SHOWER CURBS & RAMPS FREQUENTLY ASKED QUESTIONS

The core material of a HardCurb® is UL® Certified expanded polystyrene (Type XV-EPS 60) geofoam. The self-sealing anchoring cap is a laminated combination of dense composite and polyurethane. A HardCurb® is encapsulated in ANSI 118.10 compliant waterproofing membrane.

Yes! The KBRS HardCurb® shower curb can be cut-to-fit on site to easily adjust as needed for your shower.

Any quality "polymer modified" thin-set will do just fine. Do not use a premixed thin-set (i.e.... water already added). A premixed thin-set that comes in a bucket with water already added will not cure properly. Remember: No premix! Always add your own water! Different terms for modified thin-set include: modified thin-set, modified thin set with a latex additive, fortified thin-set, polymer modified thin-set, polymer fortified blended thin-set. The thin-set must meet or exceed ANSI A118.4 and ANSI Al18.11 requirements when mixed with water.

Three of the most recognized brands:
1. Custom Building Products: usually found at The Home Depot. (Product Names: Versa Bond, Fortified, FlexBond Fortified and their elastic membrane is called RedGard)
2. Laticrete: usually found at The Home Depot, Lowe's and other tile suppliers. (Product Names: Laticrete 254 Platinum and their elastic membrane is called Hydro Ban).
3. Mapei: usually found at The Home Depot, Lowe's, Daltile and other tile suppliers (Name of product: Ultra Flex 2 and their elastic membrane is called Aqua Defense)

Typically, professional installers use boxes of tile or buckets of water to supply a uniform weight to the shower base and curb threshold until the thin-set is cured. Following this procedure will result in a "rock-solid" installation. Also, be sure to securely tighten the shower drain's "clamping ring" to the drain body in the sub-floor as recommended in the installation instructions.

Absolutely! You can order additional curbs on its own to integrate in your linear shower project. Our tile shower kits include a pre-sloped adjustable shower pan, HardCurb® shower curb, shower drain, and waterproofing products for up to 50 s/f coverage. Shop All Shower Accessories ▸

If your sub-floor is structurally sound (no rotting...etc.) and level (very important), then applying thin-set directly to the sub-floor is okay. However, we do not recommend applying thin-set directly to particleboard. For use interior or exterior.

Suitable Substrates:

• Any substrate that you would normally build a tile shower on that is level: concrete, approved plywood surface, etc.
• Deflection of substrate not to exceed 1/360th of the span 1/2 inch (12 mm) in 15 feet (4.6 m) in accordance with ANSI A108.01-2.3
• Allow for live and impact load as well as dead load weight of pan, tile and setting beds

The KBRS Shower Ramp is manufactured under strict ICC-ES quality-control conditions. The core material of the KBRS Ramp is UL® Certified EPS (expanded polystyrene) geofoam (Type XV-EPS 60). The geofoam core is sandwiched between layers of epoxy infused E-Glass and fiberglass mesh. The E-Glass provides strength, and the mesh provides an increase in the bonding surface-area and bond coat stabilization. The KBRS Ramp has a 1/4” leading edge and a 8” RUN to a 2” trailing edge. The average compression strength is 118 psi per ASTM D1621.

Yes, the Shower Ramp can be installed easily by following a few simple steps. Dry fit KBRS Shower Ramp to ensure proper size (cut-to-fit, if required). Using trowel, apply an approved thin-set to substrate as if laying a tile. Lay KBRS Shower Ramp in place and firmly embed into thin-set. Apply approved ShowerSeal® Polyurethane Sealant (or equal) to all gaps and joints. Apply waterproofing membrane as required.

Yes! The KBRS Shower Ramp can be cut-to-fit on site to easily adjust as needed for your shower.

Yes, the KBRS Shower Ramp can be used in a mud bed installation with positive side waterproofing, or with our KBRS ShowerSlope™ shower pan. For use interior or exterior.

Suitable Substrates:

• Any substrate that you would normally build a tile shower on that is level: concrete, approved plywood surface, etc.
• Deflection of substrate not to exceed 1/360th of the span 1/2 inch (12 mm) in 15 feet (4.6 m) in accordance with ANSI A108.01-2.3
• Allow for live and impact load as well as dead load weight of pan, tile and setting beds

Yes! We can custom manufacture a Shower Ramp attached to a Tile-Basin®. We can also add a radius on a custom ramp per your specifications, or you can order a Shower Ramp separate to install with your shower pan. The KBRS Shower Ramp can be cut-to-fit on site using the same tools as you would to cut a KBRS shower curb.

Order Custom ▸

Absolutely! You can either order a ShowerSlope™ and a Shower Ramp as two items, or you can order a Shower Ramp on its own, or you can order a custom ShowerSlope™ with a custom ramp integrated into the shower pan. Our tile shower kits include a pre-sloped adjustable shower pan, HardCurb® shower curb, waterproofing products and a standard shower drain.

Order Custom ▸

Our standard Tile-Basin® products come with a standard curb attached, but you can order a custom Tile-Basin® with a ramp attachment.

Order Custom ▸

Any quality "polymer modified" thin-set will do just fine. Do not use a premixed thin-set (i.e.... water already added). A premixed thin-set that comes in a bucket with water already added will not cure properly. Remember: No premix! Always add your own water! Different terms for modified thin-set include: modified thin-set, modified thin set with a latex additive, fortified thin-set, polymer modified thin-set, polymer fortified blended thin-set. The thin-set must meet or exceed ANSI A118.4 and ANSI Al18.11 requirements when mixed with water.

Three of the most recognized brands:
1. Custom Building Products: usually found at The Home Depot. (Product Names: Versa Bond, Fortified, FlexBond Fortified and their elastic membrane is called RedGard)
2. Laticrete: usually found at The Home Depot, Lowe's and other tile suppliers. (Product Names: Laticrete 254 Platinum and their elastic membrane is called Hydro Ban).
3. Mapei: usually found at The Home Depot, Lowe's, Daltile and other tile suppliers (Name of product: Ultra Flex 2 and their elastic membrane is called Aqua Defense)

Typically, professional installers use boxes of tile or buckets of water to supply a uniform weight to the shower base and ramp or curb threshold until the thin-set is cured. Following this procedure will result in a "rock-solid" installation. Also, be sure to securely tighten the shower drain's "clamping ring" to the drain body in the sub-floor as recommended in the installation instructions.

Standard or stock items may be returned within 30 days of purchase if purchased directly from KBRS, Inc - by internet, phone or fax. Standard or stock item(s) may be returned for credit or refund of the purchase price paid, less a 15% restocking fee. Custom product(s) or special orders are NOT eligible for return, credit or refund at any time; unless the product is received defective or the return is a direct result of a KBRS, Inc. error. To return an item you must first contact us via phone (866) 912-3211, or email returns@kbrsinc.com to obtain an RMA number. Item(s) must be returned in original packaging and return shipping must be paid by you, it is strongly recommended you insure your return package as KBRS will not be able to refund an item that arrives damaged and is not in re-stockable condition.
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Currently we do not provide shipping labels to have our products returned to us. Customers are required to return their products with the shipper of their choice. It is also recommended you insure your returned items, to protect form damages that may occur from shipping. KBRS will not be able to offer refunds on products that are returned damaged. All returns must be sent back to the warehouse in re-stockable conditions.

Since all of your products are packaged separately, it is common for items to get separated in the shipping process. Usually the missing product will arrive the next business day. If the product does not arrive by the end of the next business day, please contact us for a complete resolution.