Expansion Joint Pipe 720: Types and Applications

Type A caps have a flat configuration and are used for joints between masonry units on the same plane, such as on copings or lintels. Type B caps have a 90-degree cove shape for protecting right-angle joints, like where a window sill meets a wall or at cornices.

The system is ideal for historic masonry preservation and new construction. Common applications include protecting joints on parapets, copings, cornices, belt courses, window and door frames, entrance steps, and other projecting architectural stone or masonry elements.

By covering the sealant, it shields it from UV radiation, weather, and physical stress. Its soft lead construction also absorbs movement and 'creeps' into new joint configurations, reducing the strain on the sealant itself and preventing premature failure or margin checking.

Yes, absolutely. While widely used in historic restoration, the system is also specified for new construction to ensure long-term durability of masonry joints. The A-2 Type A cap, for example, is specifically designated for new-construction installation.

WEATHERCAP® products are made from a soft lead composition. This material is chosen for its flexibility, durability, and low elastic modulus, which allows it to accommodate building movement without failing. It naturally oxidizes to a neutral grey that blends in with masonry.

All WEATHERCAP® products, both stock and custom sizes, are supplied in standard 6-foot lengths. This allows for easy transportation and field cutting to fit specific joint requirements on the job site. Most orders are shipped within 48 hours.