The ideal attic insulation r value is different than the ideal wall insulation r value.
Which insulation is best for attic.
Spray foam attic insulation.
They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively.
Attic construction is the 1 rated attic insulation attic cleaning rodent proofing and rodent decontamination company in san diego and orange county ca.
You can mix the type and material of insulation too.
Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer.
Insulation ratings can be improved by adding more layers of insulation.
Attics walls and between crawlspace joists.
Stops heat loss into your attic.
Best for unfinished walls floors ceilings and wherever long and continuous insulation pieces are needed.
The big disadvantage with spray foam is cost.
Stops heat loss into your attic.
R value is a measure of insulation s ability to resist heat traveling through it.
Spray foam offers the best attic insulation performance available.
Wall insulation keeps out cold.
It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass.
Make sure your home is properly insulated in all these locations.
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.
If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary.
Best for long unobstructed spaces like over attic joists.
For diy attic insulation you ve got two choices.
Must be measured and cut to fit walls or flat surfaces.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
Closed cell and open cell aka 2 pound and pound respectively.
I d blow insulation on the attic floor after air sealing of course.
Available in pre cut widths to fit between studs and joists.
The higher the r value the better the thermal performance of the insulation.
So it s time to pay close attention to what s happening up there.
Achieving greater r values in attics.
Both can be added to uninsulated attics or layered over existing material.
Glass fibers in puffy strips with or without a paper or aluminum face.
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.
Insulation rolls leave less opportunity for gaps between sections making them sometimes more effective than batts.
Loose fill or batt the common term for blanket insulation.
Insulation level are specified by r value.
Modern technology of blanket insulation today is considered the best insulation for attic.
