As long as it's not on OSB;
• When using medium-density (MD) foam
in walls as both insulation and vapour
barrier, a minimum thickness of 40 mm
• When placing a foam product in an
exterior wall assembly, ensure that the
moisture flowing through the foam will
not affect other materials. This could
happen when moisture is trapped in a
moisture-sensitive material, such as
plywood or OSB, and drying is prevented
by the layer of SPF.
Clothes taking longer to dry?
Clean the dryer screen in HOT water if using fabric softener sheets.
They leave a residue that impedes air-flow, costing you money.
Clean the ducting in the last six months? 17,000 dryer fires annually!