Moss on a shingle roof may look like a harmless patch of green, but in Northeastern Pennsylvania, it can become a real roofing problem. The combination of moisture, shade, snow, rain, and seasonal temperature changes creates ideal conditions for moss growth. If left untreated, moss can shorten the life of your shingles and contribute to roof damage.
Why Does Moss Grow on Shingle Roofs?
Moss thrives in damp, shaded areas. Roof sections underneath trees or on the north-facing side of a home often receive less sunlight, allowing moisture to remain on the shingles longer.
Leaves, pine needles, and other organic debris can make the problem worse. When debris collects on the roof, it traps moisture and creates an environment where moss can establish itself.
NEPA’s wet springs, humid summers, and snowy winters can provide plenty of moisture for moss to survive throughout the year.
How Moss Can Damage Shingles
Moss doesn’t simply sit on top of your roof. As it grows, it can work its way underneath the edges of shingles. This can cause shingles to lift, separate, or become damaged.
Moss also holds moisture against the roofing materials. Repeated wetting and drying can contribute to deterioration of the shingle surface and underlying materials.
During winter, moisture trapped around moss can freeze and expand. Combined with NEPA’s freeze-thaw cycles, this can make existing roofing problems worse.
A roof covered with moss may also hide other issues, including damaged shingles, deteriorated flashing, and areas where water is not draining properly.
Should You Power Wash Moss Off Your Roof?
Generally, homeowners should avoid power washing asphalt shingles. High-pressure water can remove protective granules from the shingles and cause unnecessary damage.
Moss should be addressed using appropriate roofing-safe methods. In some cases, the best solution may involve removing the growth carefully and correcting the moisture conditions that allowed it to develop.
It’s also important to determine why moss is growing in the first place. Trimming overhanging branches, improving sunlight exposure, and keeping gutters and roof surfaces clear of debris can help reduce future growth.
When Should You Call a Roofing Professional?
If moss is widespread, shingles are lifting, or you notice leaks or other signs of roof damage, a professional roof inspection is a smart move. Removing the visible moss without checking the condition of the shingles could leave underlying problems unnoticed.
The Roof Repair Guys provide professional roof repair services throughout Northeastern Pennsylvania. We can inspect your roof, identify damage, and recommend the appropriate repair or maintenance solution.
Don’t let a little green growth turn into a bigger roofing problem. If you notice moss on your shingle roof, contact The Roof Repair Guys at (570) 332-1223 or office@theroofrepairguys.com.