I put this stuff down in my coop over 4yrs ago, and it still looks like it did the day after it was first done. In my coop, it has been through all kinds of weather, from the low single digits in winter, to over 100F in the summer. The BIG thing with this stuff, is to StirWell. After that, it doesn't matter how you apply it. I just dumped a big puddle on the floor, and used a paint roller on a stick to push it around to where I wanted it. I'd think that's the easiest method. I put down one thick heavy coat, ,making sure it filled the gap where the wall framing met the floor. I wouldn't apply it to the walls, I want the coop bright and airy, not like a dungeon, and black paint on the walls does not help with that. After it's dry, it's never tacky, no matter what kind of weather you get. There are NO cons to this product when used as a wood floor protector in a chicken coop. I've read reviews where some people have complained that it didn't last on a roof, but I would bet that was because the complainer did not StirWell.