Installing Styrofoam In Attic

A brief snippet of how and why i used rigid foam insulation for some areas of the tiny house.

Installing styrofoam in attic.

You first install a very large amount of non permeable foam insulation it the rafters above your head in region 5 r 20 of insulation in order to prevent condensation seal it with spray foam and then attach an ignition barrier such as rock wool or drywall beneath the foam. Foam insulation boards can be attached to concrete walls as well and in such a case care should be taken not to chip the cement. Earlier this year i got a question about a home that had spray foam insulation in the attic. Install the barrier by stretching it across the rafters from one end of the attic to the other and stapling it to the rafter faces.

Your board must leave at least inch gap between the board and the roof. Use furring strips nailed into the sides of the rafters so that you have something to fasten the board to. Work from the ridge toward the wall plates overlapping the. Roof attic insulation of foam baffles ventilate insulate cold hot air youtube.

When installing foam insulation boards in the attic make sure you start from one corner and work your way around the room. A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents. Install foam boards with the foil side facing you. Roof attic insulation of foam baffles ventilate insulate cold hot air.

2 snap a chalk line between the length measurements.