wanted to let you guys know the lizardskin will brush on great... self levels to leave a uniform finish. to spray it (heat or sound) you WILL need there spray gun or just a undercoating gun will work fine. I just used it on my 39 chevy coupe I am just finishing. will never go back to glue or stick on heat & sound deadener again. I used it as a undercoating ( heat)on the bottom of the floors, runningboards, fenders,. then on the inside of the car I sprayed the (heat) on the firewall ,and roof. after that I sprayed the sound over the intire insided. the car is quiet!! and best of all there is no heat coming in the car!!!!! which says alot , I a running a 454 bbc & the headers & exhuast are very close to the floor panels. it is worth the extra $$$$