WEATHERCAP Parapet and Coping Joint Protection

Parapet flashing is a material used to waterproof the tops and sides of a parapet wall, preventing water from entering the building envelope. This typically includes metal coping, membranes, and sealant. WEATHERCAP® enhances this system by protecting the sealant in coping joints, which are common failure points, ensuring a long-lasting, weather-tight seal.

WEATHERCAP® is a soft lead cap installed over sealant in coping joints. It shields the sealant from UV degradation and weather. Its flexibility allows it to 'creep' and adapt as the building moves, reducing stress on the sealant bead. This prevents margin checking and premature failure, significantly extending the life of the joint.

Absolutely. WEATHERCAP® is ideal for historic restoration and is specified in the U.S. GSA's Historic Preservation Technical Procedures. Its soft lead construction is compatible with historic masonry and mortar, and it oxidizes to a neutral grey that blends seamlessly with stone, preserving the building's aesthetic integrity while providing modern protection.

Type A is a flat cap designed for joints where masonry units are in the same plane, such as the top surfaces of copings or across lintels. Type B is a 90-degree cove cap used for right-angle joints, such as where a coping stone meets a vertical wall or at the perimeter of a window frame. Both provide sealant protection.

Yes, WEATHERCAP® can be painted to match any adjacent materials for aesthetic purposes. However, many architects and restorers prefer its natural finish. The soft lead quickly oxidizes to a neutral, non-reflective grey that blends unobtrusively with most masonry and stone, making it a visually compatible choice for historic buildings.

All WEATHERCAP® products, for both stock and application-specific systems, are supplied in standard 6-foot lengths. This allows for easy handling, transportation, and field cutting to fit the specific dimensions of the masonry joints on your project. Materials are typically shipped within 48 hours of order placement.