Sentences with phrase «polyisocyanurate rigid foam insulation»
Not exact matches
The graph shows that ccSPF is priced comparable to the rigid board foam plastic products (extruded polystyrene and polyisocyanurate), which are both substantially more expensive than cavity fill fibrous insulation such as fiberglass or cellulose.
https://buildingscience.com/
Roof Assembly: R - 60 (nominal) vented attic: existing slate shingles, underlayment, and board sheathing; in knee wall and at sloped ceilings, 1» layer of polyisocyanurate rigid insulation between rafters, held away at least 1» from board sheathing, covered with closed - cell spray foam; attic above flat ceiling has deep layer of cellulose.
Polyisocyanurate insulation is the most environmentally friendly type of rigid foam insulation, and it has the highest R - value per inch.