(FAQ) Roofing – Frequently Asked Questions

Every house and building has a roof—and this means questions are sure to arise. Whether you are concerned about replacing some shingles, need roofing remodeled after a storm, or have some maintenance questions, we have the answers.


Relevant:18 Questions To Ask A Roofer Before Hiring


Why does my roof get dark streaks and discoloration?

If you have had your roof for about 5 years or more, you will start to seen signs of discoloration. Dark streaks appear on the north-facing sides of roofs due to algae growth. This is particularly prominent with roofs that don’t receive a lot of direct sunlight.

There are few solutions for getting rid of these dark streaks, such as installing zinc strips that prevent algae formation. You can also power wash the roof, but you need to be careful not to cause granule loss. Hiring a professional is always a smart move.

Why does one side of the roof age faster than the other side?

Roof slopes that face south will always age the fastest and get discolored more quickly than other sides because it receives the most sun exposure.


Why is there water dripping from the roof and gutter system?

The most common cause for dripping water would be a lack of a drip edge. A drip edge is an essential part of the gutter, because it serves as a protective lip that directs the flowing water towards the eavestrough.

If your roofing system is lacking a drip edge, call a professional to have it installed as soon as possible.

What are the options available for reroofing?

There are two options: a complete replacement of the roofing system, which means removing every piece of the existing roof, or re-covering an existing roof, which involves installing only a portion of a new roof. If you already recovered once, you will need to check with a contractor about building codes and other requirements.


Can I put a new roof over an existing one?

Never install new shingles over old shingles. Not only does this void the warranty of new shingles, but the old shingles will continue to warp and cause your new roof system to be uneven and wear abnormally. Furthermore, if an old roof system isn’t removed, you won’t be able to inspect the roof for deterioration and rot.


How long do roof systems last?

The newest roof systems can last about 20 years. Some roof types, like slate and clay titles or metal systems can last even longer than that. However, the actual longevity of a roof system is dependent on factors like the local climate, environment, roof design, material quality, and if the roof receives adequate maintenance.


How can I recognize problems with my roof system?

Most of the time, the most severe issues aren’t caught until the damage is done. Check twice a year for cracked, warped, or missing shingles; uncovered sections; loose seams; and other visible signs that the roof is damaged, like finding excessive amounts of granules in gutter deposits. Leaking and water damage inside the house is also a sign that something is wrong with the roof.