Another thing to pay close attention to is the size of your project. We can make our tombstones with just about any good foam glue and not be concerned. But as we get larger full-sized mausoleums, the need for the glue to hold fast in all types of weather, and to hold up to additional weight and construction needs, becomes critical. It's why we keep experimenting every time a new glue comes out to see what works best for us. As for paint, we get it free from Craigslist, so we can't exactly buy just one brand when we think we've found one we like. But we can at least say we don't need to buy Drylok. It's great stuff if you have the budget for it, but it doesn't seem to hold up or protect any better than our free paint.Please, for the love of all that is Halloween related, please test this stuff out in a smaller scale & sooner rather than later so you're not trying to get it ALL done on the big night.
Not that any of us would know anything about that sort of thing.