I have no hesitation in recommending Ivan. He recently replaced our 3 skylights and resolved some long term complex flashing problems on a fairly flat roof. He was always polite and courteous and explained what he thought was the best solution. He will give you a realistic and experienced appraisal and go out of his way to hopefully ensure a long term fix. Honest and trustworthy; after we had accepted his quote he even revised it to pass the savings on to us when he was able to source a cheaper skylight manufacturer.