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HardCurb®

A KBRS HardCurb® Prevents Leaks and Tile Failure.

One of the most critical components of a tile shower is the curb. If not properly constructed (and most are not), then it is guaranteed that you will have damaging leaks and tile failure. A KBRS HardCurb® is engineered to prevent these failures from occurring.

A KBRS HardCurb® is Self-Sealing.

Glass shower enclosure mounting hardware must be anchored (screwed) to both the walls and the shower curb in order to safely secure the glass assembly. This is especially true with heavy-glass shower enclosures. Traditional shower curbs, constructed from wood or mortar, and most prefabricated foam curbs, are not designed to receive the required anchoring hardware without causing leaks. A KBRS HardCurb® has a self-sealing anchoring layer that automatically seals around the screws when penetrated, and securely holds the screws in place.

  • Easy Installtion
  • Lightweight Design
  • Installs with Common Modified Thin-set
  • Custom Sizes Available
  • Self-Sealing Anchoring Layer
  • Cut-to-Fit in the Field as Required
  • Inhibit the Growth of Mold and/or Mildew
  • Solid Construction - No Void

The HardCurb® is one of our most innovative products. It's PVCore™ "cap" provides and "anchorig layer" for the mechanical anchors required when installing the mounting hardware for glass shower enclosures. It is a great alternative to traditional shower curbs built from wood, that are notorious for absorbing moisture. Works with our shower pans or mudbed applications.

The quality of every HardCurb® from KBRS goes beyond durable materials and state-of-the-art construction. It is also easy to install. Designed specifically for use with the ShowerSlope™, just cut it to the length you need, and it is ready to be installed using common modified thin-set.While all KBRS Shower Systems are created for anyone with a moderate skill level. A KBRS HardCurb® can also be cut-to-fit in the field. 

Mud-Bed or Prefabricated Shower Pans.

HardCurb® can be used with a traditional sloped-mortar tile shower pan, or any brand prefabricated pan (we recommend our pans….of course). No matter which method you choose to construct your tile shower pan, you should always install a self-sealing HardCurb® manufactured by KBRS.


HardCurb® Written Installation
HardCurb® Schematics
HardCurb® Data Sheet

Standard Sizes

The KBRS HardCurb® is engineered to be self-sealing. Starting with a UL Certified geofoam core, the top is laminate with a solid 1/2" PVCore™ self-sealing composite. A HardCurb® is encapsulated in KBRS ShowerSeal® seamless waterproofing membrane and is ready to be tiled. The 4" X 4" KBRS HardCurb® is available in a 61" standard length. Custom sizes available upon request.