Cellulose Insulation: Choose This Green Option Carefully

Cellulose insulation is made from recycled newspaper that has been treated with either sodium borate, boric acid, or ammonium sulfate. These chemicals are required to make the cellulose insulation fire resistant and also to repel rodents, mold and insects.
Cellulose insulation can still be flammable and we don’t have long-term results from studies regarding the chemical mixes that are applied. Cellulose insulation is also more expensive and can sag after it is installed but the spray-on insulation is easy and it is definitely a better choice than fiberglass.
The R-Value of cellulose insulation is high at around 3.7.

For more information about cellulose insulation check out CIMA – Cellulose Insulation Manufacturers Association but be aware that CIMA is not an independent website.

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Timothy Dahl

Timothy Dahl

Founder/EIC at Charles & Hudson
Timothy’s background includes stints at This Old House, ELLE DECOR, Metropolitan Home and Woman’s Day. His work has been published on Wired Design, Bob Vila, DIY Network, The Family Handyman and Popular Mechanics and he has been featured on the Martha Stewart radio show and as a speaker at the ALT Design Summit, K/BIS and the National Hardware Show.