CertainTeed Flintlastic® SA Cap is a self-adhered modified bitumen cap sheet designed for use in low-slope roofing systems where dependable waterproofing and simplified installation are priorities. It is engineered as the final surfacing layer in the Flintlastic SA system, helping provide long-term protection against weather exposure while contributing to a finished, professional roof appearance.

This cap sheet is constructed with a strong polyester-reinforced core that is saturated and coated with SBS-modified bitumen. This combination is designed to provide flexibility, durability, and strong adhesion performance across a wide range of temperatures and installation conditions, helping the membrane maintain integrity through seasonal changes.

One of the key features of the system is its self-adhering installation method, which eliminates the need for open flames or hot asphalt during application. Instead, the membrane is installed using pressure and rolling techniques to activate adhesion, helping create a continuous, watertight surface with reduced installation hazards and disruption.

Flintlastic SA Cap is designed to perform well under long-term weather exposure, including UV radiation, moisture, and temperature extremes. Its reinforced structure supports dimensional stability while allowing the membrane to remain flexible enough to accommodate normal roof movement.

The product is available in a range of color options, including blends designed to coordinate with popular shingle styles as well as reflective surfacing options that can support improved solar performance. This allows it to be used on a variety of low-slope roofing designs where aesthetics and energy performance are both considerations.

When installed as part of a complete Flintlastic SA system, the cap sheet contributes to a multi-layer roofing assembly that enhances waterproof protection and overall system durability. It is commonly used in commercial buildings, residential low-slope sections, and architectural roof transitions.

Overall, Flintlastic SA Cap delivers a balance of installation efficiency, weather resistance, and long-term performance, making it a reliable solution for modern self-adhered modified bitumen roofing systems.