What You Need to Know About Cellulose
You may be considering cellulose insulation vs fiberglass or other types of insulation. There are two types of cellulose materials. Blown cellulose insulation is a dry fiber that’s blown into enclosed cavities and open attics, while spray cellulose insulation is dampened and sprayed into open wall cavities. Both types of insulation offer an R-value of around 3.5 per inch.
As with other types of materials, there are cellulose insulation pros and cons. Benefits of cellulose include:
- Affordability. It is cheaper than spray foam insulation.
- Soundproofing. When packed more densely than fiberglass, cellulose is a superior sound barrier.
- Energy efficiency. Cellulose can reduce heating and cooling bills by around one-third.
- Fire-resistance. Cellulose is treated with a chemical called borate, which is a flame retardant.
On the downside, it is important to note that cellulose insulation can cost more than fiberglass. In addition, the R-value of blown-in cellulose will reduce over time as the material sags and settles. Cellulose also absorbs moisture easily so it can be prone to rot and mold.
