Located in Plettenberg, Germany, metal work on the dormers for the Axel Mayer project was created by Copper Exclusive's Erno Ovari, veteran European craftsman, using 0.7 mm copper, as well as 0.8 mm copper moulding. The copper dormer shingles were hand-crafted.

The project, which included the roof and dormers, gained a great deal of attention which led to it being featured in “Baumetall”, a widely-known trade journal in Europe.

"The entire moulding is seamed into the copper wall covering; that’s why there are no visible nails, screws or soldering," explained Christina Lauritzen, CEO of Copper Exclusive, who handles contracting work in the United States, and is also a supplier of quality European-crafted roofing supplies. She note that the windowsill connection (shown in one of the photos) was done without silicone.

Erno Ovari's career in metal craft dates back to 1985, with experience in Germany, Austria, Hungary and Switzerland as well as 11 years of intensive education in this trade. He has achieved the degree of “Meisterbrief”, the highest contractor certification in Europe.