If you have moss growing on the shady part of your shingled roof, you may believe it is just an ugly eyesore. However, there are three reasons why the moss is much more than a mark against the appearance of your home.
Moss Retains Moisture
One of the reasons that moss starts growing on the shady areas of your roof is because the shingles stay wet longer without direct sunlight to dry them out. If the moss was not growing on the shingles, they would eventually dry out.
However, since moss retains moisture to keep itself healthy, it also keeps your shingles wet. Because your roof under the moss never completely dries out, the water may eventually break down the asphalt material from which the shingles are constructed.
If you go up on your roof and lift up the moss, you will most likely see water even if it has not rained for a few days. You may also see areas where the surface of the shingles has started to deteriorate.
Roots Penetrate the Shingles
Water retention is not the only danger caused by moss growing on your roof. Just like most plants, the moss must sprout roots in order to absorb water and nutrients.
Because there is no soil on your roof, the roots from the moss grow directly into your shingles. As the roots grow deeper on dry days in an attempt to find moisture, they could crack the material and break the shingles apart. When you are lifting the moss to check for water, you will see how the roots cling to the shingles.
Moss Growth May Be a Sign of Water Leak
When examining your roof for moss damage, look to see from where it is growing. If you see any moss growing out from under your shingles, this could represent a major issue with your roof.
If the moss is able to thrive under your shingles, this means that water has most likely started leaking underneath them. It may have also started penetrating the plywood structure under the shingles. Eventually, if the problem is not addressed by a professional roofing contractor, the water will rot through the wood and lead to a leak inside your home.
If you have a large amount of moss growing on your roof, there may be hidden damage to the shingles that needs professional evaluation. Contact a roofing contractor so they can inspect your roof and determine whether these areas can be repaired or your entire roof needs replacing.Share
11 July 2017
I was concerned that a recent hailstorm might have caused damage to my roof. While inspecting my roof, the roofing contractor noted cracked shingles and granule loss from the impact of the hailstones. I didn't want my roof to start leaking, so I immediately had the damaged shingles replaced. Hi, my name is Troy Blakely and in this blog, you'll find out about the various types of shingle damage. You'll also learn how to determine if you need to have your roof repaired or replaced. I didn't know this information until the roofing contractor explained it to me. Then I decided that I would help other people by spreading the word. A damaged or leaky roof can cause expensive damage to the inside of your home and that's why it's so important to address roof issues as quickly as possible.