How Long Do Zinc Roof Strips Last

Watch this video decide for yourself whether it s a good investment.

How long do zinc roof strips last.

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. Three widths are available. I m starting a long term experiment on my own house.

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. 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. Zinc strips are also supposed to be effective at preventing black stains from showing up on the roof. 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.

Zinc strip moss control on roofs. Zincshield is a 99 2 pure zinc strip a trace of copper is added to provide strength and proper hardness in 50 foot rolls. Very large roofs may require extra protection. 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. Patrick has a lot to say about you using zinc strips on your roof. Homeowners can install strips of zinc purchased at a hardware store. 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.

2 5 3 5 and 6 0 see faqs for specific applications for each width. Zinc is sold as a moss prevention product. Some homeowners are unaware that they may or may not have zinc strips installed. The zinc strip is installed along both sides of the ridge of the roof so that most of the strip is exposed.

Every time it rains some of this zinc oxide leaches down the roof inhibiting the growth of moss and mildew. 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. 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. 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.