SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 11-K

                     ANNUAL REPORT PURSUANT TO SECTION 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                   For the Fiscal Year ended December 30, 1999

                                  OWENS CORNING
                            SAVINGS AND SECURITY PLAN

                                  OWENS CORNING
                            One Owens Corning Parkway
                               Toledo, Ohio 43659

                           Commission File No. 1-3660

  ---------------------------------------------------------------------------
                              REQUIRED INFORMATION

(a)   Financial Statements.

      1.    Report of Independent Public Accountants

      2.    Statements of Assets Available for Benefits - as of
               December 30, 1999 and December 30, 1998

      3.    Statements of Changes in Assets Available for Benefits -
               for the years ended December 30, 1999 and December 30, 1998

      4.    Notes to Financial Statements

(b)   Exhibit.

      Consent of Arthur Andersen LLP

In accordance  with the  instructions  to this Form 11-K,  "plans subject to the
Employee  Retirement  Income  Security  Act of  1974  ("ERISA")  may  file  plan
financial  statements  and schedules  prepared in accordance  with the financial
reporting  requirements  of  ERISA."  As the  Plan  is  subject  to  the  filing
requirements of ERISA, the aforementioned  financial statements and schedules of
the Plan have been prepared in accordance with such requirements.


                                   SIGNATURES


Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
trustees (or other persons who administer the Plan) have duly caused this annual
report to be signed on its behalf by the undersigned hereunto duly authorized.

                                   OWENS CORNING
                                   SAVINGS AND SECURITY PLAN


                                   By     /s/  Steven J. Strobel
                                      -------------------------------------
                                      Steven J. Strobel
                                      Chairman, Investment Review Committee



Dated:

June 27, 2000



                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS



To the Plan Administrator
of the Owens Corning
Savings and Security Plan:

We have audited the accompanying  statements of assets available for benefits of
the OWENS  CORNING  SAVINGS AND SECURITY  PLAN as of December 30, 1999 and 1998,
and the related  statements of changes in assets  available for benefits for the
years then ended.  These  financial  statements  are the  responsibility  of the
Plan's  management.  Our  responsibility  is to  express  an  opinion  on  these
financial statements based on our audits.

We conducted our audits in accordance  with  auditing  standards  generally
accepted in the United States.  Those standards require that we plan and perform
the audit to obtain reasonable  assurance about whether the financial statements
are free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements.  An
audit also includes  assessing the accounting  principles  used and  significant
estimates  made by the Plan's  management,  as well as  evaluating  the  overall
financial  statement  presentation.   We  believe  that  our  audits  provide  a
reasonable basis for our opinion.

In our opinion,  the financial  statements  referred to above present fairly, in
all material  respects,  the assets  available for benefits of the Owens Corning
Savings and Security  Plan as of December 30, 1999 and 1998,  and the changes in
its assets  available for benefits for the years then ended in  conformity  with
accounting principles generally accepted in the United States.


                                            /s/  Arthur Andersen LLP
                                            ---------------------------------
                                            ARTHUR ANDERSEN LLP

Toledo, Ohio,

April 28, 2000




                                      - 1 -

                                  OWENS CORNING
                            SAVINGS AND SECURITY PLAN

                   STATEMENTS OF ASSETS AVAILABLE FOR BENEFITS

                  AS OF DECEMBER 30, 1999 AND DECEMBER 30, 1998

           
                                                                                                               


                                                                                     December 30, 1999         December 30, 1998
                                                                                     -----------------         -----------------
ASSETS:
 Investment in master trust (Notes 1, 2, 3 and 7)                                    $    99,494,444           $     78,771,700
 Due from Owens Corning (Note 1)                                                           2,582,980                    483,583
                                                                                     ---------------           ----------------

      ASSETS AVAILABLE FOR BENEFITS                                                  $   102,077,424           $     79,255,283
                                                                                     ===============           ================





        The accompanying notes are an integral part of these statements.





                                      - 2 -

                                  OWENS CORNING
                            SAVINGS AND SECURITY PLAN

             STATEMENTS OF CHANGES IN ASSETS AVAILABLE FOR BENEFITS

           FOR THE YEARS ENDED DECEMBER 30, 1999 AND DECEMBER 30, 1998


                                                                                                                 
                                                                                   December 30, 1999             December 30, 1998
                                                                                   -----------------             -----------------
INVESTMENT INCOME (Note 2):
  Net interest in master trust investment
    (loss) income                                                                  $      (6,141,997)             $      5,154,927

CONTRIBUTIONS (Notes 1, 5 and 7):
  Participants                                                                            14,734,157                    11,604,692
  Owens Corning                                                                            8,786,634                     5,014,365
                                                                                      --------------              ----------------
                                                                                          23,520,791                    16,619,057
                                                                                      --------------              ----------------
OTHER:
  Distributions to participants (Note 5)                                                 (14,362,075)                  (10,194,396)
  Transfer from Predecessor Trustee (Note 6)                                              20,154,605                     1,766,889
  Administrative expenses (Note 1)                                                          (349,987)                     (285,442)
  Other                                                                                          804                     1,248,105
                                                                                      --------------              ----------------
                                                                                           5,443,347                    (7,464,844)
                                                                                      --------------              ----------------

    Net increase (Note 3)                                                                 22,822,141                    14,309,140
                                                                                      --------------              ----------------

ASSETS AVAILABLE FOR BENEFITS - beginning of year                                         79,255,283                    64,946,143
                                                                                      --------------              ----------------

ASSETS AVAILABLE FOR BENEFITS - end of year                                        $     102,077,424              $     79,255,283
                                                                                      ==============              ================




        The accompanying notes are an integral part of these statements.




                                      - 3 -

                                  OWENS CORNING
                            SAVINGS AND SECURITY PLAN

                          NOTES TO FINANCIAL STATEMENTS


(1) SUMMARY OF SIGNIFICANT PROVISIONS OF THE PLAN AND ACCOUNTING POLICIES

Operations of the Plan
- ----------------------

The Owens  Corning  Savings and Security  Plan (the Plan)  principally  benefits
designated  groups of employees of Owens Corning and certain  subsidiaries  (the
Company). An eligible employee may elect to enroll in the Plan at any time.

Administrative  expenses  of the Plan are  charged to the Plan and  include
professional fees, accounting and other administrative expenses.

Certain  Plan  investments,  included in a master  trust (Note 2), are shares of
mutual  funds  managed by  Fidelity  Investments  and  Company  Stock.  Fidelity
Investments  is the trustee (the Trustee) as defined by the Plan and the Company
is the plan sponsor.  Therefore, these transactions qualify as party-in-interest
transactions.

The  following  descriptions  of the  Plan  provide  only  general  information.
Participants should refer to the Plan agreement for a more complete  description
of the Plan's provisions.

Plan Contributions
- ------------------

Participants  may  contribute up to 15% of their base pay to the Plan.  All or a
portion  of  the   participants'   contributions   may  be   designated  at  the
participants' option as deferred income which, pursuant to Section 401(k) of the
Internal  Revenue Code, is not subject to Federal  income tax until such amounts
are distributed to the participants. The Plan requires remittance of participant
contributions  to the  Trustee  as  soon  as  deducted  from  the  participants'
paychecks.

The Plan provides a retirement  contribution equal to a specified  percentage of
eligible pay (which  percentage  varies by employee group) for  participants who
work at a plant or business  unit where a defined  benefit  pension  plan is not
available.  Company  contributions  relating to the retirement  contribution are
invested as participants direct among the Plan's investment options.

The Company matches  participant  contributions at various negotiated rates. The
Company may, at its  discretion,  make an annual profit sharing  contribution to
the Plan.  The  Company  made a profit  sharing  contribution  of  approximately
$2,583,000  and  $484,000 in 1999 and 1998,  respectively,  included as Due from
Owens  Corning  in  the  accompanying  financial  statements.  One-half  of  the
Company's   annual  profit  sharing   contribution  and  100%  of  the  matching
contributions are invested  exclusively in Company stock, held by a master trust
(Note 2).

The Company may, at its option,  make Company  contributions in the form of cash
or an  equivalent  number of shares of common stock of the Company.  The Company
contributed  cash in 1999 and shares of stock in 1998 to satisfy  the portion of
the annual profit sharing  contribution  invested  exclusively in Company stock,
held by a master trust (Note 2).



                                      - 4 -

                                  OWENS CORNING
                            SAVINGS AND SECURITY PLAN

                          NOTES TO FINANCIAL STATEMENTS
                                   (continued)

(1) SUMMARY OF SIGNIFICANT PROVISIONS OF THE PLAN AND ACCOUNTING POLICIES
    (continued)

Plan Investment Options
- -----------------------

Participants elect to have their  contributions  invested in 1% increments among
the investment funds made available under the Plan, which are collectively  held
in a master trust (Note 2). In 1999,  the Acorn Fund and the  Templeton  Foreign
Fund were  eliminated as investment  options.  In 1998, the Dodge & Cox Balanced
Fund was eliminated as an investment option in the Plan and the Low-Priced Stock
Fund was added. Currently, the following ten investment options are available to
participants:

     Company Stock Fund
     ------------------

     Consists primarily of investments in Owens Corning common stock.

     Spartan U.S. Equity Index Fund
     ------------------------------

     Primarily  invested in the companies whose securities are the basis for the
     value of the Standard & Poor's 500 Index.

     Retirement Money Market Fund
     -----------------------------

     Primarily invests in high-quality  short-term U.S. dollar denominated money
     market  securities  of domestic and foreign  issuers.  Investments  include
     short-term   corporate   obligations,   U.S.  government   obligations  and
     certificates of deposit.

     Low-Priced Stock Fund
     ---------------------

     Primarily invests in stocks of smaller,  less well-known companies that are
     considered undervalued or out of favor with other
     investors.



                                      - 5 -

                                  OWENS CORNING
                            SAVINGS AND SECURITY PLAN

                          NOTES TO FINANCIAL STATEMENTS
                                   (continued)

(1) SUMMARY OF SIGNIFICANT PROVISIONS OF THE PLAN AND ACCOUNTING POLICIES
    (continued)

     Puritan Fund
     ------------

     Primarily invests in high-yielding U.S. and foreign securities,  common and
     preferred stocks, and bonds of any quality or maturity.

     Growth and Income Portfolio
     ---------------------------

     Primarily invests in U.S. and foreign stocks.

     Blue Chip Growth Fund
     ---------------------

     Primarily invests in common stocks of well-known and established  companies
     and companies with strong earnings and future growth potential.

     Aggressive Growth Fund
     ----------------------

     Primarily  invests  in stocks of small and  medium-sized  companies  in the
     developing  stages  of  their  life  cycle  that  have  the  potential  for
     accelerated earnings or revenue growth.

     Diversified International Fund
     ------------------------------

     Primarily  invests in stocks of companies located outside the U.S. that are
     included in the Morgan Stanley EAFE Index.

     Investment Grade Bond Fund
     --------------------------

     Invests in a broad variety of fixed-income obligations of any maturity that
     are primarily rated medium to high quality.

     The Trustee,  at its sole discretion subject to the provisions in the trust
     agreement,  may hold any  portion  of any  contributions  in cash  which it
     considers necessary to meet anticipated disbursements.




                                      - 6 -

                                 OWENS CORNING
                            SAVINGS AND SECURITY PLAN

                          NOTES TO FINANCIAL STATEMENTS
                                   (continued)

(1) SUMMARY OF SIGNIFICANT PROVISIONS OF THE PLAN AND ACCOUNTING POLICIES
    (continued)

Participants  may change their  investment  options and  contribution  rate on a
daily basis and  redistribute  their account  balances daily.  Participants  may
discontinue their contributions to the Plan at any time.

Basis of Accounting
- -------------------

The accompanying  financial  statements have been prepared on the accrual basis.
Investments are reported at quoted market value. Participant withdrawal requests
received by the plan  administrator  before year end but not yet  distributed to
the participants at year end are included in assets available for benefits.

Use of Estimates
- ----------------

The preparation of financial  statements in conformity  with generally  accepted
accounting principles requires management to make estimates and assumptions that
affect  the  reported  amounts  of assets  and  liabilities  and  disclosure  of
contingent  assets and  liabilities at the date of the financial  statements and
the reported amounts of income and expenses during the reporting period.  Future
events could alter such estimates.

Reclassifications
- -----------------

Certain  amounts in the 1998  financial  statements  have been  reclassified  to
conform with the 1999 presentation.

Income Taxes
- ------------

The Internal Revenue Service (IRS) has issued a determination letter dated March
27, 1996,  stating that the Plan meets the requirements of Section 401(a) of the
Internal  Revenue  Code (the  Code) and that the trust is exempt  from  taxation
under  Section  501(a) of the Code.  Participants  generally  are not subject to
Federal income tax on Company contributions or fund earnings until those amounts
are distributed to them. Participants may elect to designate all or a portion of
their contributions to the Plan as deferred income pursuant to Section 401(k) of
the Code. This election  permits the  participants to exclude from gross taxable
income  for  Federal  tax  purposes  that  portion  of  their  contributions  so
designated,  subject  to  certain  limitations,  until  such  time as  they  are
withdrawn from the Plan.  The Plan had several  amendments  throughout  1999 and
1998;  however,  no new tax  determination  letter has been  issued.  Management
believes  that the  amendments  do not change the Plan's  status for meeting the
requirements  of Section 401(a) of the Internal  Revenue Code and that the trust
is still exempt from taxation.




                                      - 7 -

                                  OWENS CORNING
                            SAVINGS AND SECURITY PLAN

                          NOTES TO FINANCIAL STATEMENTS
                                   (continued)

(1) SUMMARY OF SIGNIFICANT PROVISIONS OF THE PLAN AND ACCOUNTING POLICIES
    (continued)

Proceedings in the Event of Plan Termination
- --------------------------------------------

Although it has not  expressed any intent to do so, the Company has the right to
terminate  the  Plan.  In  the  event  of   termination   or  upon  a  permanent
discontinuance of Company  contributions,  the Plan accounts of each participant
not previously vested would fully vest.  Participants  would, in accordance with
the  terms  of the  Plan,  receive  their  contributions  to the Plan as well as
Company  contributions  to the Plan on their  behalf and the  earnings  on those
contributions.

(2) INVESTMENTS

The Owens Corning  Savings Plans Master Trust (the Master Trust) was established
for the  investment  of the assets of the Plan and another  savings  plan of the
Company.  Each participating plan has an undivided interest in the Master Trust,
which is based on beginning  of year plan  interest  adjusted  for  transactions
attributable  to each  plan and a  proportionate  share of income  and  expenses
attributable  to the Master Trust as a whole.  Quoted  market prices are used to
value investments in the Master Trust. A summary of the net assets of the Master
Trust as of December 30, 1999 and 1998 is as follows:


                                                                                                   
                                                                                 1999                    1998
                                                                                 ----                    ----
ASSETS:
Investments:
    Common Stock*                                                           $ 116,012,854           $154,873,515
    Mutual Funds                                                              358,124,204            244,617,866
    Loans to Participants (Note 4)                                             12,923,914             11,665,663
                                                                            -------------           ------------
Total Assets                                                                $ 487,060,972           $411,157,044

PLAN INTEREST                                                                        .204                   .192
                                                                            =============           ============

*Nonparticipant-directed






                                      - 8 -

                                  OWENS CORNING
                            SAVINGS AND SECURITY PLAN

                          NOTES TO FINANCIAL STATEMENTS
                                   (continued)

(2) INVESTMENTS (continued)

A summary of investment income for the Master Trust for the years ended December
30, 1999 and 1998, is as follows:


                                                                                                        
                                                                                1999                         1998
                                                                                ----                         ----
Investment (Loss) Income:
  Net (depreciation) appreciation in
    fair value of investments:
      Common Stock                                                         $   (68,861,570)           $     8,843,733
      Mutual Funds                                                              43,711,008                 10,859,683
                                                                           ---------------            ---------------
                                                                               (25,150,562)                19,703,416

      Interest                                                                     876,577                    350,651
      Dividends                                                                 20,235,160                 15,205,828
                                                                           ---------------            ---------------
    Total investment (loss) income                                         $    (4,038,825)           $    35,259,895
                                                                           ===============            ===============


Unrealized appreciation  (depreciation) of investments is reflected currently as
a change in assets  available for benefits.  Purchases and sales are recorded on
the trade date basis.  Realized gain or loss on  disposition  of  investments is
computed using average cost.

(3)  NONPARTICIPANT-DIRECTED INVESTMENTS

Information about the significant components of the assets and changes in assets
available for benefits relating to the nonparticipant-directed investment option
within the Master Trust (the Company Stock Fund) is as follows:




                                      - 9 -

                                  OWENS CORNING

                            SAVINGS AND SECURITY PLAN

                          NOTES TO FINANCIAL STATEMENTS
                                   (continued)

(3)  NONPARTICIPANT-DIRECTED INVESTMENTS (continued)


                                                                                                   
                                                                            1999                         1998
                                                                            ----                         ----
Assets Available for Benefits:
  Plan interest in Company Stock Fund                                    $ 29,299,463               $ 34,794,790
  Contribution receivable                                                   1,339,121                     48,496
                                                                         ------------               ------------
                                                                         $ 30,638,584               $ 34,843,286
                                                                         ============               ============
Changes in Total Assets Available for Benefits:
  Plan interest in:
    Interest                                                             $    (26,059)              $    (23,843)
    Dividends                                                                 323,163                    294,348
    Net (depreciation) appreciation                                       (16,125,355)                 1,332,063
                                                                         -------------              ------------
                                                                          (15,828,251)                 1,602,568

  Contributions                                                             9,374,772                  8,161,101
  Transfers from (to) participant -
    directed investments                                                    5,844,154                 (3,360,108)
  Distributions and other                                                  (3,595,377)                (4,670,086)
                                                                         -------------              ------------

                                                                         $ (4,204,702)              $  1,733,475
                                                                         =============              ============


(4) LOANS

Loan balances largely represent rollovers from acquisitions made by the Company.
No new loans were made to active  participants  during  January 1, 1998  through
August  31,  1998,  as there was no  provision  in the Plan to do so.  Effective
September 1, 1998,  non-union  employees and union employees at the Hebron, Ohio
location may obtain loans from the Plan.  Other union employees may obtain loans
from the Plan following the first re-negotiation of their applicable  collective
bargaining agreement after September 1, 1998.

The maximum  amount  participants  may borrow is the lesser of $50,000 or 50% of
their  total  vested  account  balance,  limited  to the total of  contributions
designated as deferrals and related earnings. The minimum amount available for a
loan  is  $1,000.  The  loan  limit  is  reduced  by the  highest  loan  balance
outstanding in the prior 12 months.




                                     - 10 -

                                  OWENS CORNING
                            SAVINGS AND SECURITY PLAN

                          NOTES TO FINANCIAL STATEMENTS
                                   (continued)

(4) LOANS (continued)

Loans advanced are repaid through regular payroll deductions with interest equal
to the prime rate in effect on the last  business  day of the month prior to the
employee's loan application.

A loan can be requested for any reason. A borrower has from one to five years to
repay the loan.  Repayments of principal and interest are invested in one of the
ten investment funds in accordance with the borrower's election.

(5) VESTING, FORFEITURES AND DISTRIBUTIONS

Participants  become 100% vested in Company  contributions  and earnings thereon
after  five  years  of  completed  service  at a rate of 20% per  year.  Certain
participants become 100% vested after three years of service.  Such amounts also
become  fully  vested upon the  participant  attaining 65 years of age with five
years of service,  55 years of age with 10 years of service,  termination of the
participant's  employment  due to retirement,  disability or death,  involuntary
termination of the participant's employment (other than for cause),  termination
of the Plan, or permanent discontinuance of the prescribed Company contributions
to the Plan. Such vested  contributions  and earnings thereon are  automatically
distributable  after  termination  and upon  attaining 65 years of age or death,
whichever is earlier.  If termination of employment  occurs for any reason other
than attaining 65 years of age or death, the  participant's  account will become
distributable  at 65 years of age or death  unless  an  election  for  immediate
distribution is filed within 90 days of termination with the plan administrator.

Participants may make certain withdrawals from their accounts.  Participants may
elect to receive their  distribution  from the Company Stock Fund in the form of
cash or Company  stock.  After-tax  contributions  and the related  earnings are
eligible for withdrawal up to two times each calendar year, once between January
1 and June 30 of the year, and again between July 1 and December 31 of the year.
Participants  over age 65 may make withdrawals of Company  contributions  during
the same periods.  No other  withdrawals  of Company  contributions  can be made
during employment.  Participants who voluntarily terminate or are terminated for
cause will  forfeit  the  non-vested  portion of the Company  contributions  and
related  earnings  which  are  applicable.  Forfeitures  are  applied  to reduce
subsequent  Company  contributions  to the Plan.  The market value  forfeited by
employees  withdrawing  from the Plan was  approximately  $35,000  in 1999,  and
$50,000 in 1998.

Participants  aged  59-1/2,  or older,  may  withdraw  all or a portion of their
before-tax contributions and earnings.  Otherwise,  before-tax contributions may
be withdrawn only under serious  financial  hardship.  Earnings  credited to the
before-tax contributions before 1989, if any, are not available for withdrawal.



                                     - 11 -

                                  OWENS CORNING
                            SAVINGS AND SECURITY PLAN

                          NOTES TO FINANCIAL STATEMENTS
                                   (continued)

(5) VESTING, FORFEITURES AND DISTRIBUTIONS (continued)

Included in 1999  distributions  to participants in the  accompanying  financial
statements is  approximately  $2,500,000 of transfers to a salaried savings plan
maintained by the Company.

(6) PLAN MERGERS

Effective  January 1, 1999,  the following  subsidiaries'  plans merged into the
Plan:  AmeriMark  Building  Products,  Inc. Hourly  Employees  Retirement  Plan;
Employees' Savings Plan for AmeriMark Building Products,  Inc. and Subsidiaries;
Fabwel,  Inc.  401(k)  Plan;  Falcon Foam  Corporation  Retirement  Savings Plan
(Falcon of California  only) and the Fibreboard  Corporation  401(k)  Retirement
Plan.  Employees  were 100%  vested in the amounts  transferred  under the prior
plans.   During  1999,  in  connection  with  these  mergers,   assets  totaling
approximately $20,000,000 were transferred into the Plan.

In 1998, three subsidiary plans merged into the Plan. Effective January 1, 1998,
the Partek  Insulations,  Inc. 401(k) Plan merged into the Plan. The OCFL 401(k)
Savings Plan (Hebron  location) and the OCFL Money Purchase  Pension Plan merged
into the Plan  effective  July 1,  1998.  On each of the  effective  dates,  all
amounts were  transferred  to the Plan and each  employee was 100% vested in the
amounts under the prior plan.

Effective  September  30,  1998,  the Plan was  revised in  connection  with the
transfer of Owens Corning's  business of  manufacturing  and selling glass fiber
yarns and specialty  materials to Advanced  Glassfiber Yarns LLC ("AGY").  Those
eligible,  salaried  employees in the Plan as of September  30, 1998,  that were
transferred to AGY are fully vested in their  accounts under the Plan.  Matching
contributions  received  after  September 30, 1998, are made in cash rather than
Owens Corning stock.

(7) SUBSEQUENT EVENT

Effective  January 1, 2000, the Company's match will increase from 35% to 50% of
the  participants'  contributions up to 10% of eligible  compensation at certain
locations.  Beginning January 1, 2000, participants may transfer all prospective
Company match and profit sharing contributions to the investment option of their
choice,  and beginning  February 1, 2000 can redirect 1/3 of such  contributions
made prior to December 31,  1999.  As of January 1, 2001,  1/2 of the  remaining
restricted Company match and profit sharing contributions may be redirected with
the balance becoming unrestricted January 1, 2002.

During 1998,  the Company sold its business of  manufacturing  and selling glass
fiber yarns and specialty  materials to Advanced  Glassfiber Yarns, LLC ("AGY").
As a  result,  effective  January  1,  2000,  employees  of AGY  will no  longer
participate in the Plan. AGY employee  account balances  totaling  approximately
$10 million  were  transferred  into a new plan,  which is  administered  by the
management of AGY.