Did you apply the raptor liner with a roller, brush, or paint gun ? Thanks for the tip. Dan C.Not sure if this helps you. I applied raptor liner to the inside of my cab. At first I started to sand the carc. I realized that all I was doing was removing the rough texture that would help adhere the Raptor liner. I pressure washed first. Then addressed any peeling paint. Next I wiped it down with acetone. Turned out very nice.