Zinc strip will help control the growth of moss and mildew it will.
How to install zinc strips on roof.
Install z stop zinc strips 50 foot roll to keep it from growing back.
Like rooflover said the zinc strips don t work and they certainly don t work on existing roofs that already have moss algae on them.
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.
The zinc metal strips are made from a variety of metals.
If the roof extends for more than 14 4 27 m down from the ridge where the zinc strip is installed re growth can occur.
The roof must be cleaned of moss and or mildew.
Posted for a friend.
Copper strips however do work and should be exposed 2 and placed every 10 up the roof.
In these cases installing a second zinc strip approximately halfway down the roof slope is recommended.
The strips are then coated with zinc.
These chemicals will create an environment that will prevent moss growth.
If possible it is best to slide about 1 4 under the roof ridge vent roof cap or the top row.
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.
Wouldn t that allow water through the roof.
This article gives instructions for installing zinc strips at the ridgeline to inhibit moss.
A good product to consider is roof be clean see www roofbeclean for product information.
On roofs with moss algae mildew or fungus the existing growth must first be removed by pressure washing or brushing then the root systems must be chemically treated and destroyed see magazine articles for bleach solution.
I don t actually have a roof.
Step 4 maintaining the zinc strips.
This picture shows nails through the zinc strip.
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.
By installing the strips on the ridge any water that runs over them will trickle down the roof carrying the zinc chemicals with it.