ok im getting ready to put some sound deadener mat on my car, my question is after i put it on can i put the liquid edead stuff over it or should i put it on first i heard to put it in first then lay the mat then u can put it on again to frezze the mat (not really sure what that means) also the other question is when i buy the liquid stuff how do u put it on?? i heard u put it on wit like a paint brush can u put it in a paint gun and spray it thanks