In the residential roofing marketplace, the vertical interruptions that are the most troublesome are those of the chimney flashing details.
These areas are the number one service call request in the industry. They are usually addressed with asphalt cement or caulk by the novices in the trade which usually leak in the first 3 to 5 years of service.
By the time a leak is discovered on the interior of the structure, major damage may have occurred, and the contractor is more than often, out of the business. We get many calls related to inadequate chimney flashings. Word to the wise: It costs less to do it right, even if it costs a little more….
Roofing Doctor Never Mixes Metals.