Best Insulation For Attic Crawl Space

Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

Best insulation for attic crawl space.

Unvented unvented crawl spaces are a conditioned part of your home and don t circulate air with the outside. Snakes spiders and squirrels have also. The best insulation material for crawl spaces is a rigid foam insulation board. However when adding multiple layers of insulation you want to make sure that only one layer has faced and that the facing does not lie against the second insulation layer.

Mice love old insulation. Loose cellulose is made of 85 percent recycled material mostly ground up newspaper. Blanket insulation is available as batts or rolls and is the easiest diy insulation material. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

It s available in fiberglass mineral wool plastic fibers and natural fibers. It is also very easy to install a higher thickness for greater r value. This is the most common type of crawl space. Vented a vented crawl space is one that is not conditioned and where air circulates from outside.

This type of insulation. Blown in cellulose is an excellent option for an attic because it will fill all the joist spaces completely with very few air gaps. Fiberglass insulation works as an insulator because it traps air in the fibers of the insulation and slows the collision of warm and cold air. In order for fiberglass to work properly it needs to be in a clean dry space and an open crawl space is not that place.

Unlike fiberglass a properly sealed foam board does not absorb water support mold or allow air to pass through. Insulation facing is a moisture or vapor barrier so it only makes sense to use faced insulation in your crawl space.