Copper
Soldered, not caulked.
Copper outlasts nearly everything around it, if its seams are soldered and it’s kept away from metals it reacts with.
Casco / Copper
How copper ages.
Year one
Bright
New copper is the color of a new penny. It darkens within months.
Years 2–15
Brown
A deep brown patina forms. Most people expect green sooner.
Years 15+
Verdigris
The green patina develops, faster near salt air. It protects the metal underneath.
Copper prices.
A bay that leaks? Copper fixes it for good.
A Yeti Trades Co. portfolio site
The heritage roofing site, built in seven days.
Sixteen pages: three materials compared by lifespan, a repair-before-replace argument, ice dams explained for Maine, and Portland’s historic districts covered.