Proper Way To Insulate An Attic

The table below shows what levels of insulation are cost effective for different climates and locations in the home. A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling. That means insulating the attic floor only not the walls and having vents in the roof.

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The higher the r value the better the thermal performance of the insulation.

Proper way to insulate an attic.

Insulate and air seal any knee walls vertical walls with attic space directly behind them in your home as well. R value is a measure of insulation s ability to resist heat traveling through it. Insulating the attic is a surefire way to warm your home this winter. If you re finishing your attic insulating it to the proper r value can cause a dramatic loss of headroom if you limit yourself to fiberglass batts.

So it s time to pay close attention to what s happening up there. Insulation level are specified by r value. Before insulating seal any air leaks and make roof and other necessary repairs. Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer.

With a finished attic insulation must help keep the attic areas comfortable. Lay the batts across the ceiling joists covering the existing insulation. When you insulate attics and crawlspaces you ve got to vent them too. How to insulate a finished attic.

It s a diy project you can tackle in a weekend and the savings you ll get add up every year says toh general contractor tom silva. While wearing dust mask and gloves carry r 38 batts of unfaced fiberglass insulation into the attic. Since home insulation changes the way attics and crawlspaces breathe it s critical that you maintain or install proper ventilation fig. But if you ve got an unfinished attic giving it proper insulation is one of the simplest ways to keep a lid on your heating bill this season.

In this video this old house general contractor tom silva and host kevin o connor explain how to insulate an attic. At first it seems odd to add insulation for warmth and then purposely create ventilation holes for cold air to enter. But other home maintenance tasks can also defend your house and all of its inhabitants from chilly weather and blustering winds. To meet all three goals insulating your finished attic ventilating the roof and maximizing headroom use a combination of dense batt insulation rigid foam sheeting and air chutes.

If it is located in a conditioned part of the house also remember to insulate and air seal your attic access.

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