Spray Foam Vs Batt Insulation Basement

Spray foam can be used almost anywhere in the home including exterior walls ceilings floors attics and basements.
Spray foam vs batt insulation basement. It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass. 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. Unlike spray foam insulation that acts on its own fiberglass batt insulation and poly plastic require one another for the system to be effective. 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.
I d blow insulation on the attic floor after air sealing of course. If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary. Spray foam creates an air barrier that will seal up your basement to stop the outside air from getting in. A better option in addition to the roxul is to first use spray foam in all of the headers of your basement this deals with air infiltration and thermal bridging.
Batt insulation is that pink fiberglass found in exterior walls attic floors and the crawlspace ceiling. It is made from fiberglass strands that create a barrier for air flow. A poly plastic layer and sealing is needed to provide an air vapour barrier. Thermal bridging means cold air conducted along the structure from the outside to inside.
Basement insulation better. Basement spray foam insulation pros. This barrier stops air and moisture from entering one environment to the other indoors to outdoors outdoors to indoors. The big disadvantage with spray foam is cost.
Learn more about spray foam. Spray foam insulation has less market share but is increasing in popularity.