Proven to slow down the spread of flames, LP® FlameBlock® Fire-Rated Sheathing is evaluated to meet code requirements for fire resistant construction. The LP FlameBlock installation process is simple and allows for design flexibility as it can be applied in many different wall assemblies.
Keep these tips in mind to help your LP® FlameBlock® Fire-Rated Sheathing installation go smoothly and to keep the product in great shape.
To start your LP FlameBlock installation for Construction Types III, IV, V and residential, place skid-resistant side up with the white fire-resistant surface facing down if exposure is from the underside. Install with the white side facing upwards when used under fire-classified roof membranes if exposure is from the outside. For construction types I and II, 2-sided LP FlameBlock sheathing should be used.
Install with the long dimension across supports over two or more spans. Provide 1/8˝ gap at panel ends and edges (use a spacer tool to ensure consistent spacing). Panel end joints should occur over framing.
In the absence of project specifications, nail panels 6˝ on center along supported ends and edges and 12˝ on center at intermediate supports. Fasten panels 3/8˝ from panel edges. Use 8d common nails for panels up to 1˝ thick; use 10d common nails for panels up to 1-1/4˝ thick.
Cover sheathing as soon as possible with roofing. If edge swelling occurs, sand joints flat between installing roofing.
When installing as part of a wall assembly, LP FlameBlock Fire-Rated Sheathing panels should be installed as specified in the assembly. In the absence of an assembly, panels should be installed vertically with all unsupported panel edges blocked.
To determine the proper orientation of the white fire-resistant panel surface, consult approved construction plans and relevant code requirements before beginning your LP FlameBlock installation.
Provide 1/8˝ gap at panel ends and edges (use a spacer tool to ensure consistent spacing).
In the absence of project specifications, nail panels 6˝ on center along supported ends and edges and 12˝ on center at intermediate supports. Fasten panels 3/8˝ from panel edges. Use 6d common nails for panels up to 1/2˝ thick, 8d common nails for panels up to 1˝ thick and 10d common nails for panels up to 1-1/4” thick.