
WEATHERCAP A-8 Type A Flat Joint Cap
- Largest Type A cap for joints up to 1 1/2 in
- Approx 2 inch outer coverage protection
- Robust 2.5 lb per foot heavy-duty design
GSA Specified
U.S. Patented System
Explore our patented soft lead joint protection systems for masonry. Ideal for historic preservation and new construction, these caps protect sealant in joints for cornices, copings, and window lintels. Our flexible, corrosion-resistant design ensures long-term weatherproofing and is trusted on national landmarks across the United States.
































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A column cap is a structural element placed on top of a column or post. It broadens the supporting surface area to better distribute the load from a beam or slab resting upon it. This prevents the load from crushing the column material and provides a more stable connection between the vertical column and the horizontal member it supports.
Talk to our experts for custom solutions and tailored guidance.

Protecting vulnerable masonry joints in landmark restoration projects on state capitols, museums, and monuments.

Ensuring long-term weatherproofing for new construction of parapets, copings, cornices, and belt courses.

Specified for federal, state, and university projects requiring durable, GSA-compliant joint protection.

Sealing perimeter joints around window sills, lintels, and frames to prevent moisture penetration.
Talk to our experts for custom solutions and tailored guidance.
Trusted for restoring America's most iconic buildings, including the Washington Monument, U.S. Supreme Court, and Smithsonian Institution.
Our unique soft lead system (U.S. Patent 6991400) provides a flexible, permanent seal that accommodates building movement and extends sealant life.
Specified in the U.S. General Services Administration's Historic Preservation Technical Procedures, ensuring compliance for government projects.
Contact our team for technical specifications, CAD drawings, sizing guidance, and pricing. We typically ship materials 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.