Cellulose insulation can be installed in a variety of applications. As with all fibrous insulation materials, it is critically important that air-sealing take place prior to insulation installation.

Common air-leakage locations can be seen here, in this illustration. Click the diagram for a larger view. For additional information on air-leakage, visit the Building Science Basics section of the Greening Your Home section.

Prior to installing additional insulation in your attic space, air-sealing should be performed first. By air-sealing the ceiling boundary, air leakage into the attic is eliminated, saving you money while maintaining a comfortable living environment.

If this air-sealing step is skipped, warm air will continue to escape from your house, passing through the fibrous insulation.

New Walls - Net & Spray

When we install cellulose in walls of a new construction project, we first install a net, then densely pack the insulation behind the net. By taking this approach, we use less than 1% of the moisture typically used in the "wet spray" method.

This netting also holds the cellulose in the wall cavities. In wet-spray installations, it is common to see cellulose that has fallen out of the wall cavities due to other trades (i.e. siding) banging on the walls. This often results in cavities that are poorly insulated, or lack insulation completely!

Existing Wall Dense-pack

In exisitng walls, we can fill wall cavities with cellulose by accessing the cavities with holes, either on the interior or exterior. A tube is inserted into the cavity, and cellulose is pumped into the cavity, filling it completely. By filling the wall cavities with cellulose, we can reduce the flow of heat throught this wall by over 1000%, making your home much more comfortable and efficient.