I got a flat roof off this company 18 months ago and I wasn't assured that it would lastb30 year plus with no problems. Well the water is already coming through like a waterfall. I got in touch and told him I needed it fixed and he told me there's nothing he can do about it. A very very arrpgann man with no consideration or care for the work he does. I'm now left with a leaking roof, damp plaster and a foist smell all over my house all thanks to this joker of a tradesman. Davison roofing and guttering...DO NOT USE!!!!!!