I had nothing but problems with this stuff. I was using the long tube on the nozzle and it would occasionally spray out from the nozzle making a big mess. If you paused for more than a minute, the tube would clog up and the spray would either stop or leak out the nozzle. I have several large 1-1/2” dia access holes in my frame. I taped them over and used the spray. When I took the tape off, there was no spray on the inside of any of them beside what looked like a tiny bit of overstay. Also, out of three cans, I didn't get to completely empty any of them because the cans would stop spraying. I assume they were getting plugged. Bottom line, I would not buy this product again.