Flow-Thru Gravel Stop & Drain Bar

Flow-Thru Gravel Stops and Drain Bars provide a method to terminate the roof, and allow water to flow over the edge, while retaining gravel or stone ballast on the roof. Most commonly used at a gutter or low roof transitions, Flow-Thru Gravel Stop and Drain Bar are furnished in 12’-0” lengths of mill or pre-finished aluminum (other architectural metals available upon request) that is perforated or slotted for proper water flow and gravel or ballast retention.

Job-Specific Fabrications:

In addition to our full line of stock standard items, ATAS International offers a wide range of custom fabrication capabilities to fit any project’s needs. Radiused sections and accessories including miters, T-miters, end caps, and end closures are available for all perimeter edge products. Options include fabricated and sealed or welded and PVDF painted to match. Available in over 40 PVDF stock colors, our products come equipped with industry expertise and technical support, including design and development assistance, product specification guidance, and installation support.

CAD Details

Details provided allow for typical expansion and contraction values of the metal cladding materials as provided by ATAS International, Inc only. Allowance must be made for additional sub-structure movement based upon materials used and overall project design.

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ATAS Expands its Portfolio with Metalwërks Architectural Plate Systems

On Tuesday, March 18, 2025, ATAS International, Inc., a recognized leader in the metal panel industry, expanded its portfolio by acquiring the assets of Metal Sales & Service, Inc., including the Metalwërks® line of architectural metal plate systems. Metalwërks is recognized industry-wide for high performance metal plate exterior facade systems, integrated curtain wall components, and custom architectural features, including column covers and engineered screen wall systems. They have offices in Kennett Square, PA and manufacturing in Elkton, MD.