Dan has responded to me quickly (next day) and efficiently every time I call. If there is a leak - he finds it and either fixes it immediately, or puts a temporary fix on it until the problem can be permanently addressed. He is the one contractor I have dealt with that I can call and have complete certainty that my problem will be quickly and effectively solved. His prices are more than competitive. Dan actually cares about his customers and it shows. If there was a ten star rating on this page, I would give it to Dan and Rooftop Services.