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Learn about Cotton Batt Insulation

Cotton Batt Insulation

Insulation made from recycled clothing, such as denim jeans, which give these insulation batts their distinctive blue colour. Typically 85% of the content is recycled material. It's made for insulating cavities such as stud walls, attics, and floor joists.

R-value measures the insulating ability of materials. The thicker the insulation, the higher the R-value. Cotton batt typically has an R-value of about 3.5 per inch, so a 2x6 (5 and a half inch) layer gives you R19. Choose the right size and thickness to fit your stud or joist space so that the insulation fits snugly but does not get compressed.

By using waste products, recycled cotton insulation provides a market for recycling and an incentive to keep these materials out of landfill. It also takes less energy to produce than many other forms of insulation. It's formaldehyde-free, uses non-toxic fire retardants, and its insulation value is comparable with fibreglass or cellulose. 'Blue jean' insulation is also very easy to work with yourself and isn't itchy.

In the United States, 13 million tons of clothing are dumped in landfills each year. If that could all be turned into insulation, it would insulate the attics of over 13,000 modest homes per year, to R40 level.