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.
If you have vermiculite in your attic don t disturb it unless you have a sample checked by an accredited laboratory.
You can achieve better thermal performance in your attic by adding an additional layer of insulation.
The space above the top plate of exterior walls at the bottom of each rafter bay is especially important.
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.
Flexible formaldehyde free glass mineral wool.
Pa302 2 ceilings without attic spaces n1102 2 2 r402 2 2.
Unlike typical insulation installed between framing members continuous insulation provides an uninterrupted thermal barrier for unparalleled performance.
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.
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.
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.
Design the roof with raised heel trusses to allow full insulation over the top plates of the exterior walls.
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.
You can use rigid foam panels or do as tom silva does with nearly all houses these days.
Achieving greater r values in exterior walls in exterior walls add insulating sheathing to achieve a greater r value in your wall system.
85 minimum to bs en iso 14021.
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.
Asbestos has been found in some types of vermiculite insulation.
The higher the r value the better the thermal performance of the insulation.
Design the roof to allow full insulation over the top plates of the exterior walls.
Vermiculite a lightweight material resembling gravel was used as attic insulation in perhaps as many as a million homes.
Insulation cover should be even and continuous right to the eaves.
