Fire-Rated Wall Assemblies

LP® FlameBlock® Fire-Rated OSB Sheathing is a component of the following code-compliant fire-rated assemblies.

Assembly Options

Construction Type
All

All

Single Family

Townhouse Separations

Type I/II Construction

Type III Construction

Type V Construction

Resistance Type
All

All

No Rating

45-Minute Either Side

1-Hour Either Side

1-Hour Walls Back to Back

1-Hour Interior Only

2-Hour Interior Only

2-Hour Interior/1-Hour Exterior

2-Hour Either Side

Stud Type
All

All

Steel

Wood

Layers of a V340 assembly
V340
Layers of a V337 assembly
V337
Layers of a LPB/WPPS 60-02 - Non Load Bearing (2-Sided FlameBlock Panels) assembly
V337 with 3/4" Stucco
Layers of a LPB/WPPS 60-02 - Non Load Bearing (2-Sided FlameBlock Panels) assembly
V337 with 2.3" Brick
Layers of a U349 with 3.4" Brick (2-Hour Exterior) assembly
U349 with 3.4" Brick
Layers of a U348 with 3/4" Stucco assembly
U348 with Stucco