GSA Specified Product certified

GSA Specified Product

U.S. Patented System certified

U.S. Patented System

Expansion Joint Drain Types for Effective Plumbing Solutions

Explore various expansion joint drain types for effective weatherproofing. Our products, featuring patented soft lead joint caps, are designed to protect masonry joints from moisture penetration. They function as a critical drainage and sealing component for copings, cornices, and historic structures, extending sealant life and preventing leaks.

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

Our Range of Products

WEATHERCAP A-8 Type A Flat Joint Cap

WEATHERCAP A-8 Type A Flat Joint Cap

  • Largest flat cap for joints under 1 1/2 in
  • Outer coverage approx. 2 in for wide joints
  • Approx. 2.5 lb/ft, supplied in 6-ft lengths
WEATHERCAP B-8 Type B 90° Cove Cap

WEATHERCAP B-8 Type B 90° Cove Cap

  • Largest cove cap for joints under 1 1/4 in
  • Perpendicular anchorage only, 2.5 lb/ft weight
  • Outer coverage approx. 1 3/4 in wide
WEATHERCAP Building Movement and Joint-Checking Protection

WEATHERCAP Building Movement and Joint-Checking Protection

  • Designed as adjunct to caulk for moving joints
  • Low elastic modulus accommodates settlement
  • Reduces moisture penetration from joint failure
WEATHERCAP Historic Masonry Preservation Joint Protection

WEATHERCAP Historic Masonry Preservation Joint Protection

  • Lead flashing system for historic preservation
  • Works with sealant to weatherproof joints
  • Suits parapets, copings and belt-course ledges
WEATHERCAP A-6 Type A Flat Joint Cap

WEATHERCAP A-6 Type A Flat Joint Cap

  • Flat cap for joints under 1 1/4 in wide
  • Covers copings, cornices and lintel joints
  • Approx. 0.83 lb/ft, supplied in 6-ft lengths
WEATHERCAP B-4 Type B 90° Cove Cap

WEATHERCAP B-4 Type B 90° Cove Cap

  • Cove cap covers joints under 5/8 in wide
  • Flexible lead creeps with structural shifts
  • Protects sealant, extends its service life

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Frequently Asked Questions

What is the purpose of expansion joints in drainage systems?

Our products protect masonry expansion joints from water, effectively channeling moisture away. The soft lead cap covers sealant, accommodating building movement and preventing leaks that could damage the structure. This ensures long-term durability and weather resistance, serving a critical moisture management function.

How does WEATHERCAP® extend the life of sealant?

What are the main differences between Type A and Type B caps?

Is the lead material safe to handle during installation?

Can WEATHERCAP® be used in new construction projects?

How quickly are orders shipped?

Can the joint caps be painted?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Historic Preservation

Historic Preservation

Protecting landmark structures from water damage by sealing vulnerable masonry joints on cornices, copings, and façades.

New Architectural Construction

New Architectural Construction

Ensuring long-term joint integrity and weatherproofing for modern buildings with projecting masonry and stone elements.

Government & Institutional Buildings

Government & Institutional

Specified for federal buildings, state capitols, and universities to provide durable, low-maintenance joint protection.

Masonry Restoration

Masonry Restoration

Providing contractors a reliable solution for extending sealant life and ensuring a durable seal in repaired masonry joints.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Why Architects & Restoration Specialists Choose Weathercap

Proven on National Landmarks

Trusted for preserving America's most iconic structures, including the Washington Monument and U.S. Supreme Court. Our system meets the highest standards.

Patented Joint Protection

Our unique soft lead cap system (U.S. Patent 6991400) is engineered to accommodate building movement, extending sealant life and preventing moisture penetration.

GSA Specified Solution

Officially referenced in the U.S. GSA's Historic Preservation Technical Procedures, ensuring compliance and reliability for government and institutional projects.

Get a Quote for Your Masonry Project

Contact our team for technical information, sizing guidance, and pricing. We'll provide the documentation you need to specify and order the right joint protection system.

Contact Us Today

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