Technically known as spray polyurethane foam or spf spray foam is most commonly applied in the space between attic rafters.
Best insulation for attic roof.
For diy attic insulation you ve got two choices.
Rolls and batts are produced of mineral wool and fiberglass.
There are other materials and systems that you can use to insulate your attic.
The later is used in new construction as the interior board serves as an inner wall.
Among commonly used types of insulation there are mineral wool or fiberglass rolls and batts rigid fiberglass board loose fill materials cellulose mineral wool etc.
It typically has 3 variations.
It s available in fiberglass mineral wool plastic fibers and natural fibers.
Loose fill or batt the common term for blanket insulation.
Bare foam board one sided sheathing board or double sided which is also reference as structural insulated panels.
It s a sandwich of rigid foam insulation and plywood or osb oriented strand board the flaky plywood.
Both can be added to uninsulated attics or layered over existing material.
It can act as an air and moisture barrier in addition to providing very high r value.
Blanket insulation is available as batts or rolls and is the easiest diy insulation material.
Modern technology of blanket insulation today is considered the best insulation for attic.
Rigid foam board is just above the roof deck or an exterior insulation option.
This type of insulation.