SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ------------------------------------ SCHEDULE 14D-1 TENDER OFFER STATEMENT (Pursuant to Section 14(d)(1) of the Securities Exchange Act of 1934) AND SCHEDULE 13D (Under the Securities Exchange Act of 1934) (FINAL AMENDMENT) ABT BUILDING PRODUCTS CORPORATION (NAME OF SUBJECT COMPANY) STRIPER ACQUISITION, INC. LOUISIANA-PACIFIC CORPORATION (BIDDERS) COMMON STOCK, PAR VALUE $0.01 PER SHARE 000782102 (TITLE OF CLASS OF SECURITIES) (CUSIP NUMBER OF CLASS OF SECURITIES) ------------------------------------ GARY C. WILKERSON, ESQ. VICE PRESIDENT AND GENERAL COUNSEL LOUISIANA-PACIFIC CORPORATION 111 S.W. FIFTH AVENUE PORTLAND, OREGON 97204 (503) 221-0800 (NAME, ADDRESS AND TELEPHONE NUMBER OF PERSON AUTHORIZED TO RECEIVE NOTICES AND COMMUNICATIONS ON BEHALF OF THE PERSONS FILING STATEMENT) ---------------------------------------------- COPIES TO: ROBERT A. PROFUSEK, ESQ. MARK E. BETZEN, ESQ. JONES, DAY, REAVIS & POGUE 599 LEXINGTON AVENUE NEW YORK, NEW YORK 10022 (212) 326-3939

SCHEDULE 14D-1 - ------------------------------------------------------------------------------- - ------------------------------------------------------------------------------- CUSIP NO. 000782102 - ------------------------------------------------------------------------------- - ------------------------------------------------------------------------------- - ------------------------------------------------------------------------------- - ------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Striper Acquisition, Inc. - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP a / / b /X/ - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* AF (See Item 4 below) - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(e) or (f) / / - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 7 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 10,529,815 common shares - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 8 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (7) EXCLUDES CERTAIN SHARES* - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 9 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (7) 98.6% - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 10 TYPE OF REPORTING PERSON* CO - -------------------------------------------------------------------------------- - --------------------------------------------------------------------------------

SCHEDULE 14D-1 - ------------------------------------------------------------------------------- - ------------------------------------------------------------------------------- CUSIP NO. 000782102 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON Louisiana-Pacific Corporation 93-0609074 - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP a / / b /X/ - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 3 SEC USE ONLY - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 4 SOURCE OF FUNDS* WC; BK (See Item 4 below) - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(e) or (f) / / - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 7 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 10,529,815 common shares - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 8 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (7) EXCLUDES CERTAIN SHARES* / / - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 9 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (7) 98.6% - -------------------------------------------------------------------------------- - -------------------------------------------------------------------------------- 10 TYPE OF REPORTING PERSON* CO - -------------------------------------------------------------------------------- - --------------------------------------------------------------------------------

This Final Amendment supplements and amends the Tender Offer Statement on Schedule 14D-1 and Schedule 13D filed with the Securities and Exchange Commission on January 25, 1999, as amended on February 8, 1999 and February 11, 1999 (the "Statement"), by Louisiana-Pacific Corporation, a Delaware corporation, and Striper Acquisition, Inc., a Delaware corporation and a wholly owned subsidiary of Parent, ("Purchaser"), relating to the offer by Purchaser to purchase all of the outstanding shares of common stock, par value $0.01 per share (the "Shares"), of ABT Building Products Corporation, a Delaware corporation, at $15.00 per Share, net to the seller in cash. Except as otherwise indicated herein, the information set forth in the statement remains unchanged, and each capitalized term used herein and not defined herein has the meaning ascribed to such term in the Statement. ITEM 10. ADDITIONAL INFORMATION The response to Item 10(f) of the Statement is hereby supplemented and amended by adding the following: On February 24, 1999, Purchaser issued a press release announcing the completion and results of the Offer. A copy of the press release is filed as Exhibit (a)(9) hereto, and the information set forth therein is incorporated herein by reference. ITEM 11. MATERIAL TO BE FILED AS EXHIBITS. The response to Item 11 of the Statement is hereby supplemented and amended by adding the following exhibit: (a)(9) Press release issued by Purchaser on February 24, 1999, announcing the completion and results of the Offer. -4-

SIGNATURE After due inquiry and to the best of its knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct. Dated: February 24, 1999 STRIPER ACQUISITION, INC. By: /s/ MARK A. SUWYN ------------------------------------------- Name: Mark A. Suwyn Title: President LOUISIANA-PACIFIC CORPORATION By: /s/ GARY C. WILKERSON ------------------------------------------- Name: Gary C. Wilkerson Title: Vice President and General Counsel -5-

INDEX TO EXHIBITS Exhibit - ------- (a)(9) Press release issued by Purchaser on February 24, 1999 announcing the completion and results of the Offer............................ -6-

EXHIBIT (A)(9) -7-

Contact: Bill Hebert (Invest. Relations) or Gerry Soud (Media Relations) LOUISIANA-PACIFIC CORP. SUCCESSFULLY COMPLETES TENDER OFFER FOR ABT BUILDING PRODUCTS CORP. (Portland, Ore; February 24, 1999) -- Louisiana-Pacific Corporation (NYSE:LPX) announced today the successful completion of its tender offer for shares of ABT Building Products Corporation (ABTco). The tender offer, at $15.00 per share for all outstanding ABTco shares, was made pursuant to a merger agreement between Louisiana-Pacific and ABTco. The offer expired at 12:00 midnight (EST) on Tuesday, February 23, 1999. First Chicago Trust Company of New York, the depositary for the tender offer, has advised Louisiana-Pacific that, based on a preliminary count, 10,529,815 shares of ABTco common stock (including 35,437 shares subject to guarantees of delivery), representing more than 98% of all outstanding ABTco common shares, were purchased by Louisiana-Pacific pursuant to the offer. The depositary will commence delivery of payments to tendering stockholders as soon as possible. Louisiana-Pacific will acquire the remaining 144,345 ABTco common shares through a cash merger to be completed in a few days. In the merger, the remaining ABTco common shares will be converted into the right to receive $15.00 per share in cash, the same amount paid in the tender offer. Louisiana-Pacific, now in its 26th year, is a major building products company headquartered in Portland, Oregon, with manufacturing facilities throughout the U.S. and in Canada and Ireland. Visit L.P.'s website at: www.LPCorp.com. # # # -8-