Roof Atic Insulation

The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow.

Roof atic insulation.

However most older attics are under insulated so it s a good idea to raise the r value where possible. Better materials for attic roof insulation are rigid foam boards and spray foam insulation. This type of insulation. Additionally insulation serves as a way to enhance sound proofing on the uppermost envelop of your house.

It s available in fiberglass mineral wool plastic fibers and natural fibers. Technically known as spray polyurethane foam or spf spray foam is most commonly applied in the space between attic rafters. Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. A good rule of thumb is that standard insulation should be inspected to see if it needs to be replaced at least every fifteen years.

It can act as an air and moisture barrier in addition to providing very high r value. A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling. For the same reason insulation shouldn t touch the roof s underside. Insulation goes between roof and interior space if your attic is already finished it probably is at least partially insulated.

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.