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Algae Armorโ„ข

Is your home in a humid or wet area? Algae thrive in environments with high levels of moisture. Some algae can cause unattractive black streaks to grow on a roof over time, which can alter the color of your roof and make it look older than it is. To ensure that the roof installed today preserves it beauty, choose a roofing shingle that defends against algae.



No shingle color hides unsightly black streaks.

BOTH LIGHT AND DARK COLORED ROOFS SHOW DISCOLORATION FROM ALGAE - No shingle color hides unsightly black streaks.


Algae Map

Streak Resist Technology

Streak Resist™ Technology

Shingles with a blend of copper roofing granules resist algae growth and help maintain the aesthetic appearance of your roof. The copper roofing granules are designed to slowly release copper ions which resist algae growth and prevent black streaks from appearing on the roofing shingles. The copper ions gradually disperse over an extended period, depending on the concentration of the granules in the shingle. Therefore, Malarkey offers 5, 10 and 12 years of protection against algae with Streak Resist™ roofing shingles.

Malarkey shingles available with Streak Resist™ Technology

Architectural Shingles:

Vista ARHighlander NEX AR

3-Tab Shingle:

Dura-Seal AR

Other levels of algae protection are available.


*Malarkey hip and ridge shingles (10", 12" RidgeFlex™ or 8", 10" EZ-Ridge™ with Scotchgard™ Protector from 3M) are recommended for all Malarkey field shingles but required with shingles having Scotchgard™ Protector to receive Malarkey’s Limited Lifetime Scotchgard™ Protector Warranty. Some contractors adapt 3-tab roofing shingles to use as hip and ridge shingles; The Alaskan® featuring Scotchgard™ Protector can be substituted as hip and ridge shingles for both the Scotchgard™ Protector Warranty and the Algae Resistant System Warranty from Malarkey. The use of Dura-Seal™ AR as hip and ridge shingles is only allowed when Dura-Seal™ AR is the field shingle. Scotchgard and the Scotchgard Protector Logo, including the 3M logo, are all trademarks of 3M.

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