Prefinished Metal Flashing: Types and Installation Guide

WEATHERCAP® is a patented soft lead cap installed within sealant-filled masonry joints. It acts as a protective shield for the sealant, reducing its exposure to UV rays and weather. Its primary function is to accommodate building movement, prevent joint checking, and create a durable, waterproof seal that significantly extends the life of the joint.

Yes, absolutely. While renowned for historic restoration, WEATHERCAP® is frequently specified for new construction to ensure maximum longevity for masonry joints. Our Type A-2 cap is specifically designed for new installations, providing long-term protection against moisture penetration and movement-related sealant failure from day one.

Type A is a flat cap designed for joints between masonry units on the same plane, such as copings, balustrades, and lintel tops. Type B is a 90-degree cove cap used for right-angle joints, like where a window sill meets a vertical wall. The choice depends entirely on the geometry of the joint being sealed.

Yes, when handled correctly. As with any lead product, installers should follow standard safety protocols, including wearing gloves and washing hands thoroughly after handling. Our products comply with OSHA regulations (29 CFR 1910.1025), and we provide all necessary technical information to ensure safe installation practices on site.

It protects the sealant in two key ways. First, it physically covers the sealant, shielding it from direct sunlight (UV degradation) and weather. Second, it reduces the effective size of the joint opening, which minimizes the amount of stress and movement the sealant must endure. This combined protection dramatically reduces sealant failure and margin checking.

Yes, our lead caps can be painted to match any desired color. The material also naturally oxidizes to a neutral grey that blends seamlessly with most stone and masonry, providing an excellent aesthetic finish whether it is painted or left in its natural state. This makes it a versatile choice for architecturally sensitive projects.