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Insulation is any material used to slow the transmission of heat or reduce the transmission of sound. Typical materials include fiberglass, foam, blown cellulose, and reflective foil. This should not be confused with weather stripping.

4 votes

Do I need an air space between insulation and flooring in the attic?

There is no reason to remove your old insulation, unless it does not contain a vapor barrier (in which case, you can put it over the new insulation). … In order to get the suggested amount of attic insulation, you will need insulation more than 3.5" thick. …
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1 vote

What type of insulation has the highest R value per inch?

Likely the best insulator that you could use would be a vacuum. You can purchase "vacuum insulating panels", but they will be difficult to install, expensive, and might end up being too thick. The pan …
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8 votes

Is styrofoam good for attic insulation?

You then put insulation at the floor of the attic. … This corning page containing a table of recommended insulation values. …
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10 votes
14 answers
101k views

Can I install cellulose insulation without a blower machine?

I've purchased a few bags of loose fill cellulose insulation from the local hardware store (GreenFiber brand). … How will the insulation work if I don't put it through the machine to fluff it and force it through a tube? …
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4 votes

How can I insulate my attic on a tight budget?

Keep insulation away from them. Hot insulation can catch on fire. The third thing to do, if money is available, is to buy the cheapest (per R value) insulation that you can. … Then, spread as much loose-fill insulation as you can afford, or lay some batts of insulation perpendicular to the already installed batts. …
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5 votes

Is a thick, unvented hot roof a good candidate for spray foam?

and filling the walls with blown insulation or faced batts (with the paper against the drywall). … This would likely be much cheaper than foam insulation, but not insulate as wall. Insects (such as ants and termites) can tunnel through foam insulation. …
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