We are a privately held company in Broomfield, CO.

We air seal the the top plates, chases, wire penetrations, junction boxes, bath fans, and tin and heat caulk furnace flues. Then we place rulers and baffles for quality control. We use fire stop foam and fire stop caulk for this. We will not use the white foam on walls because of flammability issues (without any wind outside you could have a 10 mile an hour convection current of air moving up and down the walls.) What is prone to happen is the hot air from the attic in the summer goes down the w...

We air seal the the top plates, chases, wire penetrations, junction boxes, bath fans, and tin and heat caulk furnace flues. Then we place rulers and baffles for quality control. We use fire stop foam and fire stop caulk for this. We will not use the white foam on walls because of flammability issues (without any wind outside you could have a 10 mile an hour convection current of air moving up and down the walls.) What is prone to happen is the hot air from the attic in the summer goes down the walls and heats up the house from the inside out. Then the cold air from the attic in the winter goes down the walls and cools the house from the inside out. By properly air sealing your home with the correct insulation practices at the top plates, you can stop this waste of energy.