However most older attics are under insulated so it s a good idea to raise the r value where possible.
Roof atic insulation.
Blanket insulation is available as batts or rolls and is the easiest diy insulation material.
A finished attic should be insulated much like the rest of the house with insulation in the walls and ceiling.
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.
It s available in fiberglass mineral wool plastic fibers and natural fibers.
It can act as an air and moisture barrier in addition to providing very high r value.
Better materials for attic roof insulation are rigid foam boards and spray foam insulation.
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.
This type of insulation.
After this amount of time insulation begins to peel away from the walls and degrade.
Additionally insulation serves as a way to enhance sound proofing on the uppermost envelop of your house.
The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow.