Lead Flashing for Brick and Masonry Joint Protection

Lead joint caps are installed with a splined anchor shaft embedded directly into a sealant-filled masonry joint, so the cap sits within the caulk bead rather than being mechanically fastened to the brick. Type A flat caps suit same-plane joints while Type B 90° cove caps suit right-angle joints; sizing is selected based on measured joint width.

Type A is a flat-cap configuration used where masonry units meet approximately in the same plane, such as copings, belt courses, and cornice cross joints. Type B is a 90° cove-cap configuration used where masonry elements meet at right angles, such as lintels joining a wall, window frames, sills, and entrance steps. Both are supplied in 6-foot lengths for field cutting.

Soft lead has low tensile strength and a low elastic modulus, allowing it to creep and permanently flex as a building settles or moves, rather than tearing or shearing like rigid materials. This ongoing flexibility keeps the joint sealed over decades, resists corrosion and mold, and oxidizes to a neutral grey that blends visually with surrounding masonry.

Yes. Stock sizes such as the A-2 are designated for new-construction installation, while other A-Series and B-Series sizes, along with application-specific systems, are suitable for both new masonry construction and historic restoration projects, including landmark and government buildings under GSA preservation standards.

Because WEATHERCAP is a lead product, installers should wear gloves during handling and wash hands and body thoroughly afterward. Lead exposure is regulated under OSHA 29 CFR 1910.1025, and contractors should follow applicable workplace safety procedures for lead-containing building materials during cutting and installation.

Joint cap sizing is based on measured joint width; stock sizes range from roughly 5/16 in to 1 1/4 in of coverage across the A-Series and B-Series lines. Manufacturer technical staff provide sizing guidance, CAD drawings, and sample specifications to match the correct cap to your specific masonry joint condition.