GSA Specified for Historic Preservation certified

GSA Specified for Historic Preservation

U.S. Patented System certified

U.S. Patented System

Registered U.S. Trademark certified

Registered U.S. Trademark

Masonry Joint Protection Systems

Explore our patented masonry joint protection systems. These soft lead caps are designed to work with sealants, extending their life by protecting them from environmental stress and building movement. Ideal for historic restoration and new construction, our systems ensure durable, weather-resistant seals for copings, cornices, and window perimeters.

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 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 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 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 Type A Flat Joint Cap
WEATHERCAP Corner and Fillet Joint Protection
WEATHERCAP Custom and Large-Size Masonry Joint Caps
WEATHERCAP Masonry Moisture Penetration Protection
WEATHERCAP Glass Block Perimeter Joint Protection
WEATHERCAP Horizontal and Vertical Masonry Joint Protection
WEATHERCAP New Construction Masonry Joint Protection
WEATHERCAP Cornice and Belt Course Joint Protection
WEATHERCAP Window and Door Lintel 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
  • Outer coverage approx. 2 in wide
  • Robust 2.5 lb/ft soft lead construction
WEATHERCAP B-8 Type B 90° Cove Cap

WEATHERCAP B-8 Type B 90° Cove Cap

  • Heavy-duty Type B cap for joints to 1 1/4 in
  • Wide 1 3/4 in outer coverage capacity
  • Perpendicular anchorage, 2.5 lb/ft weight
WEATHERCAP A-6 Type A Flat Joint Cap

WEATHERCAP A-6 Type A Flat Joint Cap

  • Type A flat cap for joints up to 1 1/4 in
  • Outer coverage approx. 1 1/2 in wide
  • Durable 0.83 lb/ft lead construction
WEATHERCAP B-4 Type B 90° Cove Cap

WEATHERCAP B-4 Type B 90° Cove Cap

  • Type B cove cap for joints under 5/8 in
  • Covers approx. 3/4 in outer joint width
  • Flexible lead resists corrosion and mold
WEATHERCAP A-2 Type A Flat Joint Cap

WEATHERCAP A-2 Type A Flat Joint Cap

  • Compact Type A cap for joints under 3/8 in
  • Lightweight 0.26 lb/ft construction
  • New-construction stock item, 6-ft lengths
WEATHERCAP B-3 Type B 90° Cove Cap

WEATHERCAP B-3 Type B 90° Cove Cap

  • Type B cove cap for joints under 1/2 in
  • Horizontal or perpendicular anchorage option
  • Lightweight 0.22 lb/ft, 6-ft lengths

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Frequently Asked Questions

What is a masonry joint protection system?

It is a soft lead cap installed with sealant in masonry joints. It acts as a protective cover, shielding the sealant from weather and UV exposure while accommodating building movement. This dual function significantly extends the life and effectiveness of the joint seal, preventing moisture penetration and costly repairs.

How does the WEATHERCAP system work?

What are the main types of WEATHERCAP?

Can WEATHERCAP be used in new construction?

Is the lead material safe to handle?

Can WEATHERCAP be painted?

In what lengths is WEATHERCAP supplied?

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 and restoring vulnerable masonry joints on landmark buildings, monuments, and historic structures.

Architectural Masonry

Architectural Masonry

Ensuring weather-tight seals on architectural details like copings, cornices, balustrades, and water tables.

Government & Institutional

Government & Institutional

Specified for long-term durability on federal buildings, state capitols, universities, and other public structures.

New Construction

New Construction

Proactively protecting masonry joints in new commercial and institutional buildings to prevent future failures.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Why Restoration Specialists Choose Weathercap

Proven on National Landmarks

Our systems are trusted to protect America's most iconic structures, including the Washington Monument, U.S. Supreme Court, and Smithsonian Institution.

Patented Protection System

The patented soft lead design (U.S. Patent 6991400) provides a unique, flexible seal that accommodates building movement and extends sealant life.

GSA-Specified Solution

WEATHERCAP is specified in U.S. General Services Administration (GSA) Historic Preservation Technical Procedures, affirming its quality and suitability.

Get Technical Specs & Sizing Guidance

Contact our team for technical information, CAD drawings, sample specifications, and support for your restoration or new construction project.

Contact Us Today

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