Best Insulation For Attic Roof

Achieving greater r values in attics.

Best insulation for attic roof. It can be installed in one of two places. If you put an air permeable insulation material over a hole in your ceiling you may have comfort indoor air quality durability and efficiency problems. Insulation ratings can be improved by adding more layers of insulation. R value is a measure of insulation s ability to resist heat traveling through it.

Installing attic roof insulation instead of attic floor insulation has several benefits. Make sure your home is properly insulated in all these locations. Modern technology of blanket insulation today is considered the best insulation for attic. Box out light fixtures.

A flat roof should preferably be insulated from above. The higher the r value the better the thermal performance of the insulation. Attic insulation plays a critical role any home s overall comfort and energy efficiency. A layer of rigid insulation board can be added either on top of the roof s weatherproof layer or directly on top of the timber roof surface with a new weatherproof layer on top of the insulation.

Insulation level are specified by r value. Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be. Before you ever get insulation anywhere near the attic though make sure that you get the air leakage sites sealed up. Additionally insulation serves as a way to enhance sound proofing on the uppermost envelop of your house.

You can mix the type and material of insulation too. So it s time to pay close attention to what s happening up there. With a finished attic insulation must help keep the attic areas comfortable. This is best done when the roof covering needs replacing anyway.

That means insulating the attic floor only not the walls and having vents in the roof. A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling. Among commonly used types of insulation there are mineral wool or fiberglass rolls and batts rigid fiberglass board loose fill materials cellulose mineral wool etc. Water is insulation s enemy.

The ideal attic insulation r value is different than the ideal wall insulation r value. The table below shows what levels of insulation are cost effective for different climates and locations in the home. How to insulate a finished attic. Insulating in and around your roof attic space also prevents long term damage from moisture build up or ice damming which results from the warm air trying to escape through the apex of the roof but instead heating up the snow.

Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer.