Posted on: 17 April 2020
If the trees in your yard have matured to the point that your roof is always in the shade, you may be having trouble with algae on your asphalt shingles. Algae causes black streaks on your roof that make your roof look unattractive and may even decrease the value of your home. Algae doesn't harm asphalt roofing, but you probably wish it was gone so your roof wasn't so ugly. When it's time for a new roof, talk to your roofer about algae-resistant shingles. Here's how they can keep black streaks off your roof.
The Shingles Have Copper Granules
Copper kills algae, so when your roof is covered in shingles with copper granules, your entire roof is protected from algae growth. Asphalt shingles normally have granules added to protect the roof from UV rays.
However, normal asphalt shingles don't have copper granules added to them. If you want the protection of copper for your roof, be sure to ask your roofing contractor about algae-resistant shingles that have copper added.
The Granules Provide Even Protection
Copper strips are sometimes used for stopping algae growth on roofs too. However, these depend on rain to wash over the copper strips and then over the shingles below. They are only effective when it rains, and they only work on shingles directly below the strips.
For full coverage, you need several copper strips along your roof, and you may not like the way that looks. Plus, the strips may not provide even coverage, and that causes black streaks on your roof. Copper granules ensure every shingle is protected, and the granules aren't noticeable. Algae-resistant shingles look just like any other asphalt shingles.
The Shingles Should Have A Guarantee Against Algae
When you talk to your roofing contractor about algae-resistant shingles, ask about the guarantee and warranty. Manufacturers have different terms, but your new roof should come with a certain number of years of protection.
If algae grows on your roof during that time, the shingle manufacturer may pay to have the algae removed. Your roofer can help you understand the coverage that comes with your new roof.
The Shingles Are Good Protection For A Shady Roof
If your trees are just now reaching maturity, you may be dealing with algae problems for years to come if you don't have algae-resistant shingles installed. An alternative is to have the trees removed since algae doesn't grow very well on roofing that's in full sun most of the day. However, even if there are no trees on the east side of your home, algae may still grow since the east side of the roof doesn't get much sun.
Algae can blow over from a neighbor's yard, so it's always a constant threat, especially in warm, humid weather. When your roof has algae-resistant shingles, you won't have to worry about the black growth covering your roof and making it look worn out and ugly.
Contact a company like Indy Roof Company for more information.Share