John Mahan

Go beyond the basics: A few additional bends of your copper piece turn this functional window cap flashing into a decorative detail

A pro shows how he shapes and solders copper cap flashing, a window's first line of defense against water

Learn how to shape and solder copper cap flashing, a window's first line of defense against water and the best way to prevent rot, insects, and mold

A professional roofer demonstrates ways to use a stationary brake

Slate-roofing contractor John Mahan demonstrates how he uses a portable brake to cut metal for drip-edge flashing  

A skilled installer shows how to work with slate tiles

Realizing that their old shop was just too small, these roofers designed a shop with expansion possibilities