An excellent roofing company. I have a flat tar and gravel roof. On one occasion, Stop Leak replaced the entire roof at a reasonaable price. The job was well done and completed in only one day. On another occasion, after I had 7 roof penetrations make to install new HVAC units, I hired Stop Leak to fix the leaks created by the mechanical contractor to install new vents.. The mechanical contractor had been unable to fix the leaks afte several tries, and I finally decided that the mechanical contractor was unable to the leaks even though it was his responsibility. Stop Leak estimated the repair at $600 plus tax for all 7 leaks. After completing the work, Stop Leak only charged me $550 since it did not take as much time as they had originally estimated. Stop leak is my only Roofing Contractor from now on. I recommend them highly.