Best Denim (Cotton) Insulation


Photo: interior wall denim insulation for sound, with fiberglass exterior walls.

When to use denim cotton insulation in Austin TX?

Blue jean insulation, like cellulose, has a very high level of recycled content. Some Austinites who are extremely concerned with the energy used to produce their building products will choose cotton.

The material is one of the most unforgiving types of insulation to install. The material is much more likely to have installation flaws that reduce the effectiveness of your finished project. Meaning, denim insulation may be eco-sourced, but it won’t necessarily create an eco-building for you because of ineffective insulation.

How effective is blue jean insulation on sound proofing?

The sound transmission class for denim insulation is good in a laboratory test environment. However, in actual buildings where the material sags or falls, it is not a good choice. Check out our blog on comparing sound deadening materials.

How much does cotton insulation cost?

Denim insulation is rarely used. Very few insulation supply houses carry the product. So the costs are often steep. In general you are looking at $1.70-$3.50 installed. Check out our full insulation pricing guide here.


Book your Home Performance Diagnostic Consult. OR Download the Ultimate Insulation Buyer’s Guide, OR call 512-520-0044.