Hey, I'm planning to build a wooden enclosure and I've read that when your using drylock it's best to put one layer on really thin and then use 2 more coats or so to really seal it in or it'll flake and peel. I was wondering....if I prime the wood first would I still have to do so many coats or just 1-2 really nice ones. I'm also wondering how many gallons I would need to do an enclosure 8'longx4'widex4'high, coating the inside only. Any advice would be welcome. Thanks