Products : Surface Prep : Pre-Mixed : SimplePrep® Pre-Mixed Floor Patch

SimplePrep® Pre-Mixed Floor Patch

Repairs holes and cracks in concrete and plywood floors prior to installing tile or other flooring. Smooths and fills minor dips and imperfections.

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Key Features

  • Ready to use
  • No mixing
  • Fills minor dips and imperfections


Conformance to Building Codes

Installation must comply with the requirements of all applicable local, state and federal code jurisdictions.

Environmental Consideration

Custom® Building Products is committed to environmental responsibility in both products produced and in manufacturing practices. Use of this product can contribute to LEED® certification.

Suitable Substrates

  • For interior use only
  • Concrete
  • WonderBoard®, cement backerboards
  • Ceramic tile
  • Exterior Grade Plywood
  • Vinyl flooring

General Surface Prep

USE CHEMICAL-RESISTANT GLOVES, such as nitrile, when handling product.

Surfaces must be structurally sound, clean, dry and free from grease, oil, dirt, curing compounds, sealers, adhesives or any other contaminant that would prevent a good bond. Glossy or painted surfaces must be sanded, stripped and cleaned of waxes, dirt or any contaminants. Concrete must be cured 28 days and accept water penetration. Concrete must be free of efflorescence and not subject to hydrostatic pressure. Concrete slabs should have a broomed or brushed finish to enhance the bond. Plywood flooring including those under resilient flooring must be structurally sound and meet all ANSI and deflection requirements. For questions about proper subfloor installation, call Technical Services. Smooth concrete surfaces, existing glazed tile, terrazzo, or polished stone should be roughened or scarified. Sheet vinyl must be well-bonded and stripped of old finish. Roughen the surface by sanding or scarifying, rinse and allow to dry. Expansion joints should never be bridged with setting material. Do not sand flooring materials containing asbestos. Ambient temperature, surfaces and materials should be maintained at a temperature above 50° F (10° C) or below 100° F (38° C) for 72 hours.

Health Precautions

Avoid eye contact. If eye contact occurs, flush with water for 15 minutes. Consult a physician immediately. Do not take internally. Keep out of reach of children.

Limitations to the Product

  • Do not use as a wear surface.
  • Use on non-porous surfaces may lead to an extended drying time.

Bonding to Plywood Surfaces

Plywood floors, including those under resilient flooring, must be structurally sound and must meet all ANSI A108.01 Part 3.4 requirements. See TCNA F150. For questions about proper subfloor installation, call Custom® Building Products.

Application of Product

Stir contents thoroughly. Lightly dampen the area to be patched with clean water. Use smooth edge of trowel or putty knife to apply compound. May be smoothed or feather edged. Fills greater than 1/4" (6 mm) deep require two or more applications. Remove excess with a cloth.

Drying Time

Wait 4 hours before tiling, longer for deeper fills.

Cleaning of equipment

Quickly clean tools with warm soapy water.


Keep from freezing. Close container after each use.

Product Maintenance

Do not use as a wear surface.

Ordering Information


  • 1 quart (.946 L) pail
  • 1 gallon (3.78 L) pail

Warranty Information

Product Warranty

Obtain the applicable LIMITED PRODUCT WARRANTY at or send a written request to Custom Building Products, Inc., Five Concourse Parkway, Atlanta, GA 30328, USA. Manufactured under the authority of Custom Building Products, Inc. © 2017 Quikrete International, Inc.

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