Spray Foam Vs Batt Insulation Basement

Spray foam insulation is designed to fill all of the nooks and crannies wherever it is applied including your basement.

Spray foam vs batt insulation basement.

A poly plastic layer and sealing is needed to provide an air vapour barrier. This barrier stops air and moisture from entering one environment to the other indoors to outdoors outdoors to indoors. Thermal bridging means cold air conducted along the structure from the outside to inside. If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary.

Spray foam insulation has less market share but is increasing in popularity. It is made from fiberglass strands that create a barrier for air flow. Unlike spray foam insulation that acts on its own fiberglass batt insulation and poly plastic require one another for the system to be effective. Spray foam creates an air barrier that will seal up your basement to stop the outside air from getting in.

Basement spray foam insulation pros. For instance a 5 5 inch wall cavity can be filled with 2 inches of foam and an r 13 fiberglass batt as a cost effective system that seals the walls with an r 25 insulation system exceeding u s. Batt insulation is that pink fiberglass found in exterior walls attic floors and the crawlspace ceiling. I d blow insulation on the attic floor after air sealing of course.

Spray foam insulation doesn t retain water so it also doesn t promote mold. Spray foam can be used almost anywhere in the home including exterior walls ceilings floors attics and basements. Learn more about spray foam. Fiberglass insulation is significantly cheaper than spray foam insulation but it is also less effective especially in extremely cold conditions used in roughly 85 of american homes fiberglass insulation is the most common form of home insulation.

It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass. The big disadvantage with spray foam is cost.