Inpro Exterior Expansion Joints: Key Features and Benefits

Weathercap® covers and protects the sealant from environmental exposure, prolonging its life and preventing margin checking. Its soft lead construction remains flexible, creeping into new joint configurations during building movement to maintain a continuous, weather-resistant seal where sealant alone might fail.

Type A caps have a flat configuration and are designed for joints where masonry units are in the same plane, such as on the top of copings or lintels. Type B caps have a 90-degree cove configuration, making them ideal for right-angle joints, like where a cornice meets a wall.

Yes, Weathercap® is suitable for both new construction and historic restoration. The system provides long-term protection for masonry joints, preventing future moisture issues. The A-2 Type A cap is specifically designated for new-construction installation, while other types can be used based on joint geometry.

The system is made of soft lead, which has a low elastic modulus. This allows the cap to remain flexible and slowly 'creep' or deform to accommodate joint expansion and contraction without tearing or losing its seal. This protects the less-flexible sealant underneath from stress and failure.

Yes, Weathercap® products can be painted to match surrounding masonry for aesthetic purposes. If left unpainted, the soft lead surface will naturally oxidize to a neutral grey color that blends in well with most stone and masonry, providing a seamless appearance.

We offer a range of stock sizes in both Type A (flat) and Type B (cove) configurations to fit joint sizes from under 3/8 inch up to 1 1/2 inches. All stock products are supplied in 6-foot lengths. Custom and larger sizes can also be manufactured upon request for unique project requirements.