The Roof Cleaning Institute Of America Training & Certification Forum
"Find A Certified Roof Cleaner Directory"

MJ · Dec 13, 2011

Friends don't let friends buy ZINC!

Dec 13, 2011

Nice photos... Great title for the thread!

A to Z · Deleted

I see this all the time, the only way they work is if they are installed every few feet or so in rows traveling across the roof. Copper works a little better, but nothing is guaranteed to work.
Nice photos!

John Burdine · Dec 13, 2011

Am i seeing the third picture right....the zinc looks to have worked for the first foot or so and then its infested? maybe its just the shadows. would you mind if i borrowed these to educate my customers in Iowa about the failure of zinc strips?

gutterdog · Dec 13, 2011

yup! strips need to be installed in rows going down the roof to work! lol!!! Make a real ugly roof! No GCM

MJ · Dec 14, 2011

My take is that they did work a little, but working a little is not what people expect. My guess is they "might" have created a greater concentration of algae in the lower area of the roof, maybe the same effect of spaying a ridge cap only. I know this topic has been presented in prior post, but I thought it was worth a rehash. I have never seen them installed every two inches. How much would that cost?

The Roof Cleaning Institute Of America Training & Certification Forum "Find A Certified Roof Cleaner Directory"

The Roof Cleaning Institute Of America Training & Certification Forum
"Find A Certified Roof Cleaner Directory"