Diy blown in insulation walls. Blown in insulation overview. Insulation in house exterior walls is one of the primary defenses against heat and energy loss. Dry cellulose insulation is made from recycled shredded newspaper which has been chemically treated to be fire resistant.
The pros charge 1500 to 2000 to do a 1200 sq ft. Adding insulation to a wall is a bit more difficult than adding it to an attic because in a wall the insulation is hidden between the interior and exterior wallcoverings. Blow in or blown in insulation installed to a house with existing sheet rock walls.
Foam insulation is probably the best retrofit choice in terms of avoiding wall damage. How much does attic insulation cost. You can put it in your walls attic crawl space and even under the floors.
We hired out the work to be done but this video serves as a guide to how to do it your self. It simply is blown in to the depth required to meet the r value specified by local code. If you need to add insulation in your attic save big by blowing in cellulose insulation yourself.
A how to on installing certainteeds optima blown in fiber glass insulation into interior and sidewall applications including application techniques and quality control. You can put it in your walls attic crawl space and even under the floors. Removing the wallcovering to insulate the wall cavity just isnt cost effective.
Unfortunately however builders didnt insulate the walls of most homes built before the 1980s. From blown in insulation to foam these are the best ways to insulate closed walls. You can use fiberglass or cellulose.
Professional injection foam installation is best but several manufacturers offer moderately expensive do it yourself kits. This is a project the average do it yourself person can do.