About Foam Insulation
New Foam Insulation Articles from http://www.fomofoam.com about Foam Insulation, and Crawlspace Insulation.
But venting makes it easier for cold air to infiltrate batt insulation, which reduces its effective r-value. Ceiling penetrations like recessed lights are also common sources of air leakage. Cold roofs and foam. One way to deal with these sorts of troublesome leaks is to fill the ceiling with spray foam.
Foam InsulationThe nonexpanding kind is good for filling narrow cracks. A blanket over the hot-water heater can save plenty (your electric utility company may install it free). I packed shreds of insulation loosely into odd spaces at the ceiling and floor so that the cavities would not leak heat. Those derived from mineral resources include rock wool, vermiculite granules, perlite, fiberglass and foam glass. On the negative side, fiberglass blankets do not seal wall and ceiling cavities very tightly, and unless installers use encapsulated batts, a vapor barrier is required to protect the insulation from moisture. During the 70s, when petroleum threatened to rise to $50/bbl (it now sells for about $18), a number of door/window-insulating ideas were developed - not all of them practical. Some rigid foam products are ideally suited for foundation insulation because they are water resistant and can be buried in the ground on a foundations exterior. |
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