Tremco was founded in 1928 to help roofing contractors do one thing: "Keep good roofs good!" OneSeal is a revolutionary new technology breakthrough. Extreme ease-of-use roof maintenance...with an equally extreme performance capability...where your first reaction is likely "This is too good to be true!"...well, if it's Tremco, it's true. If you are a roofing contractor where time is money, you want no callbacks, and you promise your customers that you are the best, OneSeal patch & repair was developed just for you. Every repair crew & truck will be better with OneSeal. The OneSeal formulation was designed specifically for commercial and industrial use only.