Roof Atic Insulation

This type of insulation.

Roof atic insulation.

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. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. It can act as an air and moisture barrier in addition to providing very high r value.

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. Blanket insulation is available as batts or rolls and is the easiest diy insulation material. Technically known as spray polyurethane foam or spf spray foam is most commonly applied in the space between attic rafters. For the same reason insulation shouldn t touch the roof s underside.

However most older attics are under insulated so it s a good idea to raise the r value where possible. After this amount of time insulation begins to peel away from the walls and degrade. It s available in fiberglass mineral wool plastic fibers and natural fibers. Insulation goes between roof and interior space if your attic is already finished it probably is at least partially insulated.

Insulation roofing there are various factors that affect how often a home s attic insulation should be replaced.