How To Insulate A Crawl Space Floor

Fiberglass insulation batts or rolls are the most economical and easiest diy choice for insulating between the floor joist in a crawl space.

How to insulate a crawl space floor.

Cold air that sweeps through a crawl space meanwhile can lead to cold floors inside the home whether or not the space is wet. Floor insulation for moderate climes popular reads. Department of energy recommends r 11 3 insulation under floors in warm climates and an r 25 6 to 8 in cold climates. Sealing or encapsulating your crawl space will keep moisture out so your insulation doesn t form any mold.

Here s what you need to know about crawl space insulation. A crawl space under a house helps protect against certain pests but a crawl space with abundant moisture can invite problems including mold wood rot and vermin. A temperate lower area that will keep upper floors warm while your home s foundation remains in sound condition. Crawl space insulation is a great way to give the area its best chance at properly regulating temperatures and maintaining quality air conditions within your home.

This type of crawl space also allows insulation with an r value of 19 installed in the floor joist if the crawl space and has a permanently installed dehumidifier. Once you insulate the walls you can put insulation between the joists on the crawl space s ceiling to keep the main floors feeling warm. Insulation helps keep the outside temperature from coming into your home. I actually installed the rigid boards before the floor sheathing was installed.

In moderate or dry climates without the threat of sustained subfreezing temperatures insulation between floor joists makes sense. After that you can insulate the crawl space walls so cold air is less likely to come in. I recently used closed cell foam to insulate a crawl space. Where winter temperatures are extreme opt for insulating the walls and sealing off the crawl space entirely.

Proper crawl space insulation also can prevent your crawl space from becoming a moist environment that grows and harbors mold and mildew controlling crawl space temperature and moisture is a dual process that works toward a common goal. However the insulation needs to be treated with a fire retardant. The flame ignited the actual insulation or the insulation s paper facing. This way i was never crawling around on my back in a tight damp crawl space.