What type of insulation should I use under my floor?
Insulate Under Floor: Fiberglass insulation batts or rolls are the most economical and easiest DIY choice for insulating between the floor joist in a crawl space. The U.S. Department of Energy recommends R-11 (3½”) insulation under floors in warm climates and an R-25 (6” to 8”) in cold climates.
Should I insulate my subfloor?
A properly insulated subfloor reduces energy costs and will help keep your home comfortable year round. Most homes built before 1990 have insufficient or missing subfloor insulation. A visual inspection of your crawlspace will quickly determine whether insulation is properly installed.
Do you put insulation in floor joists?
Insulating the joists can help create an effective vapor barrier that will keep humidity from sneaking inside your basement and causing the joists to expand and contract. This can be beneficial if you have hardwood floors and are all worried about moisture seeping up from the panels due to bad insulation.
Does floor insulation need to be faced?
The general rule is to lay the faced side of your insulation against the surface closest to your living space. For example, when insulating the sub-floor above an unconditioned crawl space, in most climates, you will want the facing to lie against the subfloor.
How do I keep my insulation from falling down in my crawl space?
Radiant barriers help prevent heat loss by radiation and facilitate to use of strong reflective tapes to seal seams against air movement. This type of insulation is ideal for use in crawl spaces and basements because it won’t be damaged by water, lose R-value, compress or fall out of place.
How do you insulate a crawl space floor?
Fiberglass batts soak up crawl space moisture like a sponge, causing mold and rot. Adding spray foam or rigid foam board insulation to the underside of the floor can help warm up the floor and rooms above the crawl space.