You can spray it, needs to be thinned no more than 10% with the POR 15 thinner (also used for cleanup). You spray just like you would with regular paint. Use caution, as it will run like crazy if you go too heavy. And a high quality charcoal filter, or better yet, a fresh air, respirator is a musst when spraing this stuff. Even if just doing a small area without a mask will make you very sick! Don't ask how i know this.