Koos Seal Is Another Product. Wash Roof Down Using A Liquid Dishwashing Soap. Let Dry, If It A Little Damp It Wont Matter, Because The Products Are Latex Based. To Start The First Process. It Has Two Parts Sold In 1-gallons, And 5-gallon. First Use The Patching (thick Stuff) To Go Around Flashings, That Go Thru The Roof Such As Soil Pipes, And Around Edges. Use A 6-inch Wide Cheap Paint Brush. If There Is Visible Cracks, They Have A 4-inch Wide Fiber Material With Small Open Squares. Cut A Piece To The Length You Need, And Press In Into The Patching Material Using The Paint Brush. Let The First Coat Dry Overnight. Wash Paint Brush With Plain Tap Water Out Of The Faucet. Second Step Is To Apply The Seal Coat, (liquid) As Thick Paint. Use A 12-inch Wide Cheap Roller, Pour Some Out On Roof, And Just Rool It Out. Have A Ladder At The Place You Want To Get Off Roof. Because The Material Is White, It Will Help Cut Down On Electric Bill For Air Conditioning In Summer. Kool Seal Is The Rubber Material Found On Concrete Around Swimming Pools. Is Feels Like Rubber To Walk On Barefoot, And Is Cool On The Feet, And Comes In Different Colors For Around Pools. Kool Seal Can Be Found At Lowes, And Lumber Yards. It Will Last For Several Years Before You Need To Do It Again. This Process It A Lot Cheeper Than A Roof Over.