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Louisiana-Pacific Corporation

LP Building Solutions manufactures engineered-wood sheathing, siding, and structural panels, including LP FlameBlock fire-rated OSB sheathing.

Listing health: 5 listed. Soonest expiry: 2027-06-30. Statuses derive from the live program data by a published rule.

Product record	Status	Expires
LP® SmartSide® 38 Series Strand Substrate lap siding WUI assembly	Listed	2027-06-30
LOUISIANA-PACIFIC CORPORATION (8140-2027:0002)	Listed	2027-06-30
LOUISIANA-PACIFIC CORPORATION (8140-2027:0005)	Listed	2027-06-30
LOUISIANA-PACIFIC CORPORATION (8140-2027:0006)	Listed	2027-06-30
LP® FlameBlock® 15/32 sheathing eave assembly	Listed	2027-06-30

Sources

2025 OSFM WUI Listed Products Handbook — CAL FIRE OSFM (official). Accessed 2026-08-23.
LP FlameBlock installation instructions — Louisiana-Pacific Corporation (manufacturer). Accessed 2026-08-25.
LP SmartSide engineered-wood lap siding — Louisiana-Pacific Corporation (manufacturer). Accessed 2026-08-25.