When an installer works with Copper gutters there are many things that should be done different that when working with other types of gutters. One of the most common mistakes an installer makes is the type of fasteners and hangers. To do the job correctly the installer should use Stainless Steel screws, Copper rivets, or Copper coated Steel screws. When choosing a hanger the installer must use either Copper hangers or Brass hangers. Water that runs off of Copper will corrode a standard Steel gutter screw or an Aluminum or Steel rivet. This is due to galvanic corrosion. If an installer uses Aluminum hangers the same thing will happen. The Aluminum will corrode! Also it is very important to use a type of sealant that is compatible with copper. An Aluminized sealant is not ok to use as well as some types of Acrylic sealants. See our pictures of our work page for some photos of our Copper work. Last there are two common thicknesses of Copper gutter stock that are available. These are 16 ounce and 20 ounce. 20 ounce is the stronger, thicker, longer lasting of the two being the only (Lifetime) product.
Below is an article written by Robert J Boessen of Terracon Consultants
This is an article written about the expansion and contraction of various types of roofing and gutter metals.
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