The truth is a 30 year shingle will not really last 30 years.
Roof shingles anti mold.
The expected service life of a 30 year product if properly cared for is approximately 25 years.
We ve been around since 1984.
If you ve had experience with mold and mildew in the home you know the best mildew remover is chlorine bleach.
Extensive mold growth can also expose the interior of your attic or crawlspace to mold spores carrying the problem over to the inside.
Zincshield zinc strips liquidzinc chemical stop prevent roof stains from algae fungus mold moss lichen mildew on asphalt wood flat tile roofs.
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Avoid expensive roof cleaning repair.
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By this old house tom silva installs a zinc strip to keep roof algae from coming back.
The premade ones are much quicker and probably neater looking.
The natural action of rain water time releases zinc carbonate a proven fungistat which then washes down the roof preventing destructive roof moss algae and fungus growth.
Sponsors 2 responses to roof shingles with copper algae resistant.
Chemically treated roof shingles are available from several asphalt roofing manufacturers who offer these products which are resistant to moss lichens or algae growth on roofs.
Mold stains can form on roof shingles that are in permanent shade.
I urge you to use it to help with cleaning your roof shingles.
Not to worry though because you can clean the mold off with basic household bleach and save your roof long before you need an expensive replacement.
Discuss this option with your roofer when it s time to replace the roof.
These stains will discolor your roof and damage the shingles over a period of time if left alone.
The best way to prevent this unsightly problem is by installing streakfighter algae resistant shingles.
You can cut strips of zinc flashing copper and lead work too and slide them under a course of roof shingles to kill lichen and moss growing there or you could just buy these premade strips from shingle shield.
Use algae resistant shingles when re roofing.
The black mold like stains and streaks that appear on roofs particularly light colored asphalt shingles is actually a blue green algae.
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You will be amazed at the results.
It works with any wood or composition roof.
That s one of the big misconceptions in the roofing marketplace.
Moss lichens algae resistant roof shingles.
If it s not cared for properly that 30 year shingle will only last 12 to 15 years.