Cast Stone Pool Coping Options for Every Style

A WEATHERCAP® is a soft lead strip, often called an arrowhead or tee cap, designed to be installed with sealant in masonry joints. Its patented design protects the sealant from environmental exposure and allows it to accommodate building movement without failing. This prevents leaks and extends the life of the joint seal, making it ideal for both new construction and historic restoration projects.

The system works by using a soft, flexible lead cap that has low creep strength. When a building moves, the lead cap deforms and 'creeps' into the new joint configuration without tearing. This absorbs stress that would otherwise cause the sealant to crack or pull away from the masonry (margin checking), thus preventing moisture penetration and joint failure.

Absolutely. WEATHERCAP® is ideal for historic preservation and is specified in the U.S. General Services Administration (GSA) Historic Preservation Technical Procedures. Its ability to blend with masonry (oxidizing to a neutral grey) and protect vulnerable, aging structures makes it a preferred choice for landmark buildings, including numerous state capitols and national monuments.

Type A caps are flat and designed for joints where masonry units are in the same plane, such as the top joints of a coping or a balustrade. Type B caps have a 90-degree cove shape and are used for right-angle joints, like where a window sill meets a wall or a cornice meets a parapet. The choice depends entirely on the geometry of the masonry joint you need to protect.

Yes, our lead joint caps can be painted to match the surrounding masonry or architectural details. If left unpainted, the soft lead will naturally oxidize to a neutral grey color that blends in seamlessly with most stone and masonry work, making it visually unobtrusive for both new and historic buildings. It also naturally resists corrosion and mold.

All our standard and application-specific joint protection systems are supplied in 6-foot lengths. This allows for easy handling and field cutting to fit the specific dimensions required for your project. We typically ship materials within 48 hours of an order being placed to ensure your project stays on schedule. Custom sizes may also be available upon request.