Continuous Insulation On Attic Eave Wall

If you re considering turning your attic into conditioned storage or living space it s worth changing tactics to insulate between the rafters and wall joists instead of the floor.

Continuous insulation on attic eave wall.

Applications of continuous insulation. 85 minimum to bs en iso 14021. Design the roof to allow full insulation over the top plates of the exterior walls. Baffles placed in this area channel intake air into either the attic space or vent chutes and also prevent insulation from falling into the soffit and blocking airflow.

Unlike typical insulation installed between framing members continuous insulation provides an uninterrupted thermal barrier for unparalleled performance. You can use rigid foam panels or do as tom silva does with nearly all houses these days. Install raised heel trusses or use another roof framing method that allows space to install insulation over the top plates of the exterior walls or install high density insulation to achieve an r value that meets or exceeds code minimums for attic insulation. Continuous insulation products can also serve as the water resistant barrier and air barrier for a structure providing a 3 in 1 building envelope solution.

Flexible formaldehyde free glass mineral wool. Asbestos has been found in some types of vermiculite insulation. Achieving greater r values in exterior walls in exterior walls add insulating sheathing to achieve a greater r value in your wall system. Insulation cover should be even and continuous right to the eaves.

For decades the typical solution to this problem was to install ventilation baffles near the eaves connecting the air space above the soffit vents with the attic and then to install as much fluffy insulation usually fiberglass or cellulose as there was room for between the top plate of the exterior wall and the ventilation baffle. If you have vermiculite in your attic don t disturb it unless you have a sample checked by an accredited laboratory. The space above the top plate of exterior walls at the bottom of each rafter bay is especially important. Where the design of the roof ceiling assembly does not allow sufficient space for the required insulation such as cathedral ceilings the minimum required insulation for such roof ceiling assemblies shall be r 30.

Pa302 2 ceilings without attic spaces n1102 2 2 r402 2 2. R 38 shall be deemed to satisfy the requirement for r 49 wherever the full height of uncompressed r 38 insulation extends over the wall top plate at the eaves. Design the roof with raised heel trusses to allow full insulation over the top plates of the exterior walls. An attic s intake vents are most commonly installed directly in the soffit either as individual vents spaced every few feet or as one continuous perforated soffit running the entire length of.

Ensure meets any eaves insulation and or internal wall insulation to prevent cold bridge at eaves without blocking any ventilation paths required to loft space roof space. Vermiculite a lightweight material resembling gravel was used as attic insulation in perhaps as many as a million homes.