I used 80 mill. Fat Mat. Works very well with 3 layers. I cleaned all areas with Dawn Soap to get as much grease and grime and dirt up, then used alcohol 91% for the final Prep stage.Used a box Knife and deff.used gloves, that stuff doesnt look like it, but can be razor sharp.Put 1stlayer on and rolled it.Didnt look like it was going to stick very well, So, i used a heat gun just to warm it up and hit with roller and Stuck pretty solid.Did save for Dynamat and some from Vertex Audio when they were around,Deff the way to go to heat up and make it stick, dont melt itbut get it warmed up and rollit.has worked great. Ive never experienced any bad fumes or smells from using fat Mat and Im in TX where inside vehicle temps can reach over 120*I like kilmat, fatmat, 66mat, whatever it was. I have like 4 layers on my roof and rear wall, and only spent like $200, tops. Even did my entire rear doors with 2 layers. Sounds like a damn $50k coffin when I close my doors, just sayin
Didnt look like it was going to stick very well, So, i used a heat gun just to warm it up and hit with roller and Stuck pretty solid.