Cotton Batts (Blue Jean)
Cotton insulation is increasing in popularity as an environmentally preferable option for insulation. It has an R-value of around 3.7 (RSI-0.65), equivalent to the median value for fiberglass batts. The cotton is primarily recycled industrial scrap, providing a sustainability benefit. The batts do not use the toxic formaldehyde backing found in fiberglass, and the manufacture is nowhere near as energy intensive as the mining and production process required for fiberglass. Boric acid is used as a flame retardant. A small quantity of polyolefin is melted as an adhesive to bind the product together (and is preferable to formaldehyde adhesives). Installation is similar to fiberglass, without the need for a respirator but requiring some additional time to cut the material. As with any batt insulation, proper installation is important to ensure high energy efficiency.
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Famous quotes containing the word cotton:
“We are constituted a good deal like chickens, which, taken from the hen, and put in a basket of cotton in the chimney-corner, will often peep till they die, nevertheless; but if you put in a book, or anything heavy, which will press down the cotton, and feel like the hen, they go to sleep directly.”
—Henry David Thoreau (1817–1862)