Metal Caps for Chimneys: Buy Quality & Durable Options

The best protection addresses all vulnerabilities. A standard cap covers the flue opening, while our WEATHERCAP® system protects the masonry joints in the chimney stack and crown. It's a soft lead flashing that works with sealant to create a durable, flexible seal, preventing cracks and leaks in the brick or stonework.

Replacing a standard flue cap can be a DIY task if you are comfortable working at heights. However, installing specialized masonry joint protection like WEATHERCAP® requires professional expertise. It should be installed by experienced masonry contractors to ensure proper integration with the sealant for a lasting, weatherproof bond.

A standard cap's lifespan depends on the metal type. For ultimate masonry joint protection, our WEATHERCAP® soft lead system offers exceptional longevity. It accommodates building movement and protects the underlying sealant for decades, a durability proven on numerous national historic landmarks.

WEATHERCAP® is manufactured from soft lead. This material is specifically chosen for its unique properties: it is highly resistant to corrosion and mold, and it has a low elastic modulus. This allows it to remain flexible and move with the building's natural settlement and expansion, preventing the sealant from failing.

The two types handle different joint configurations. Type A is a flat cap designed for joints between masonry units that are on the same plane, like the top of a coping or a lintel. Type B is a 90-degree cove cap used for right-angle joints, such as where a window sill meets a vertical wall or a water table joins a parapet.

Absolutely. While it is a proven solution for historic preservation, WEATHERCAP® is also specified for new construction projects. Installing it from the outset provides long-term protection for masonry joints, extending the life of the sealant and preventing costly moisture-related damage for the entire life of the building.