Wabo Expansion Joint Systems for Reliable Structure Integrity

It is a patented soft lead strip, available in flat (Type A) or cove (Type B) profiles, that is installed with sealant in masonry joints. It is designed to protect the sealant, accommodate building movement, and prevent moisture penetration, significantly extending the life of the joint and preserving the structure's integrity.

The soft lead cap covers the sealant, protecting it from UV degradation and weather. It also reduces the effective joint opening size and flexes with building movement without tearing. This prevents common sealant failure points, such as margin checking and adhesion loss, resulting in a much longer-lasting seal.

Yes, WEATHERCAP® is ideal for both new construction and historic restoration. By incorporating our joint protection system into new masonry designs, architects and builders can ensure long-term durability and weather resistance for elements like copings, cornices, and window sills from day one, reducing future maintenance costs.

Type A caps have a flat profile and are used for joints between masonry units on the same plane, such as the top joints of copings or balustrades. Type B caps have a 90° cove profile and are designed for right-angle joints, such as where a horizontal surface like a window sill meets a vertical wall.

Yes, the lead cap can be painted to match the surrounding masonry or architectural trim. If left unpainted, the surface naturally oxidizes to a neutral grey color that blends in seamlessly with most stone and masonry, providing a discreet and effective seal that does not detract from the building's aesthetic.

All WEATHERCAP® products are supplied in standard 6-foot lengths, which can be easily cut and fitted on site. We maintain a full manufacturing and supply chain, and materials are typically shipped within 48 hours of an order being placed to locations across the United States. All sales are final.