Your board must leave at least inch gap between the board and the roof.
Foam insulating attic.
Install foam boards with the foil side facing you.
Get free shipping on qualified attic foam board insulation or buy online pick up in store today in the building materials department.
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To create an airtight seal use foil tape.
Attic foam board insulation.
Spray polyurethane foam will provide thermal insulation that will minimize air infiltration which can help to save on heating and cooling costs within the indoor environment.
This alternative to traditional building insulation fiberglass can be applied into wall cavities holes concrete slabs and even onto roof tiles and attic insulation.
2 in x 4 ft x 8 ft 1 unfaced polystyrene foam board insulation.
Kingspan insulation r 10 common.