Just to let you know I tried the Removall 310. The can says that it will remove paint, that you have to apply it with an airless and it will cover 40-70 sq. ft. per gallon. DON'T YOU BELIVE IT!!! I spent $1400.00 to cover 1200 sq. ft. and that's 23 sq. ft. per gallon and had to use a zero degree tip to get this crap off the house. When you call the Rep for the product it's your fault you didn't it right. Now I been painting 30 years now and have been restoreing house for quite a few years. I am told this product will work but would you really like to see your profit go down the drain. Even the contractor that told me about this product has changed to my method. I would not use this product again even if they gave it to me.