When it comes to removing spray foam roof insulation, a good first step is to locate the source. If you have a leak, this is the best place to start. Once you have located the source, you should start digging. Before you dig, you should check the underground utilities, as this will help ensure that the area is safe. After you have uncovered the leak, you should use a reciprocating saw to cut through the wall. However, be careful not to cut the wall at a 90-degree angle, or you will ruin the entire wall.
Removing Spray Foam
After you have located the source of the leak, you can begin the process of removing the spray foam. If you are using a sander to remove the old material, it is best to use WD-40, as it will dissolve the cured material. If you’re not sure how to use WD-40, you can also use Goof Off to dissolve the material. Make sure you use gloves and follow all safety guidelines.
When you’ve located the source of the leak, you can proceed with the removal. Initially, you should carefully scrape off the foam with a stiff brush, and then wash it off with warm water and a gentle detergent. If you find that a certain section of the roof has been sprayed with polyurethane, you should use a more aggressive treatment. If you’re dealing with a particularly difficult spot, you can try tunneling through the cured foam using a reciprocating saw. Remember to always read the directions before using the tool to prevent damage.