Interior Wall Retrofit
Can I have insulation installed from the inside of my existing home?
Yes! In many cases, the exterior of the home is not accessible from the outside such as a brick or stone home, in those cases an interior retrofit is needed.
At ThermaSphere we do not endorse exterior wall retrofit if it is through brick. Because we don’t believe that an adequate job is being done. If there is a 4” brick and a 1” space between the brick and wall sheathing, then the wall sheathing needs to be penetrated and there is no way to insert a tube up the wall cavity to ensure the product reaches adequately.
This means that the wall insulation must be an interior retrofit to ensure that the walls receive a dense pack of cellulose at 3.5 pounds per square foot. 3.5 pounds per square foot is required to stop air infiltration and to prevent the insulation from settling.
Our 5 Step Process
Step 1. Protect your property
First, we move everything at least 4 feet away from the walls. Then we install drop cloths throughout the house to protect the floors. Then we install plastic walls to create 4-foot corridors
Step 2. Drill Holes
We drill 3 inch holes into each wall cavity through the drywall.
Step 3. Fill the Wall
A tube is inserted into the wall and cellulose is dense packed into each wall cavity.
Step 4. Repair the Drywall
Each hole is cleaned with a razor blade to ensure there are no burrs protruding out from the wall. We then insert a foam plug into the hole and recess it about 1/16 of an inch. Last, we use 2 coats of 5-minute mud to mud the hole. All that is required from the customer after that is to do a light sand and touch up paint.
After we are finished the plastic walls are removed, the drop clothes are collected, and the area is vacuumed and wiped down