If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary.
Best attic insulation for south virginia hvac in attic.
Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
Paul s heating air conditioning.
After all it s hard to get cold air from a warm pipe.
Loose fill or batt the common term for blanket insulation.
I d blow insulation on the attic floor after air sealing of course.
For diy attic insulation you ve got two choices.
It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass.
Our heating and ac ducts are 100 within the thermal envelope in the floor trusses above our insulated basement.
No offense to the northerners but you yankee s generally have a full in ground basement to run your hvac systems and very few attics in the north have ductwork.
Buildings that suck ducts in attics crawlspaces etc 8.
But our erv ducts stand alone system not tied in w heat pump and 2 jumper ducts for pressure balancing from bedrooms are suspended above the insulation in our vented attic.
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For hvac duct systems located in the attic sealing and insulating the attic with spray foam insulation is the only way to protect the system from the extreme temperatures we live with here in metro atlanta.
In the south we are mostly slab on grade concrete foundations or crawl space s with pier beam foundations.
Best attic insulation for the south matt risinger.
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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.
My definition of an unvented attic is an attic where there are no vents and where the attic insulation.
Vented attics and vented crawlspaces.
Both can be added to uninsulated attics or layered over existing material.
This post is specifically for my friends in the southern us.
So when we have a choice we prefer hvac systems located under the house.
Modern technology of blanket insulation today is considered the best insulation for attic.
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.