Watertight Shower Curb Kit with ABS Central Bonding Flange, Stainless Steel Grate, Cuttable Shower Curbs, Pan Slope

Build a Durable, Watertight Shower the Easy Way

Upgrade your bathroom with this 48"x72" Watertight Shower Curb Kit—designed for professionals and DIYers who demand reliability, precision, and lasting performance. Engineered to create a completely waterproof shower base, this kit includes all essential components for a seamless installation and superior drainage.



Premium EPS Shower Tray for Perfect Drainage

The pre-sloped shower tray is made from high-pressure EPS foam board, offering excellent strength and easy handling. Its 4" ABS central bonding flange ensures smooth water flow into the drain, while the 5° slope from all sides prevents pooling. The surface features a water-impermeable membrane for strong mortar adhesion.


Complete Drainage System with Stainless Steel Grate

This kit includes a 4" stainless steel grate with a gravity-seal design that prevents blockages while maintaining optimal flow. The central ABS flange fits standard 2" pipes, ensuring compatibility with most bathroom builds.


Customizable Cuttable Shower Curbs

Two cuttable shower curbs (48" x 4.5" x 6") made from XPS extruded board allow easy trimming to fit your exact shower dimensions. They’re lightweight yet durable, ensuring long-term performance.


Waterproof Membrane & Corner Seals

For total moisture protection, the kit includes two rolls of HDPE waterproof membrane—one small (5" x 32.8 ft) and one large (3.3 ft x 32.8 ft). Four inside corners and two outside corners are pre-cut for faster installation.


Bonus Stainless Steel Trowel

Unlike most kits, we provide a square-toothed stainless steel trowel, ensuring an even mortar spread for superior adhesion between the membrane and substrate.


Effortless Installation

With all components included, installing this shower curb kit is straightforward. Simply use unmodified thin-set mortar for a secure, watertight fit. Perfect for both new construction and bathroom remodels.

This 48"x72" Watertight Shower Curb Overlay with ABS Central Bonding Flange is the complete solution for creating a waterproof, low-maintenance, and professional-grade shower floor.