The Awlgrip information I have seen recommends NOT rolling and tipping. Awlgrip suggests spraying by a professional, using positive pressure air filter masks for the painter(s), the last time I looked. Interlux Interthane 2-part polyurethane IS applied by amateurs using a roller and brush. I did our decks and got good results. Single-part paints do not seem to hold up well in this application. Our decks have looked good for four years, and are now due for some touch-up due to chafed areas.