BTRboard™ is easy to install.
Installed in the same manner as traditional sheathing BTRboard ensuring compatibility with standard construction practices.
View our guides below for recommended installation details
Wood-framed residential & mid-rise buildings
Zero-lot line walls
Continuous insulation retrofits
Below-grade applications
BTRboard wood based substrate
6” o/c perimeter
12” o/c Studs
Using 3 ½” Ring .131” shank nails
BTRboard Fire-X substrate
6” o/c perimeter
8” o/c Studs
Using 3 ½” Ring .131” shank nails
Allow 1 5/8” space for BTRboard™ at rim to foundation.
Maintain 8” (200 mm) Clearance.
Mark a straight line on the subfloor that represents the width of the wall.
Nail the bottom plate to the floor sheathing using toenails at a 45° angle. This ensures the bottom plate stays in place.
Allow 1/8” space at BTRboard™ joints for expansion and contraction as required by building code.
Square and secure wall to floor. Extend sheathing down to within ¼” of the foundation and extend sheathing above top plates to reach top of sheathed floor.
Before standing first wall, apply sealant as shown. This reduces joints in sheathing at rim joists and produces much better airtightness.
When using BTRboard™ Fire-X, ensure to extend the fire rated panels to the furthest point of the framed wall.
Add blocking when using BTRboard Fire-X.
Cut bottom strips of BTRboard but do not install until after wall is lifted and attached to previous wall.
Apply sealant as previously shown, slide wall to intersect with previous wall and secure top plates and edges. Add bottom strip over bead of sealant to complete.
Maintains continuous insulation with airtight framing joints when rim joists air sealed. Airtight framing allows for removal of higher cost spray foam at rims.
Airtight sheathing can be accomplished using 3M 3015 sheathing tape but may be unnecessary when using spray foam in the cavities between studs.
Trim or router the bottom edge of the sill to match the rough sills. BTRboard provides structural support for windows when treated shims extend from the sheathing to the rough 2×6 sill.
Simple install. Add impermeable membrane. BTRboard OSB supports heavy windows with 3″ shims, but for Fire-X, we recommend a solid OSB surface for weight transfer.
