Proper Roof Insulation

Always cover the tops of the ceiling joists to make sure the insulation is deep enough to reach your target r value and.

Proper roof insulation.

Recommended home insulation r values insulation level are specified by r value. Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value. By the mother earth news editors. Because the roof isn t in play here it doesn t matter how many hips valleys dormers or gables there are.

The most proper insulation level to use on ceilings are r 30 batts that are as thick as r 25 batts but fit into a 2x10 framing. Like other batt type insulation fiberglass has a predictable r value if not compressed but is difficult to fit around obstacles without leaving gaps. Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces. This is different from the normal roll up type of insulation as it comes in panels rather than paper covered fiberglass.

The first step in insulating your attic or roof is to lay the blanket insulation. Fiberglass batts the insulation found in most houses in the u s are inexpensive and quick to install. This guide to proper attic insulation includes tips on vent areas right side up puckers loose or compressed insulation animal nests mold and more. A vent baffle should be installed between the insulation and the roof decking to maintain the ventilation channel.

In most climates it needs a vapor barrier. It s also easier and often less expensive to pile on fiberglass or cellulose insulation at the attic floor to hit target r values than it is to achieve a comparable r value in the roof plane. But there are small improvements many homeowners overlook that can make a huge difference. More insulation installation tricks and tips work from the perimeter of the attic toward the door or hatch so that you don t trample all over the insulation you just.

This foam can be used on either the outside or the inside of the sheathing. Insulation puts the money back in your pocket by protecting your home from the elements and lowering energy costs. You put a lot into keeping your home running. Get the most out of your home with proper roof insulation.

The best material for use with metal roof insulation is in the form of foam batting.