These metal strips should come with the roofing shaped to conform to the roof panels.
Galvanized roof strips.
Amerimax c3s 1 5 in x 10 ft unpainted galvanized galvanized steel drip edge.
Step 4 maintaining the zinc strips.
Install filler strips or drip edging on eaves and edges to cover gaps between the sheathing and the metal panels.
Use galvanized roofing nails with neoprene washers in 2ft intervals.
Use galvanized nails with a hammer to install edging and filler strips.
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The zinc strip is installed along both sides of the ridge of the roof so that most of the strip is exposed.
Also when galvanized steel is cut to size the cut edge exposes steel to the air thus allowing rust to occur along the length or edge where it was cut.
The solution in each case is zincshield zinc strips.
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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.
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Vented shelterguard closure strip.
The exposed zinc will oxidize forming zinc oxide.
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Length can be cut with scissors or tin snips caution edges may be sharp wear gloves when handling.
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The zinc metal strips are made from a variety of metals.
These chemicals will create an environment that will prevent moss growth.
By installing the strips on the ridge any water that runs over them will trickle down the roof carrying the zinc chemicals with it.
Working on roofs may be dangerous.
Not only is the zinc protection lost but the resulting rust oxide can stain the roof red now.
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Every time it rains some of this zinc oxide leaches down the roof inhibiting the growth of moss and mildew.
Wash hands before eating when handling zinc strip.
Very large roofs may require extra protection.