GSA Specified certified

GSA Specified

U.S. Patented System certified

U.S. Patented System

Column Caps for Structural Support: Simpson Strong-Tie Options

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.

WEATHERCAP A-8 Type A Flat Joint Cap
WEATHERCAP B-8 Type B 90° Cove Cap
WEATHERCAP A-6 Type A Flat Joint Cap
WEATHERCAP B-4 Type B 90° Cove Cap
WEATHERCAP A-2 Type A Flat Joint Cap
WEATHERCAP B-3 Type B 90° Cove Cap
WEATHERCAP Type A Flat Joint Cap
WEATHERCAP B-2 Type B 90° Cove Cap
WEATHERCAP B-6 Type B 90° Cove Cap
WEATHERCAP Type B 90° Cove Cap
WEATHERCAP A-3 Type A Flat Joint Cap
WEATHERCAP A-4 Type A Flat Joint Cap
WEATHERCAP Entrance Step Joint Protection
WEATHERCAP Window and Door Frame Joint Protection
WEATHERCAP Balustrade Joint Protection
WEATHERCAP Window Sill Joint Protection
WEATHERCAP Joint Protective System (Lead Stone Flashing / Tee Caps)
WEATHERCAP Lead Arrowhead Masonry Joint Caps
WEATHERCAP Custom and Large-Size Masonry Joint Caps
WEATHERCAP Masonry Moisture Penetration Protection
WEATHERCAP Glass Block Perimeter Joint Protection
WEATHERCAP Window and Door Lintel Joint Protection
WEATHERCAP New Construction Masonry Joint Protection
WEATHERCAP Portico, Bracket and Pilaster Joint Protection
WEATHERCAP Building Movement and Joint-Checking Protection
WEATHERCAP Historic Masonry Preservation Joint Protection
WEATHERCAP Water Table Joint Protection
WEATHERCAP Corner and Fillet Joint Protection
WEATHERCAP Horizontal and Vertical Masonry Joint Protection
WEATHERCAP Cornice and Belt Course Joint Protection
WEATHERCAP Coping and Parapet Joint Protection
WEATHERCAP Masonry Sealant Protection System

Our Range of Products

WEATHERCAP A-8 Type A Flat Joint Cap

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
WEATHERCAP B-8 Type B 90° Cove Cap

WEATHERCAP B-8 Type B 90° Cove Cap

  • Largest Type B cap for joints up to 1 1/4 in
  • Heavy-duty 2.5 lb per foot construction
  • Perpendicular anchorage for max stability
WEATHERCAP A-6 Type A Flat Joint Cap

WEATHERCAP A-6 Type A Flat Joint Cap

  • Type A flat cap for wide joints up to 1 1/4 in
  • Approx 1 1/2 inch outer coverage span
  • Durable 0.83 lb per foot lead cap
WEATHERCAP B-4 Type B 90° Cove Cap

WEATHERCAP B-4 Type B 90° Cove Cap

  • Type B cove cap for joints up to 5/8 inch
  • Approx 3/4 inch outer coverage protection
  • Flexible lead resists corrosion and mold
WEATHERCAP A-2 Type A Flat Joint Cap

WEATHERCAP A-2 Type A Flat Joint Cap

  • Type A flat cap for narrow masonry joints
  • Fits joints under 3/8 inch wide
  • Lightweight at approx 0.26 lb per foot
WEATHERCAP B-3 Type B 90° Cove Cap

WEATHERCAP B-3 Type B 90° Cove Cap

  • Type B cove cap for joints up to 1/2 inch
  • Horizontal or perpendicular anchorage supported
  • Compact 0.22 lb per foot lead construction

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Frequently Asked Questions

What is a column cap?

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.

What is column end capping?

What is the purpose of a column cap?

What is the WEATHERCAP system made of?

What's the difference between Type A and Type B caps?

Can WEATHERCAP products be used in new construction?

How are WEATHERCAP products shipped?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Historic Building Preservation

Historic Building Preservation

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

Architectural Masonry

Architectural Masonry

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

Government & Institutional Buildings

Government & Institutional Buildings

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

Window & Door Installation

Window & Door Installation

Sealing perimeter joints around window sills, lintels, and frames to prevent moisture penetration.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Why Architects & Preservationists Choose Weathercap

Proven on National Landmarks

Trusted for restoring America's most iconic buildings, including the Washington Monument, U.S. Supreme Court, and Smithsonian Institution.

Patented Protection Technology

Our unique soft lead system (U.S. Patent 6991400) provides a flexible, permanent seal that accommodates building movement and extends sealant life.

GSA-Specified for Preservation

Specified in the U.S. General Services Administration's Historic Preservation Technical Procedures, ensuring compliance for government projects.

Get a Quote for Your Masonry Project

Contact our team for technical specifications, CAD drawings, sizing guidance, and pricing. We typically ship materials within 48 hours of order placement.

Contact Us Today

For immediate assistance, feel free to give us a direct call at (985) 649-4000.