Cedar Roof Copper Flashing

It is apparent from the modern applications where copper is improperly used as a flashing on cedar roofing that a certain type of erosion occurs that is unique to the metal on cedar roofs flashed with copper.

Cedar roof copper flashing. Copper is a popular flashing material with wood roofs although some experts caution against using copper in direct contact with red cedar or its runoff since the soluble tannins in cedar can etch copper and in extreme cases lead to perforation of the flashing within 10 to 20 years see also flashing wall details copper and metal choices for metal roof systems copper. Watch this short video first. Heavier weight flashing 2 oz holds up better than lighter flashing which may deteriorate faster than the shingles. It shows installing the copper strip on an existing roof not a.

In addition copper flashing and gutters generally should not be used with red cedar shingles as staining will occur although there are some historic examples where very heavy gauge copper was used which outlasted the roof shingles. Run the strips under a row of. Cedar shingle on roof using special copper flashings. Copper roof flashing is also malleable and takes soldering well.

A copper strip on each side of the roof will extend the life of asphalt shingles 40 or 50 years. Installing copper strips on a shingle roof revised 2019. It s also highly durable and has a long life. Cop r shield copper wood frame flat shingle flashing and termite shield model 5004390 39 50 roll 39 50 roll.

Copper flashing can be used with a cedar roof in most areas with the exception of areas that are exposed to acid rain areas east of the great lakes. On the other hand it does discolor into a patina which some homeowners dislike but others favor. Well we don t do much roofing anymore but we are busy with our wood heating business. You will still routinely find copper flashing around chimneys.

Advanced building products 8 in. Acid rain plays no role in the increased degradation of copper flashing on cedar roofs as compared to slate roofs.