been  inspected  of:  (a) the
current  status  of his  claim;  (b)  its  expected  payment  date;  and (c) the
proposals described in this Supplemental  Agreement. 

3.       OFFER OF EARLY PAYMENT - MANDATORY CONTRIBUTIONS 

         (a) Under the terms of the  Settlement  Agreement,  L-P is  required to
contribute  a minimum of $275 million to the  Settlement  Fund over a seven-year
period  (the  "Mandatory  Contributions").  To date,  L-P has  contributed  $195
million to the  Settlement  Fund. The remaining $80 million is payable in annual
installments  on each June 7 of the next four years,  commencing on June 7, 1999
(the  "Remaining $80  Million").  

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                                              1211 S.W. Fifth Avenue, Suite 1500
                                                   Portland, Oregon  97204
                                                       (503) 727-2000


         (b) L-P agrees to offer to each Claimant  whose claim has been approved
by the Claims  Administrator  and who  otherwise is entitled to be paid from the
Remaining  $80 Million an amount equal to the present  value of his Damage Award
discounted  at the rate of 9% per  annum  to  reflect  its  early  payment.  For
example, a Claimant with a Damage Award of $6,000 payable on June 7, 1999 who is
offered an Early Payment on November 1, 1998 would be offered $5,694; a Claimant
with a $6,000  Damage Award payable on June 7, 2000 and offered Early Payment on
November 1, 1998 would be offered an Early Payment of $5,206.

         (c) The amount of the discount of the Early  Payment will be calculated
from the first day of June of the year in which the Damage Award otherwise would
be payable under the Settlement Agreement to the first day of the month in which
the offer is made -- provided  that such  offers are mailed to Class  Members no
later than the 15th day of such month.

4.       OFFER OF EARLY PAYMENT - OPTIONAL CONTRIBUTIONS 

         (a) In addition to the Mandatory Contributions, under the circumstances
described  in the  Settlement  Agreement,  L-P may make two optional $50 Million
contributions   to   the   Settlement   Fund   (the   "$100   Million   Optional
Contributions"). If L-P elects to make the two optional contributions, the first
is payable in August, 2001, and the second, in August, 2002.

         (b) L-P agrees to offer to pay to each  Claimant  whose  claim has been
approved by the Claims  Administrator  and who  otherwise is entitled to be paid
from the proceeds of the $100 Million Optional  Contributions an amount equal to
the present value of his Damage Award discounted at the rate of 12% per annum to
reflect its early payment and the elimination of the uncertainty of payment. For
example,  a Claimant with a Damage Award of $6,000 payable on August 7, 2001 who
is  offered an Early  Payment on  November  1, 1998 would be offered  $4,321;  a
Claimant with a $6,000 claim payable on August 7, 2002 and offered Early Payment
on November 1, 1998 would be offered $3,834.

         (c) The amount of the discount of the Early  Payment will be calculated
from the first day of June of the year in which the Damage Award otherwise would
be payable under the 

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                                              1211 S.W. Fifth Avenue, Suite 1500
                                                   Portland, Oregon  97204
                                                       (503) 727-2000


Settlement Agreement to the first day of the month in which the offer is made --
provided that such offers are mailed to Class Members no later than the 15th day
of such month.

5.       OFFERS OF EARLY PAYMENT TO BE PROMPTLY MADE 

         L-P's offers of Early Payment to Claimants who otherwise  would be paid
from the proceeds of the  Remaining  $80 Million and the $100  million  Optional
Contributions  will be communicated by the Claims  Administrator to the relevant
Claimants as soon as  practicable  following the execution of this  Supplemental
Agreement.

6.       TRANSMITTAL TO RECIPIENTS OF OFFER OF EARLY PAYMENT 

         (a) The Claims  Administrator  shall transmit an offer of Early Payment
to each  Claimant  entitled  to receive one under  paragraph 3 or 4, above.  The
transmittal  will  explain the proposal and include a check in the amount of the
Early Payment. In addition, the transmittal will advise each Claimant that he is
under no  obligation to accept the payment and that the Early Payment is offered
in complete  satisfaction of the Claimant's  Damage Award and the claim on which
it is based.  

         (b) Each  Claimant  will  have  sixty  (60)  days  from the date of the
transmittal to cash the check,  unless the period is extended by L-P in its sole
discretion.  If the Claimant  fails to cash the check within such sixty (60) day
period (or if extended by L-P, such extended period),  he will be deemed to have
rejected the offer. 

         (c) A Claimant's  failure to cash the check shall not affect his rights
and  obligations  under the  Settlement  Agreement,  all of which remain in full
force and effect.  

7.       CREDIT FOR EARLY  PAYMENT 

         To  take  into  account  their  early  payment,  all  payments  made to
Claimants  pursuant to paragraphs 3 and 4, above, will be credited against L-P's
mandatory and optional payment obligations under paragraphs 4.3, 4.7, and 4.8 of
the Settlement Agreement. The credit shall be equal to the aggregate face amount
of the claims to which such payments relate. For example,  if Claimants who hold
$25  million  of claims  that  otherwise  would be paid from the next  mandatory


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                                              1211 S.W. Fifth Avenue, Suite 1500
                                                   Portland, Oregon  97204
                                                       (503) 727-2000


contribution  due June 7, 1999 accept the offer of early payment,  the mandatory
contribution  due on that date will be $5 million.  Similarly,  if Claimants who
hold $35 million of claims that otherwise would be paid from the proceeds of the
first optional $50 million  contribution accept the offer of early payment,  the
optional  payment due in 2001 will be $15 million.  

8.       CREATION OF $125 MILLION SECOND  SETTLEMENT  FUND 

         L-P will create a separate account within the existing  Settlement Fund
(the "Second Settlement Fund"),  which will be capitalized at $125 million.  The
cash funding for the Second  Settlement  Fund will be provided no later than ten
(10) business days  following the  expiration of the Right of Withdrawal  Period
(Paragraph  17,  below)  with the right not having  been  exercised.  The Second
Settlement Fund will be open to receive claims as soon as practicable  following
the execution of this Supplemental Agreement and will remain open until December
31, 1999. The Second  Settlement  Fund is created as a source of payment for all
approved claims filed prior to December 31, 1999 that are in excess of the first
$375 million of claims.  

9.       ELIGIBLE  CLAIMS  

         Claims  that may be filed with the Second  Settlement  Fund  ("Eligible
Claims")  are: (a) claims for  subsequent  damage or for the benefit of the "65%
Rule;" (b) claims that  previously  have been  approved but remain unpaid (other
than a claim that is the subject of an offer of Early Payment); and (c) approved
claims filed prior to the close of the Second  Settlement  Fund. 

10.      ELECTION TO PARTICIPATE  

         The Claims  Administrator  will notify in writing each Claimant who has
filed an Eligible Claim of L-P's offer to establish the Second  Settlement  Fund
and describe its terms.  Each such  Claimant  will have sixty (60) days from the
date of the  notice  to  return  to the  Claims  Administrator  an  Election  to
Participate  form evidencing his desire to participate in the Second  Settlement
Fund.  Only Claimants who timely return the Election to Participate  form to the
Claims  Administrator  will be allowed to participate  in the Second  Settlement
Fund.

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                                              1211 S.W. Fifth Avenue, Suite 1500
                                                   Portland, Oregon  97204
                                                       (503) 727-2000


11.      PROMPT INSPECTION; CALCULATION OF DAMAGE AWARD
         
         The claim of each Claimant that is approved by the Claims Administrator
will be promptly  inspected by the  Independent  Adjuster in accordance with the
protocol  adopted  under  the  Settlement  Agreement.   Thereafter,  the  Claims
Administrator will calculate the applicable damage award, if any, based upon the
results of the inspection of the Independent  Adjuster (the "Damage Award"). 

12.      CALCULATION OF PRO RATA SHARE 

         As soon as  practicable  following  the close of the Second  Settlement
Fund,  the  Claims  Administrator  will  calculate  the pro  rata  share of each
Claimant  who has filed an  Eligible  Claim and who timely  files an Election to
Participate form in accordance with the formula S = D($125  million/A),  where S
is the Claimant's pro rata share of the Second  Settlement Fund; D is the amount
of the  Claimant's  Damage Award,  and A is the  aggregate  amount of all claims
filed against the Second  Settlement Fund (the "Pro Rata Share").  

13.      ADVICE TO PARTICIPANTS  IN  SECOND  SETTLEMENT  FUND 

         As  soon  as the Pro  Rata  Share  of the  participants  in the  Second
Settlement  Fund  has  been  calculated  by  the  Claims   Administrator,   each
participant will be advised in writing: (a) of the amount of his damage as shown
in the  Calculation  Worksheet;  (b) of the  amount of his Pro Rata Share of the
Second Settlement Fund (not to exceed the amount of his Damage Award);  (c) that
the Pro Rata Share is offered to him in complete  satisfaction  of his claim for
damage  as  described  in the  Calculation  Worksheet;  (d) that  recipients  of
distributions  from the Second  Settlement Fund may not file  additional  damage
claims  with  the  Claims   Administrator  during  the  remaining  term  of  the
Settlement;  and (e) that there is no right to  arbitrate  the amount of the pro
rata  distribution.  

14.      BACK END OPT-OUT RIGHT 

         If the Claimant is dissatisfied  with the amount of his Pro Rata Share,
he may  reject  it by  providing  written  notice  to the  Claims  Administrator
postmarked  no later  than  thirty  (30)  days  from  the  date of such  written
notification (the "Back End Opt-Out Right").  Unless the Claimant

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                                              1211 S.W. Fifth Avenue, Suite 1500
                                                   Portland, Oregon  97204
                                                       (503) 727-2000


exercises his Back End Opt-Out Right by providing  timely  written notice to the
Claims  Administrator,  he conclusively  will be deemed to have accepted his Pro
Rata Share in full and complete  satisfaction  of the damage claim  described in
the Calculation Worksheet.

15.      PAYMENT OF PRO RATA SHARE  

         Payment  of the Pro  Rata  Share  of  each  participant  in the  Second
Settlement  Fund who fails timely to exercise his Back End Opt-Out Right will be
mailed to him as soon as  practicable  following the  expiration of the Right of
Withdrawal  Period  (Paragraph  17,  below)  with  the  right  not  having  been
exercised.  

16.      WRITTEN NOTICE TO L-P 

         The Claims  Administrator  will provide L-P with prompt  written notice
(no less often than  biweekly) of the number of Claimants  with Eligible  Claims
who have exercised  their Opt-In Rights,  of the number who have not, and of the
aggregate  amount of their  claims.  In addition,  within ten (10) business days
after the expiration of the period for the exercise of Back End Opt-Out  Rights,
the Claims  Administrator  will advise L-P in writing of the number of Claimants
who timely  exercised their Back End Opt-Out Rights and of the aggregate  amount
of their claims.  

17.      L-P'S RIGHT OF WITHDRAWAL 

         If, in its sole  discretion,  L-P believes that the number of Claimants
who elect not to  participate  in the Second  Settlement  Fund  (whether  by not
opting-in or by opting out) is excessive, it may withdraw its offer to establish
the Second Settlement fund (the "Right of Withdrawal").  The Right of Withdrawal
must be  exercised  by  providing  written  notice to the  Claims  Administrator
postmarked  within ten (10) business days  following  receipt of advice from the
Claims  Administrator  as to the number of Claimants  exercising  their Back End
Opt-Out Rights (the "Right of Withdrawal  Period").  If L-P timely exercises its
Right of Withdrawal,  its offer to establish the Second  Settlement Fund is null
and void, and thereafter the rights and obligations of L-P and all Class Members
shall be governed exclusively by the terms of the 

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                                              1211 S.W. Fifth Avenue, Suite 1500
                                                   Portland, Oregon  97204
                                                       (503) 727-2000


Settlement  Agreement,  except to the extent those rights and  obligations  were
modified pursuant to a claimant's acceptance of any offer of Early Payment.

18.      REVIVAL OF CLAIMS; MAINTENANCE INSTRUCTIONS 

         All  Claimants  also will be advised that  pursuant to the terms of the
Settlement  Agreement  if there are unpaid  claims at the end of the  settlement
term, L-P must pay them;  or, if it does not, each unpaid  Claimant will be free
after that date to pursue whatever legal remedies are available,  subject to any
legal  defenses L-P may have,  including  the defense that a Claimant has failed
properly to maintain his siding. In this regard,  each Claimant will be provided
with a copy of L-P's written maintenance instructions,  which would be the basis
for any maintenance defense if not followed.

19.      PERSONAL AND PUBLISHED NOTICE 

         The  substance  of this  Supplemental  Agreement  will be  communicated
personally in a direct  mailing to each Claimant who files an Eligible  Claim or
who is entitled to receive an offer of Early Payment. In addition, notice of the
offer may be included in the  published  third year notice that must be provided
under the Settlement  Agreement and in such other publications and in such other
manner as the Parties jointly may agree.

20.      TAX STATUS OF SECOND SETTLEMENT FUND 

         The Second  Settlement  Fund will be  established  and  maintained as a
separate  account  within the existing  Qualified  Settlement  Fund  ("QSF") in
accordance  with Section 468B of the Internal  Revenue Code of 1986, as amended,
and  the  regulations  promulgated  thereunder.   The  Claims  Administrator  is
appointed to act as administrator of the fund within the meaning of Treas.  Reg.
Sec. 1-468B-2(k)(3). As the Administrator, the Claims Administrator shall comply
with all applicable  duties and obligations under IRC sec. 468B and any relevant
implementing regulations.

21.      REPRESENTATIONS AND WARRANTIES 

         L-P represents  and warrants  that: (a) it has all requisite  corporate
power and  authority  to execute,  deliver,  and perform this  agreement  and to
consummate the transactions  contemplated  

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                                              1211 S.W. Fifth Avenue, Suite 1500
                                                   Portland, Oregon  97204
                                                       (503) 727-2000


hereby;  (b) the  execution,  delivery,  and  performance  of this  Supplemental
Agreement have been duly authorized by all necessary corporation action; and (c)
this  agreement  has been  validly  executed by L-P and  constitutes  its legal,
valid, and binding obligation.

22. INTEREST ON EARLY  PAYMENT  FUNDING AND SECOND  SETTLEMENT  FUND 

         All  interest  earned  on the funds  advanced  by L-P to fund the Early
Payment offers and all interest  earned on the funds advanced by L-P to fund the
Second  Settlement  Fund shall be applied as a full credit  toward any remaining
mandatory or optional contributions from L-P under the Settlement Agreement.

23. MISCELLANEOUS  PROVISIONS

         a. No term or provision of this  Supplemental  Agreement shall alter or
amend any term or  provision  of the  Settlement  Agreement,  no  hearing on the
Supplemental  Agreement  is required  under Rule 23, Fed. R. Civ. P., and all of
terms and provisions of the Settlement Agreement remain in full force and effect
to the same  extent  as  though  this  Supplemental  Agreement  had  never  been
executed.

         b. The Court,  acting  through the Special  Master,  shall  oversee the
implementation,  administration,  and performance of this Supplemental Agreement
to  assure  that  none of its  provisions  alter  or  affect  the  terms  of the
Settlement Agreement. The Special Master also shall resolve any dispute that may
arise under this Supplemental  Agreement which bears on any term or condition of
the  Settlement  Agreement  or  involves  the  construction  or  meaning  of any
provision of the Settlement Agreement. 

         c. This Supplemental Agreement may not be modified or amended except in
a writing signed by all the Parties.

         d. This  Supplemental  Agreement  shall be governed  and  construed  in
accordance  with the laws of the State of Oregon,  applied without regard to its
laws applicable to choice of law.

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                                              1211 S.W. Fifth Avenue, Suite 1500
                                                   Portland, Oregon  97204
                                                       (503) 727-2000


         e. The  headings of the  sections of this  Supplemental  Agreement  are
included for convenience only and shall not be deemed to constitute part of this
agreement or to affect its construction.

         f.  This  Supplemental  Agreement  may be  executed  in any  number  of
counterparts, all of which when taken together shall constitute one agreement.

         g.  Any  additional   administrative   costs  incurred  by  the  Claims
Administrator   or  Independent   Adjuster  in  the   performance  of  the  acts
contemplated by this  Supplemental  Agreement,  as well as the cost of providing
published notice of its terms, shall be borne by L-P.

         h. Any notice provided in connection with this  Supplemental  Agreement
or other  document  to be provided by one Party to the other shall be in writing
and  delivered  personally  or sent by  registered  or certified  mail,  postage
prepaid: if to L-P, to the attention of L-P's respective representatives; and to
Plaintiffs' Class Counsel on behalf of Settlement Class members.  As of the date
of this Supplemental Agreement, the respective  representatives are as set forth
below.

         Dated and effective as of October 26, 1998.

                             LOUISIANA-PACIFIC CORPORATION



                             By:/s/ Gary C.  Wilkerson  
                                ------------------------------------------------
                                Gary C. Wilkerson
                                Vice President and General Counsel
                                LOUISIANA-PACIFIC CORPORATION
                                111 S.W. Fifth Avenue, Suite 4200
                                Portland, OR 97204



                             By:/s/ Michael H. Simon
                                ------------------------------------------------
                                Michael H. Simon
                                PERKINS COIE LLP
                                1211 S. W. Fifth Avenue, Suite 1500
                                Portland, Oregon 97204

                                Counsel for Louisiana-Pacific Corp.

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                                              1211 S.W. Fifth Avenue, Suite 1500
                                                   Portland, Oregon  97204
                                                       (503) 727-2000




                             CLASS COUNSEL



                             By:/s/  Christopher I. Brain  
                                ------------------------------------------------
                                Christopher I. Brain
                                TOUSLEY BRAIN 700
                                Fifth Avenue, 56th Floor
                                AT&T Gateway Tower
                                Seattle, WA 98104-5056



                             By:/s/ Clyde  Platt
                                ------------------------------------------------
                                Steve W. Berman
                                Clyde Platt
                                HAGENS & BERMAN
                                1301 Fifth Avenue, Suite 2929
                                Seattle, WA 98101



                             By:/s/ Jeremy R. Larson
                                ------------------------------------------------
                                Charles Nomellini
                                Jaremy R. Larson
                                FOSTER PEPPER & SHEFELMAN
                                1111 Third Avenue, Suite 3400
                                Seattle, WA 98101



                             By:/s/ Jonathan D. Selbin
                                ------------------------------------------------
                                Elizabeth Cabraser
                                Jonathan D. Selbin 
                                LIEFF, CABRASER, HEIMANN
                                & BERNSTEIN LLP
                                Embarcadero Center West
                                275 Battery Street, 30th Floor
                                San Francisco, CA 94111-3339


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                                              1211 S.W. Fifth Avenue, Suite 1500
                                                   Portland, Oregon  97204
                                                       (503) 727-2000




                             By:/s/ A. Hoyt Rowell, III
                                ------------------------------------------------
                                A. Hoyt Rowell, III
                                NESS, MOTLEY, LOADBOLT,
                                RICHARDSON & POOLE
                                174 East Bay Street, Suite 100
                                Charleston, S.C. 29041



                             By:/s/ William H. Garvin, III
                                ------------------------------------------------
                                William H. Garvin, III
                                WELLER, GREEN, McGOWN & TOUPS
                                2937 Kerry Forrest Parkway, Suite A-2
                                Tallahassee, FL 32308

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                                              1211 S.W. Fifth Avenue, Suite 1500
                                                   Portland, Oregon  97204
                                                       (503) 727-2000