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.

It s available in fiberglass mineral wool plastic fibers and natural fibers. After this amount of time insulation begins to peel away from the walls and degrade. Technically known as spray polyurethane foam or spf spray foam is most commonly applied in the space between attic rafters. Better materials for attic roof insulation are rigid foam boards and spray foam insulation.

It can act as an air and moisture barrier in addition to providing very high r value. Insulation goes between roof and interior space if your attic is already finished it probably is at least partially insulated. A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling. Additionally insulation serves as a way to enhance sound proofing on the uppermost envelop of your house.

For the same reason insulation shouldn t touch the roof s underside. 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. Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. Blanket insulation is available as batts or rolls and is the easiest diy insulation material.

However most older attics are under insulated so it s a good idea to raise the r value where possible.