AR350 was extremely easy to work with. I needed to seal a floor in my poured concrete basement. I simply rolled it on using roller with an extendable handle. It has low viscosity so it rolls on basically like water. After checking on it once curing was complete I was very satisfied by the glossy appearance of the newly sealed basement floor. It looks slightly darker than the unsealed portion, exactly as advertised. I found that one gallon went pretty far. I was able to seal (two coats) my 350 sq ft floor using about 1.5 gallons.