Skylight Insulation Attic

These range in price from 150 500 for a 2 x 4 ft sized skylight.

Skylight insulation attic.

However these kits are for use with asphalt shingles. Rigid foam is the optimal choice for an attic. Skylights are now sold as kits that usually include the necessary flashing materials as well. With a finished attic insulation must help keep the attic areas comfortable.

Materials for a skylight are fairly basic especially in the attic. If a skylight shaft contains an air permeable insulation such as cellulose or fiberglass the insulation should be enclosed on the attic side to create an air barrier. Unsealed attics are often insulated along the attic floor with blown fiberglass or cellulose insulation. That means insulating the attic floor only not the walls and having vents in the roof.

How to insulate and air seal skylight shaft walls. If a skylight is installed in the roof over an attic a shaft must be built to connect the skylight with the ceiling underneath. A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling. Because the shaft walls separate the interior of the house from an unconditioned attic it s essential that they be well insulated.

Learn how to insulate a skylight shaft here. How to insulate a finished attic. Set aside existing attic floor insulation to expose the framing at the base of the skylight shaft to be air sealed. Repair skylight flashing from the roof exterior and replace any damaged framing as necessary.