Zip-Up Underdeck® Drainage System Main Rail

ZipUP UnderDeck® Main Rail – The Backbone of a Seamless Ceiling System

The ZipUP UnderDeck® Main Rail is the central support piece in the ZipUP UnderDeck® Drainage System. Designed to secure and align ceiling panels, this structural component provides a clean, level framework that helps create a watertight under-deck ceiling. Whether you're enclosing a patio or creating dry storage space, the Main Rail ensures everything stays in place and performs reliably.

Core Benefits

• Essential Support: Anchors the entire panel system, keeping ceiling panels firmly aligned and secure.

• Easy Snap-In Design: Allows panels to lock into place quickly for a fast, efficient installation.

• Moisture Management: Works with the overall system to create a pitched surface that channels water away.

• Durable Build: Made from tough PVC for long-lasting performance in outdoor conditions.

• Low Profile Appearance: Helps create a clean, streamlined ceiling under your deck.

Product Specifications

Installation Notes

• Positioning: Mount perpendicular to joists, spacing according to panel layout.

• Combines With: Designed to work seamlessly with ZipUP® Panels, Pitch Rails, Wall Trim, and Seam Trim.

• Versatility: Suitable for both new construction and retrofit deck projects.

The ZipUP UnderDeck® Main Rail is essential for bringing structure and simplicity to your under-deck drainage solution. With two length options and easy installation, it’s a smart, adaptable choice for any covered outdoor space.