We had a flat orangery roof built 3 years ago by a building company that stood deep in water whenever it rained and was starting to leak. I called Leigh and explained the problem and he came to visit giving me options on repairs or replacements and cost implications of each option. We decided to build a new roof and the work Leigh and all his staff did was excellent. Since the new roof was built by Rooftek Advance we have had rain and there is no standing water! I cannot recommend Rooftek Advance highly enough.