Installing Styrofoam In Attic

Your board must leave at least inch gap between the board and the roof.

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. Roof attic insulation of foam baffles ventilate insulate cold hot air youtube. 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 the barrier by stretching it across the rafters from one end of the attic to the other and stapling it to the rafter faces.

Measure the length and width between two rafters in your attic and transfer the measurements to a 4 ft by 8 ft of rigid foam insulation board. To create an airtight seal use foil tape. 2 snap a chalk line between the length measurements. Nothing unusual about that.

When installing foam insulation boards in the attic make sure you start from one corner and work your way around the room. 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. Work from the ridge toward the wall plates overlapping the. A brief snippet of how and why i used rigid foam insulation for some areas of the tiny house.

Install foam boards with the foil side facing you.