Attic Insulation - Floors of Vented Attics in Cold/Dry Climates
Stack effect occurs when heated air escapes through the ceiling into the attic from upper levels of the home and is replaced in lower levels of the home by drawn-in, outdoor air. This occurs with conventional insulation types, such as fiberglass and cellulose, because they don’t meet air barrier standards (based on air permeability testing, ASTM E 283). Therefore they don’t sufficiently stop air flow/leaks like Icynene® spray foam insulation does, and they can sag or settle over time.
In heavy snowfall areas, ice damming is a common problem due to warm, moist interior air coming into contact with the cold roof surface, where the moisture then condenses and freezes.
Results of Insulating Attic Floor with Icynene Spray Foam Insulation
Improves in energy performance for savings of up to 50%
Minimizes potential for water/moisture damage and associated health concerns (mold) that can result from ice dams