Roof inspection with low slope shingles reveals many possible issues that cause roof leaks.
Shingles roofs are not meant to cover low slope of flat roof sections. A low slope roof is considered 2:12 or less. This roof is a 1:12 slope. Shingles are not a material we recommend for this low of a sloped roof. Leaks can occur because the water does not drain off of the roof fast enough.
This area should be step flashed. Also, it appears to have some nail pops and possibly an issue with slope at the transition.
In this photo, you can see a step flashing around the chimney. This appears to be functional and intact.
In this photo, you can see that the surrounding trees have branches that come into contact with the shingles. These should be trimmed back to prevent damage.
Here, you can see that moss and buildup on the low slope portion under the deck. It would be suggested to replace this portion of the roof with a commercial membrane or coating. The asphalt in this section appears to have some minor leaks. Service to this area will likely require removal of a portion if not all of the deck
Here, you can see the water has infiltrated the roof beneath the deck. It is unclear if these are old stains or new, but likely active upon inspecting the roofing underneath.
