Attic Insulation Facts

At a minimum homes should have attic insulation between r 22 and r 49 6 to 13 in.

Attic insulation facts.

Of loose fill or 7 to 19 in. This is a powered attic ventilation fan. The rapid growth of sprayed foam insulation in building construction thanks in part to its immediate and long term. Attic insulation facts if you want to know what every homeowner should know about attic insulation read on to learn more.

Provide the recommended level of insulation under floors above unheated spaces around walls in a heated basement or unventilated crawl space and on the edges of slabs on grade. Blown in spray foam batts and blankets. Bulky materials resist conductive and to a lesser degree convective heat flow in a building cavity. Asbestos insulation originated in ancient greece.

The earliest form of insulation was during the middle ages when the walls of homes were stuffed with mud and straw to keep out the cold. Although spray foam insulation has been in use since the 1940s primarily for aircraft for the past 30 years continual product innovation has seen the increased adoption of spray foam insulation in residential and commercial construction. Check with the local building department to find the recommended level for your area or visit energysavers gov. We offer our review of the three most popular types of attic insulation with a look at each one s pros and cons.

For example loose fill insulation is calculated based on depth while blanket insulation is based on the number of batts or rolls you need. If it doesn t have excellent intake air around the soffits it can actually vacuum air from inside your home. Powered attic fans attic insulation facts kitchen ventilation text. Insulate your attic to the recommended level including the attic door or hatch cover.

Where to insulate insulate your attic outer walls and crawl space first as these areas have the most heat transfer. Insulation materials run the gamut from bulky fiber materials such as fiberglass rock and slag wool cellulose and natural fibers to rigid foam boards to sleek foils. Rigid foam boards trap air or another gas to resist conductive heat flow. In most homes but especially in older homes adding insulation in the attic will cut heat loss.

Because insulation plays a major role in your home s weatherization knowing some basic facts about insulation can help you stay more comfortable and lower your energy bills year round. Here are some fun facts about insulation from our heating and cooling service company. Insulation priorities it is most important to.