Choose from two types.
Which insulation is best for attic.
Spray foam offers the best attic insulation performance available.
Both can be added to uninsulated attics or layered over existing material.
Insulation ratings can be improved by adding more layers of insulation.
Insulation level are specified by r value.
If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary.
Stops heat loss into your attic.
Stops heat loss into your attic.
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.
Closed cell and open cell aka 2 pound and pound respectively.
Best for long unobstructed spaces like over attic joists.
The ideal attic insulation r value is different than the ideal wall insulation r value.
Available in pre cut widths to fit between studs and joists.
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Must be measured and cut to fit walls or flat surfaces.
Loose fill or batt the common term for blanket insulation.
Come in continuous lengths ranging from 20 to 40 feet.
Insulation rolls leave less opportunity for gaps between sections making them sometimes more effective than batts.
Spray foam attic insulation.
The higher the r value the better the thermal performance of the insulation.
The big disadvantage with spray foam is cost.
Glass fibers in puffy strips with or without a paper or aluminum face.
I d blow insulation on the attic floor after air sealing of course.
R value is a measure of insulation s ability to resist heat traveling through it.
For diy attic insulation you ve got two choices.
You can mix the type and material of insulation too.
Achieving greater r values in attics.
Best for unfinished walls floors ceilings and wherever long and continuous insulation pieces are needed.
Wall insulation keeps out cold.
Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer.
Modern technology of blanket insulation today is considered the best insulation for attic.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
Rolls and batts are produced of mineral wool and fiberglass.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
Make sure your home is properly insulated in all these locations.
They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively.