How Long Do Zinc Roof Strips Last

Many people seek zinc strips because they have been well marketed and often recommended.

How long do zinc roof strips last.

Zinc strip moss control on roofs. Watch this video decide for yourself whether it s a good investment. Sometimes it is difficult to see the roof and we have had clients think that zinc strips were installed but ultimately none. 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.

The exposed zinc will oxidize forming zinc oxide. 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. Zincshield is a 99 2 pure zinc strip a trace of copper is added to provide strength and proper hardness in 50 foot rolls. Some homeowners are unaware that they may or may not have zinc strips installed.

Zinc strips are also supposed to be effective at preventing black stains from showing up on the roof. Zinc strips kill moss. Very large roofs may require extra protection. 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.

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. 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. I m starting a long term experiment on my own house. 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 is sold as a moss prevention product. Three widths are available. I ll report back with the results in a. 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.

2 5 3 5 and 6 0 see faqs for specific applications for each width. 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. Homeowners can install strips of zinc purchased at a hardware store. What is zincshield.