Difference Between Crawlspace Insulation And Attic Inuslation

Insulate your attic outer walls and crawl space first as these areas have the most heat transfer.

Difference between crawlspace insulation and attic inuslation.

The ideal attic insulation r value is different than the ideal wall insulation r value. You can mix the type and material of insulation too. Look for insulating pre cut jackets or blankets with an insulating value of at least r 8. A crawl space isn t a livable part of the home but insulation is still important to keep the heat in.

R value is a measure of insulation s ability to resist heat traveling through it. Adding insulation to your water heater can reduce standby heat losses by 25 to 45 percent. It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches. Insulation facing is a moisture or vapor barrier so it only makes sense to use faced insulation in your crawl space.

The higher the r value the better the thermal performance of the insulation. Foam board insulation is easy to use and is a great diy way to add some insulation. 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. Crawl spaces can be a major source of energy loss.

If you find yourself running your furnace all winter long driving up high energy bills yet still feel cold on the ground floor of your home your crawl space could be the issue. Insulation level are specified by r value. Achieving greater r values in attics. Some types of thicker foam board insulation are available but they may need to be special ordered.

The table below shows what levels of insulation are cost effective for different climates and locations in the home.