Both can be added to uninsulated attics or layered over existing material.
Best insulation for attic 2017.
Spray foam attic insulation spray foam offers the best attic insulation performance available.
Choose from two types.
The big disadvantage with spray foam is cost.
They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively.
January 17 2017 at 9 00 am est.
Closed cell and open cell aka 2 pound and pound respectively.
It s available in fiberglass mineral wool plastic fibers and natural fibers.
Loose fill or batt the common term for blanket insulation.
There are other materials and systems that you can use to insulate your attic.
Using washington as an example the energy code requires a minimum r value of 49 for attic insulation but more can be added if desired.
Modern technology of blanket insulation today is considered the best insulation for attic.
Rolls and batts are produced of mineral wool and fiberglass.
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.
Having insulated hundreds of homes throughout the northwest crawl pros has learned that blown in cellulose insulation provides the most protection and energy efficiency.
For diy attic insulation you ve got two choices.
They usually come packaged in rolls and.
It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass.
The most common type of insulation batts and blankets are great for diy projects.
Foam is the only insulation material that allows you to expand your building envelope to your attic s roofline.
This type of insulation.
Crawl pros recommends blown in cellulose as the best attic insulation for your home.
Which type of insulation is best for.
I d blow insulation on the attic floor after air sealing of course.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
This is a particularly clutch option if your hvac system heating ventilation and air conditioning for the layman is located on the floor.
Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.