28 Sep '12, 1pm

“Stopping air leaks is just as important as — maybe more important than — adding insulation..." Joe L. :

“Stopping air leaks is just as important as — maybe more important than — adding insulation..." Joe L. :

“Stopping air leaks is just as important as — maybe more important than — adding insulation. Unless builders prevent air from leaking through walls and ceilings, insulation alone won't do much good.” “If you choose an insulation that doesn't stop air flow , it's important to install an adjacent air barrier material.” “Fiberglass batts are air-permeable — they do a poor job of resisting airflow — so it is essential that they be installed in continuous contact with an impeccable barrier to air movement. For the very best performance, fiberglass batts should be installed in a sealed cavity (for example, a stud or joist bay) with an air barrier on all six sides.” “Dense-packed cellulose resists air infiltration better than fiberglass batts, but it's not an air barrier.” “Spray polyurethane foam is better than any other type of insulation at reducing air leakage.” “Fiberglass-i...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/musings/ai...

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