Some copper work is decorative, and some is quietly protective. On this Chester Springs home the copper does both: a run of copper sill pan flashing installed beneath the windows above a slate roof, where it directs water away from the wall and adds a warm metal accent that will patina beautifully over time. It is the kind of detail that protects the home for decades while looking intentional from the ground.

What the Chester Springs copper project involved
Sill flashing sits at a critical spot where water runs off the window and needs to be carried clear of the wall below. The scope covered:
- Formed copper sill pan flashing beneath the windows
- Soldered seams for a permanent, watertight detail
- Integration with the slate roof and the wall below
- Compatible fasteners to avoid reactions with other metals
- A clean profile that reads as a finished architectural detail
Why sill flashing matters
The base of a window is one of the most common places for water to sneak into a wall, especially on older masonry and stone homes. Properly formed and soldered copper flashing intercepts that water and carries it clear, protecting the framing and finish behind it. The moisture-management principles behind it are covered well by Building Science Corporation.

Considering copper details?
Copper flashing and details are part of our copper work service. Copper is also a premium option for gutters, covered in our guide on copper gutters and downspouts.
Want copper details that protect and impress? Get a free estimate and we will take a look at your home.


