Originally Posted by mercury grey minter
The best stuff you can get is 3M BAG SEALER.It,s not cheap, £12 a bag and i used 15 of them to do the underside of my s2.You can paint over it aswell
this is what i wanted to do the underside of my saff, but as i am only doinf small bits, i'll use the brush on stuff as i havent got a compressor