How To Insulate On Roof 2x6 Frames
Heat rises and therefore the building regulations requirements for heat loss through roofs are more stringent than those for walls.
How to insulate on roof 2x6 frames. Building regulations for insulating a roof. Nail 1 furring along every rafter side against the roof deck. I m wondering what the best way to insulate this roof would be. If you choose sistering 2x10 s then they have a net depth of 9 1 4.
Soooo then install the same perimeter wood blocking right over the roll roofing to match insulation thickness 5 or so of polyiso. Probably 1000 all put together for an r 49 roof in a 2x6 frame roof. Then a vapor barrier over all that. How to insulate a roof.
The limiting u value the maximise u value which cannot be exceeded required under current building regulations for the roof is 0 20w m. If you choose to use the 2x6 roof joists you ll only be able to fill the joist space up about 4 5. Also adding 2 vents between each bay of rafters which are 2 oc that vent out my soffits. The insulation would be flush with the roof wall 2 6 s.
Cut and insert 1 or thicker high r foam insulation sheets r 8 per inch against the furring giving a 1 or greater air path between the insulation and the roof deck under the cathedral ceiling. However i want to add a wood stove for next winter. I have a 14x26 cabin the roof is 2x6 10 pitch rafters with horizontal 2x4 purlins. Tongue and groove pine over that then.
Screw it down and glue down a 45 mil epdm membrane.