How Long Do Zinc Roof Strips Last

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.

How long do zinc roof strips last.

I m starting a long term experiment on my own house. Every time it rains some of this zinc oxide leaches down the roof inhibiting the growth of moss and mildew. Many people seek zinc strips because they have been well marketed and often recommended. Patrick has a lot to say about you using zinc strips on your roof.

Some homeowners are unaware that they may or may not have zinc strips installed. 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. What is zincshield. Zinc strips kill moss.

2 5 3 5 and 6 0 see faqs for specific applications for each width. In november of 2011 i wrote a blog post about using zinc strips to prevent moss from growing on the roof or possibly to kill moss. Watch this video decide for yourself whether it s a good investment. 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.

I ll report back with the results in a. Preventing roof moss with zinc strips in this video this old house general contractor tom silva shares tips for keeping a roof free of moss and mold by this old house. Zinc strips are also supposed to be effective at preventing black stains from showing up on the roof. 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.

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. Three widths are available. Homeowners can install strips of zinc purchased at a hardware store. 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. The zinc strip is installed along both sides of the ridge of the roof so that most of the strip is exposed. Zinc is sold as a moss prevention product. Zinc strip moss control on roofs.