Cut Or Closed Valley’s Is The Question

Cut or closed valley’s: Many roofing contractors are making a big mistake by offering copper valleys as an architectural upgrade in performance and appearance to a new roof. Any contractor offering this does not know what he is doing. Copper and aluminum are not compatible metals. If copper valleys are used ALL other metals MUST be copper too. Drip edge, nails, gutters and downspouts. Water draining from a copper valley WILL corrode the drip edge and the aluminum gutters as well as the roofing nails. In addition, as copper valleys age they can stain the sidewall of the house, wood, brick and stone. Copper is the alpha of metals and is just one ingredient used in batteries because of its aggressive nature toward other metals.

Additionally, most copper valleys are formed with 16 OZ copper. This is a very thin metal compared to a shingle valley and is susceptible to corrosion due to acid rain, salt air and other non-compatible metals surrounding it.

Copper looks nice initially, but once it has aged it is greenish in color and not very noticeable and offers no additional performance. Using the roof shingles in the valleys will last as long as the roof itself. In a perfect setting Copper valleys have a lifespan about half of what todays shingles have. It really does not make sense to apply 50 year shingles and have the copper valleys deteriorate in half that time.

Please see: Galvanic corrosion in Wikipedia.

Once a copper valley corrodes the entire roof surrounding the valley will need to be removed to make repairs and install new shingles.

To learn more about copper valleys click here.

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AB Carnes Roofing is northeastern Massachusetts’ premier roofing contractor, serving Essex County and Merrimack Valley since 1977. We’re one of the largest residential and commercial roofing businesses in the region with nearly 10,000 projects under our belts. Whether working on a residential or commercial property, every project is performed under the highest building standards in the construction industry.

Our team delivers top-quality work while meeting all safety regulations. We’re happy to personalize our solutions to meet your exact needs, no matter which type of project you require and no matter how challenging. Give us a call today and Barry Carnes the owner will be happy to answer your questions.

AB Carnes Roofing is certified by Carlisle and CertainTeed, two of the industry’s most-respected roofing manufacturers.

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