--- title: Watts RD-100-CP Promenade-Top Roof Drain Specs description: Find Watts RD-100-CP promenade-top roof drain specifications, outlets, dome types and accessories. --- Search our inventory of drains, drain parts, safety and roofing equipment, and accessories. [Shop Now](https://hy-techroof.com/products/). - [ About ](https://www.hy-techroof.com/about-hy-tech/) - [ Contact ](https://www.hy-techroof.com/contact-hy-tech/) - - [![Hy-Tech Roof Products](https://resources.hy-techroof.com/hubfs/Logos/Hy-Tech%20Logo_rgb_maroon_480.png) ](https://www.hy-techroof.com) [**](https://www.hy-techroof.com/login.php) [**](https://www.hy-techroof.com/cart.php) ** ** [![Hy-Tech Roof Products](https://resources.hy-techroof.com/hubfs/Logos/Hy-Tech%20Logo_rgb_maroon_480.png) ](https://www.hy-techroof.com) [**](https://www.hy-techroof.com/cart.php) - - # Watts RD-100-CP Promenade-Top Roof Drain Specs *Dimensional data is subject to manufacturing tolerances and change without notice.*   ### **![watts-rd-100-cp.png](https://cdn11.bigcommerce.com/s-7wb5vs0sib/product_images/uploaded_images/watts-rd-100-cp.png "watts-rd-100-cp.png")** **Specifications:** The Watts Drainage RD-100-CP is an epoxy-coated, cast-iron roof drain with flashing clamp. It includes an integral gravel stop; 12-3/4 x 12-3/4 in. square, epoxy-coated, ductile, iron, heel-proof promenade top; and no hub (standard) outlet. 41 sq. in. free area. **Load rating:** XHD — Safe live load 7500 to 10000 lbs. The load classifications are in accordance with the American National Standards ASME A112.21.1M. These categories are given as a guide only. Please consult factory | **Pipe Size (in.)** | | --- | | 2" (-2) | | 3" (-3) | | 4" (-4) | | 5" (-5) | | 6" (-6) |   ### Outlet Types - No-Hub Outlet (-NH) - Push On (-P) - Threaded Outlet (-T) - Inside Caulk (-X) ### Optional Body Material - PVC Body w/ Socket Outlet (-60) - ABS Body w/ Socket Outlet (-61) ### Accessories - All Nickle Bronze Top (-1) - Sump Receiver (-B) - Sediment Bucket (-5) - Underdeck Clamp (-D) - Vandal Proof Top (-6) - Adjustable Extension Flange (-F) - Hinged Grate (-9) - Side Outlet (2, 3, 4-in. only) (-SO) - Galvanized Body and Flashing Clamp (-13) - Buy American Compliant (-US) - 4-in. Stainless Steel Perforated Extension (-85) [![New Low Josam 21500 Drain Ring Pricing](https://no-cache.hubspot.com/cta/default/10783/f0dfd59f-fed0-4ce5-930a-01b19c581cd9.png)](https://cta-redirect.hubspot.com/cta/redirect/10783/f0dfd59f-fed0-4ce5-930a-01b19c581cd9) - [Drains](https://www.hy-techroof.com/products/drains/) - [Zurn](https://www.hy-techroof.com/manufacturers/zurn/) - [Smith](https://www.hy-techroof.com/manufacturers/j-r-smith/) - [Josam](https://www.hy-techroof.com/manufacturers/josam/) - [Wade](https://www.hy-techroof.com/manufacturers/wade/) - [Marathon](https://www.hy-techroof.com/manufacturers/marathon/) - [Olympic](https://www.hy-techroof.com/manufacturers/olympic/) - [Equipment](https://www.hy-techroof.com/products/equipment) - [Garlock](https://www.hy-techroof.com/manufacturers/garlock/) - [Leister](https://www.hy-techroof.com/manufacturers/leister/) - [All Seasons / Grizzly](https://www.hy-techroof.com/manufacturers/all-seasons-equipment/) - [Hennes-Johnson](https://www.hy-techroof.com/manufacturers/hennes-johnson/) - [Gator](https://www.hy-techroof.com/manufacturers/gator-roofing-equipment/) - [Roofmaster](https://www.hy-techroof.com/manufacturers/roofmaster-products-company/) - [Safety](https://www.hy-techroof.com/products/safety) - [Leading Edge](https://www.hy-techroof.com/manufacturers/leading-edge-safety/) - [Tie Down Manufacturing Ingenuity](https://www.hy-techroof.com/manufacturers/tie-down-manufacturing-ingenuity/) - [Malta Dynamics](https://www.hy-techroof.com/manufacturers/malta-dynamics/) - [Resources](https://resources.hy-techroof.com) - [Account](https://www.hy-techroof.com/login.php) - [The Drain Wizard](https://resources.hy-techroof.com/ask-the-drain-wizard) - [FAQ](https://resources.hy-techroof.com/faq) - [Blog](https://resources.hy-techroof.com/blog) - [Roof Drain Specs](https://resources.hy-techroof.com/roof-drain-specs-and-diagrams) - [Video Library](https://resources.hy-techroof.com/video-library) - [About](https://www.hy-techroof.com/about-hy-tech/) - [Contact Us](https://www.hy-techroof.com/contact-hy-tech/) - [About Hy-Tech](https://www.hy-techroof.com/about-hy-tech/) - [Service and Repairs](https://www.hy-techroof.com/service-and-repairs/) [800-635-0384](tel:8006350384) **Hy-Tech Products **10035 Broadview Road, Broadview Heights, OH 44147 [info@hy-techroof.com](mailto:info@hy-techroof.com) [800-635-0384](tel:8006350384) **Hy-Tech Products **10035 Broadview Road, Broadview Heights, OH 44147 [info@hy-techroof.com](mailto:info@hy-techroof.com) © 2026 Hy-Tech Products, Inc. All rights reserved. [ Terms of Use ](https://resources.hy-techroof.com/terms) - -