Expansion Joint Supply: Key Types & Applications in the US

WEATHERCAP® is a soft lead cap installed within a sealant-filled masonry joint. Its low tensile strength allows it to 'creep' and adapt to building movement without failing. It protects the underlying sealant from environmental damage and reduces the effective joint opening, significantly prolonging the weather seal's integrity and preventing leaks.

Type A caps are flat and designed for joints on a single plane, like the top of a coping or a balustrade. Type B caps have a 90-degree cove shape and are used for right-angle joints, such as where a cornice meets a wall, at window sills, or around entrance steps. Both types provide the same patented protection for sealant.

Yes, absolutely. While renowned for historic preservation, WEATHERCAP® is highly effective for new construction, providing long-term protection for masonry joints from day one. Our A-2 Type A cap is specifically designated for new construction installations, ensuring the longevity of joints in modern buildings across the US.

WEATHERCAP® is a lead product and requires standard safety precautions during installation. As per OSHA regulations (29 CFR 1910.1025), it's important to use gloves and wash hands and body thoroughly after handling. Once installed and oxidized, it is stable and poses minimal risk to the public or environment.

Our 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 from our US facility within 48 hours of an order being placed to ensure your project stays on schedule anywhere in the United States.

Yes, WEATHERCAP® can be painted to match the surrounding masonry or architectural elements. However, many clients prefer its natural finish. The soft lead surface quickly oxidizes to a neutral, non-reflective grey that blends seamlessly with most stone and masonry, becoming inconspicuous over time and requiring no maintenance.