Tempo:
Figures 21 and 22 show examples of walls insulated within and outboard of the framing space appear in. Some types of semi-rigid insulation come with a spun-bonded polyolefin sheet attached to one surface. This material is vapour permeable but air impermeable, and may serve as an air barrier
if the joints between the sheets are taped and if the air barrier system is continuous and sealed at doors, windows and other penetrations. If the air barrier is provided on the interior of the building envelope, the exterior rigid insulation does not need to be sealed unless it is also part of the second plane of protection resisting water ingress.
21 Brick veneer cladding with insulation in the framing space and outboard 12.7 mm (1⁄2 in.) gypsum board polyethylene sheet batt insulation 38 x 140 mm (2 x 6 in.) framing rigid insulation sheathing sheathing membrane (air barrier) 100 mm (4 in.) clay brick 25 mm (1 in.) air space
22 Siding with insulation in the framing space and outboard 12.7 mm (1⁄2 in.) gypsum board polyethylene sheet batt insulation 38 x 89 mm (2 x 4 in.) framing expanded polystyrene nailed to studs sheathing membrane (air barrier) horizontal siding attached studs
Note: Bracing required in walls at corners.
if the joints between the sheets are taped and if the air barrier system is continuous and sealed at doors, windows and other penetrations. If the air barrier is provided on the interior of the building envelope, the exterior rigid insulation does not need to be sealed unless it is also part of the second plane of protection resisting water ingress.
21 Brick veneer cladding with insulation in the framing space and outboard 12.7 mm (1⁄2 in.) gypsum board polyethylene sheet batt insulation 38 x 140 mm (2 x 6 in.) framing rigid insulation sheathing sheathing membrane (air barrier) 100 mm (4 in.) clay brick 25 mm (1 in.) air space
22 Siding with insulation in the framing space and outboard 12.7 mm (1⁄2 in.) gypsum board polyethylene sheet batt insulation 38 x 89 mm (2 x 4 in.) framing expanded polystyrene nailed to studs sheathing membrane (air barrier) horizontal siding attached studs
Note: Bracing required in walls at corners.
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