Best Insulation For Attic Crawl Space

Blanket insulation is available as batts or rolls and is the easiest diy insulation material.

Best insulation for attic crawl space. The fluffy fiberglass center makes a perfect place to build a nest. Snakes spiders and squirrels have also. Insulation facing is a moisture or vapor barrier so it only makes sense to use faced insulation in your crawl space. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

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. Vented a vented crawl space is one that is not conditioned and where air circulates from outside. This is the most common type of crawl space. Unlike fiberglass a properly sealed foam board does not absorb water support mold or allow air to pass through.

Unvented unvented crawl spaces are a conditioned part of your home and don t circulate air with the outside. This type of insulation. 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. It is also very easy to install a higher thickness for greater r value.

Blown in cellulose is an excellent option for an attic because it will fill all the joist spaces completely with very few air gaps. 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. 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. You can install the board against the crawl space foundation walls instead of between floor joists.

Loose cellulose is made of 85 percent recycled material mostly ground up newspaper. It s available in fiberglass mineral wool plastic fibers and natural fibers.