
WEATHERCAP Joint Protective System (Lead Stone Flashing / Tee Caps)
- Soft lead flexes with building movement
- Neutral grey patina blends with masonry
- Extends sealant life by reducing exposure
GSA Historic Preservation Specified
U.S. Patent 6991400
Explore Weathercap's Masonry Products, featuring the patented WEATHERCAP Joint Protective System that shields caulk and sealant joints in masonry from moisture, movement, and corrosion. Trusted on iconic U.S. landmarks, these soft lead flashing systems extend joint life and preserve structural integrity for new construction and historic restoration alike.


Masonry products are materials and systems used to construct, seal, or protect brick, stone, and concrete structures. This includes joint protection systems like WEATHERCAP, which shield caulk and sealant joints in horizontal and vertical masonry from moisture penetration, building movement, and environmental degradation, extending the service life of the structure.
Talk to our experts for custom solutions and tailored guidance.

Protects mortar joints on stone and masonry facades of landmark buildings during restoration work.

Used on federal buildings, state capitols, and monuments requiring GSA-compliant joint protection.

Applied to university buildings to protect masonry joints from moisture and long-term settlement.

Installed in new masonry builds to prevent moisture penetration from the outset of construction.
Talk to our experts for custom solutions and tailored guidance.
Installed at the Washington Monument, U.S. Supreme Court, and Smithsonian Institution, demonstrating decades of reliable field performance.
U.S. Patent 6991400 protects a soft lead system that flexes with building movement while sealing out moisture permanently.
Specified in GSA Historic Preservation Technical Procedures, ensuring compliance for federal and institutional restoration projects.
Submit your project details and our team will respond with technical guidance, specifications, and pricing for your masonry joint needs.
For immediate assistance, feel free to give us a direct call at (985) 649-4000.
For immediate assistance, feel free to give us a direct call at (985) 649-4000.