
WEATHERCAP A-8 Type A Flat Joint Cap
- Largest Type A size, joints to 1 1/2 in
- Approx. 2.5 lb/ft for wide joints
- Outer coverage approx. 2 inches
U.S. Patented System
GSA Specified
Explore our complete line of patented lead tee caps, also known as WEATHERCAP®. Engineered to protect sealant in masonry joints from environmental stress and building movement, our caps ensure a long-lasting, weather-resistant seal. Ideal for historic preservation, restoration, and new construction projects across the United States.
































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WEATHERCAP®, sometimes called a lead tee cap or arrowhead, is a patented soft lead strip installed with sealant in masonry joints. It protects the sealant from environmental stress and accommodates building movement, preventing leaks and extending the joint's life. It is ideal for both historic restoration and new construction.
Talk to our experts for custom solutions and tailored guidance.

Specified in GSA procedures, our caps protect critical joints in landmark buildings, preserving architectural integrity.

Architects specify our system to ensure long-term weatherproofing and durability for masonry joints in new buildings.

Protecting critical masonry joints in capitols, monuments, courthouses, and university buildings from moisture damage.

Ensuring the longevity of masonry on high-traffic public buildings like train stations, museums, and city halls.
Talk to our experts for custom solutions and tailored guidance.
Our patented system is specified for iconic structures like the Washington Monument and U.S. Supreme Court, proving its reliability in critical preservation projects.
The unique soft lead design (U.S. Patent 6991400) flexes with building movement, protecting sealant and ensuring a durable, weather-resistant seal.
WEATHERCAP® covers sealant to protect it from environmental stress, corrosion, and mold, significantly reducing maintenance and preventing moisture damage.
Contact our team for technical specifications, CAD drawings, sizing guidance, and pricing. We typically ship stock items within 48 hours of order placement.
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.