Difference Between Crawlspace Insulation And Attic Inuslation

See more on different types of insulation.

Difference between crawlspace insulation and attic inuslation.

In the attic you have worry about heat gain and duct losses. Foam board insulation is easy to use and is a great diy way to add some insulation. Sure there s insulation in your attic and crawlspace. Due to the fact that the ground in crawl spaces is usually a few degrees cooler than the underside of your floor insulation condensation will begin to form on the underside of your floor joists and insulation.

In warm or dry areas insulation can be limited to just the area between the floor joists. Due to the stack effect most of this leakage occurs at the top and bottom of your home your attic and crawlspace. If a crawl space isn t ventilated you ll only need to insulate the walls rather than the subfloor above. Some types of thicker foam board insulation are available but they may need to be special ordered.

To find out if you have enough attic insulation measure the thickness of the insulation. Loose fill insulation is usually less expensive to install than batt insulation and provides better coverage when installed properly. But there s probably nothing to prevent air from moving past plumbing air duct and electrical penetrations. It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches.

The higher the r value the better the thermal performance of the insulation. In a crawlspace you have to worry about critters and duct losses. If there were a way to eliminate the possibility of critters i would prefer the cooler location for ducts. Or attic staircase hatches.

With new construction i would look for a way to have them in conditioned space. Learn the difference between radiant barrier vs. Modern houses built on crawl spaces place insulation usually fiberglass batt insulation in between the floor joists. Thermal insulation as well as how to make the right selection for your albany new york area home.

Convection conduction and radiation. 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. Then install a vapor moisture barrier between the exterior and interior crawl space surface before adding the insulation to keep inevitable moisture from seeping through. However in subfreezing temperatures insulating the walls and sealing off the crawl space is most effective.

The table below shows what levels of insulation are cost effective for different climates and locations in the home. R value is a measure of insulation s ability to resist heat traveling through it. Thermal insulation for albany homes to understand how insulation works it s helpful to realize that heat flows in three ways. Loose fill or batt insulation is typically installed in an attic.