We have the unique ability to insulate an exisiting wall cavity that already has inslation in the wall without tearing apart the wall or removing the old insulation. Our Retro Fit Injection foam can save you up to 50% on your energy bills! We do not drill through the siding to inject we remove a piece of siding first then create the injection port and pump in the safest injection foam on the market. We use TRIPOLYMER injection foam. A non-formaldehyde, safe, non toxic, and non swelling foam. With Tripolymer you get a fire proof material, non-molding, and a reduction of 80% of noise transmission.