How Long Do Zinc Roof Strips Last

Very large roofs may require extra protection.

How long do zinc roof strips last.

I conducted a fairly long term experiment by installing zinc strips on a moss covered garage roof and showed before and after photos after the zinc had sixteen months to work its magic. Zincshield is installed at the top of the roof below the roof ridge vent roof cap or below the first row of shingles and below any. Three widths are available. The moss dies and the roof stays moss free for 10 feet under a zinc strip for five years or so if it stays in place and stays flat.

If possible it is best to slide about 1 8 to 1 4 under the roof ridge vent roof cap or the top row of shingles. Zinc strips kill moss. Many people seek zinc strips because they have been well marketed and often recommended. Zinc strips are also supposed to be effective at preventing black stains from showing up on the roof.

Zinc is sold as a moss prevention product. Watch this video decide for yourself whether it s a good investment. What is zincshield. Zinc strip moss control on roofs.

The zinc strip is installed along both sides of the ridge of the roof so that most of the strip is exposed. In addition the strips often begin to warp over time and even the small clean streaky sections will begin to see moss and algae growth. Zincshield is a 99 2 pure zinc strip a trace of copper is added to provide strength and proper hardness in 50 foot rolls. Patrick has a lot to say about you using zinc strips on your roof.

I m starting a long term experiment on my own house. Homeowners can install strips of zinc purchased at a hardware store. Using 2 5 or 3 5 wide zincshield install by butting the zinc strip against the ridge vent roof cap or the top most row of shingles at the roof ridge. 2 5 3 5 and 6 0 see faqs for specific applications for each width.

Some homeowners are unaware that they may or may not have zinc strips installed. The exposed zinc will oxidize forming zinc oxide. Sometimes it is difficult to see the roof and we have had clients think that zinc strips were installed but ultimately none. I ll report back with the results in a.