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.
It typically has 3 variations.
It s available in fiberglass mineral wool plastic fibers and natural fibers.
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.
Rolls and batts are produced of mineral wool and fiberglass.
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.
One that i like a lot since i built a house out of them is the structural insulated panel.
Better materials for attic roof insulation are rigid foam boards and spray foam insulation.
Loose fill or batt the common term for blanket insulation.
The later is used in new construction as the interior board serves as an inner wall.
There are other materials and systems that you can use to insulate your attic.
For diy attic insulation you ve got two choices.
Modern technology of blanket insulation today is considered the best insulation for attic.
Bare foam board one sided sheathing board or double sided which is also reference as structural insulated panels.
This type of insulation.
It s a sandwich of rigid foam insulation and plywood or osb oriented strand board the flaky plywood.