Zinc Roof Defense 50 Ft. Roll
What is Zinc Roof Defense and how does it work?
What is it? Our Zinc Roof Defense is 99.9% pure zinc, it comes in a 4 inch wide roll and is simply rolled out along the roofs ridge line and applied with nails and adhesive to prevent the return of any stains caused by roof fungus below it.
Companies sell different width's and thicknesses of roof zinc, most is really so thin that it will tear in the wind! I guarantee mine won't ever tear or I will replace it for the life of the roof! that is a guarantee no other zinc manufacturer will make! The width of the zinc greatly influences the protection the zinc can provide below. The rule of thumb when it comes to roof zinc is that for every 1 inch the zinc is wide it will protect 10 feet below. So the wider the zinc the better protection. Most residential roofs have a run from the ridge to the gutter span 18-28 ft. we made our zinc 4 inches wide to give every roof more than enough protection.
How does it work? The "theory" is that as it rains, the rain water washes millions of tiny microscopic metal ions from the zinc which flow down over the roof, coating the roof with zinc and prevents stains caused by fungus.
The effectiveness of the "metal ion" theory can be seen on most any stained roof, just take a look under any metal object on the roof, NOT aluminum objects like skylight flashing, but chimney lead, a metal venting pipe that sticks up out of the roof or best yet beneath a copper copula or weather vane, you should notice the area below it is free of roof stains.
The two photos below completely show the effectiveness of metal ions washing over a roof, the top picture is of a 20 year old roof, the metal ions from the copper cupola above the garage keep the roof clean all the way to the gutter. To the right, below the chimney the roof remains clean for about 10ft from the metal ions in the lead flashing around the chimney but lead bleeds very few active metal ions, therefore we always suggest applying Zinc Defense below chimneys. Copper and Zinc give off the most ionic protection of any metal that can be applied to the roof. The second photo down is an 11 year old roof that has a perfectly clean streak right below the copper cupola. These two photos are clear evidence of how effective zinc is, if you have the opportunity to apply zinc to your roof, we highly recommend it.
