Cast Stone Chimney Cap Options for Every Home Style

The best protection for any masonry structure, including chimneys, involves safeguarding its joints. WEATHERCAP® is not a chimney cap itself, but a patented lead flashing that protects vulnerable sealant joints on copings, cornices, and other masonry elements from weather damage. It ensures the longevity of the entire assembly by preventing joint failure due to movement or settlement.

WEATHERCAP® is a soft lead strip installed within a sealant-filled masonry joint. Its flexibility allows it to 'creep' and adapt to building movement, preventing stress on the sealant. This covers the sealant from environmental exposure, reduces the effective joint opening, and provides a durable, weather-resistant barrier that significantly extends the life of the joint.

Absolutely. It is ideal for historic restoration and is specified in the U.S. General Services Administration's Historic Preservation Technical Procedures. Our system has been used to protect numerous national landmarks, including the Washington Monument and the U.S. Supreme Court, making it a trusted solution for preserving irreplaceable architecture.

WEATHERCAP® comes in two primary configurations to suit different joint geometries. Type A is a flat cap designed for joints between masonry units on the same plane, such as on top of a coping. Type B is a 90-degree cove cap used for right-angle joints, like where a cornice meets a wall or a window sill joins the surrounding masonry.

Yes, WEATHERCAP® can be painted to match any desired aesthetic. If left unpainted, its lead surface quickly oxidizes to a neutral grey color that blends seamlessly with most stone and masonry, providing a discreet and effective seal. This versatility makes it suitable for both historic preservation and new construction projects where appearance is key.

We offer a range of stock sizes in both Type A and Type B configurations to fit masonry joints from under 5/16 inch up to 1 1/2 inches wide. For unique project requirements, such as oversized or non-standard joint conditions often found in historic restoration, we also provide custom and large-size caps by special order to ensure a perfect fit.