Cellulose Part 1 - R-Value
In The Energy Guy's World, cellulose is by far the best insulation for the money - when installed correctly. The other insulation materials - fiberglass and foam - will be discussed in future writings. They too have good characteristics and uses. However, for now - it's Cellulose. The majority of the facts to follow come from the Cellulose Insulation Manufacturers Association. I have removed any bias facts that can be twisted to make the cellulose sound Superhuman.
Cellulose insulation is recycled paper products - recycled postconsumer waste. Fire retardants are applied during the manufacturing process to insure fire safety.
R-Value: The R-factor of cellulose is approximately 3.8 per inch and it does not vary significantly over a wide range of densities. Cellulose insulation maintains R-value under cold conditions. At an attic temperature of 20 degrees F below zero, the R-value of cellulose insulation is HIGHER than at 70 degrees above zero.
Next Topic: Cellulose Part 2 - Air Infiltration
2 comments:
how do you get that guy at the top of your screen it is so cool!!!
Yes, but even with a mask, it's sneezy (masks never fit perfectly), gets in the eyes, and it's a bit messy. I wonder if there isn't some way to give it a static charge as it comes out of the flexible hose, and charge the attic surface the opposite way so it gets attracted to the attic cavities, along the lines of spray painting autos now.. Also, it would be nice if it came in roll-out form somehow.. maybe this is available?
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