651-212-4221
75% Off Installation Labor on GAF Asphalt Shingles, LeafGuard® Gutters, Infinity® from Marvin Windows.  No Payments Or Interest Until April 2023. We are also offering a free heat map analysis with insulation estimates through January 31st, 2022.
Jul 22, 2013
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FAQ’s About Algae Growth on Your Roof

Algae spores are transported through the air.  When they land on a surface, such as your roof, they cling to it and commerce growth.  Oftentimes algae & moss are not evident on your roof until it starts to decay.  In order for your roof to last as long as possible, it’s vital that you address the algae growth as soon as you’re able to prevent it from spreading.

What Does it Look Like? Algae on your roof can have a black tint; causing your roof to be stained or streaked.  It can also look like green and white splotches.  When you have a “stained” look on your shingles, it means that the algae is decaying and has nearly completed its life cycle.

Why Should I Care? Besides the obvious eyesore that algae & moss can create, ignoring the problem can cause algae & moss to spread.  The growth of algae & moss on your shingles can shorten the lifespan of your roof because it compromises the integrity of your shingles.

Do I Need a New Roof? Oftentimes the algae can be removed or cleaned and a new roof is not needed.  However, waiting too long to address the issue can cause a new roof to become a necessity.

With all of the Technology Today, Aren’t There Shingles Available That Reject the Growth of Algae? Excellent question!  If you’re in the market for a new roof, companies like GAF offer shingles with copper embedded into the shingle’s granules which prevent the growth of the algae.  GAF backs up this claim with on algae warranty on these type of shingles.

What are Methods that Can Be Used to Clean Algae off My Roof? There are a couple methods that can be utilized to eradicate algae from your roof.  They are:

1) Power Washing: While power washing can likely remove the algae off your roof, there’s also a strong chance that the power washing will also damage the granules on your shingles which will drastically lower your roof’s lifespan.  This method is NOT recommended especially since it can void some manufacturers’ roof warranties.

2) Soap & water with a scrub brush: Having a professional do this is really the way to go since they are accustomed to walking on roofs (though safety harnesses should still be used.)  Algae makes a roof slippery and so does the soap & water mixture.  Bleach can also be mixed in with water to create a cleaning solution.  However, bleach can damage your landscaping so consider this when opting for this method.

Once My Roof is Algae Free, is There Anything I Can Do to deter its Return? Your best options are zinc or copper strips that are installed under the rows of shingles closest to your roof’s peak.  As it rains, the rain transports the metal molecules down the sides of your roof which will kill, though not remove, preexisting algae.

Reviews

We Strive for 100% Customer Satisfaction

Delivering exceptional service is our No. 1 priority. Read these happy reviews from homeowners who were blown away by their home improvement experience with Lindus Construction.

"My LeafGuard® job morphed into a much larger job to solve all the problems in a 118-year-old house. Everything was done in a coordinated manner, with the best workers possible on the job for long hours. I hired Lindus on many recommendations, and they earned the good ratings. They do lots of work in my neighborhood. Exceptional workers."

Barb B.
St. Paul, MN
November 19, 2021

"Deck replacement with composite materials. Staff was friendly and knowledgeable, on time and communication was good. The deck looks great!"

Marrielle & Fred O.
Shoreview, MN
November 22, 2021

"Kept me in touch through out the whole process. Very happy with their work."

Shelly P.
Minnetonka, MN
November 11, 2021

"They replaced our windows from 1951!"

Becky S.
St. Croix Falls, WI
November 11, 2021

"Best product. Great people. They really know their business. You won't be disappointed! Thank you!"

Howard F.
Brooklyn Center
October 22, 2021

Lindus was very professional. Lindus arrived on time and finished in a timely manner. Overall it was a job well done."

Christopher O.
North St. Paul, MN
October 22, 2021

"Love the product! Everyone at Lindus was a pleasure to work with!"

Lynnae Z.
Circle Pines, MN
October 21, 2021

"Installed gutters. They had innovative solutions to the problems I was having with my existing gutters. Professional crew came, work hard, ask for feedback. Top-notch service. I always recommend."

Polly P.
Columbia Heights, MN
October 21, 2021

"Great company!!!!"

Jerry T.
Shoreview, MN
October 21, 2021

"Work was great. Crew did great work, fast, clean up was very good. Could not believe how fast that they did the job. When beyond what I expected. Very good work, great crew. Thank you."

Charles G.
Roberts, WI
October 14, 2021
75% Off Installation Labor on GAF Asphalt Shingles, LeafGuard® Gutters, Infinity® from Marvin Windows.  No Payments Or Interest Until April 2023. We are also offering a free heat map analysis with insulation estimates through January 31st, 2022.
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