Products : Grout : Single Component® Grout : Fusion Pro® Single Component® Grout

Fusion Pro® Single Component® Grout

Fusion Pro® - the stain proof grout.*  This professional grade grout features unsurpassed stain resistance with no sealing required. Its Single Component® formula is ready to use, color consistent and easy to spread and clean. Fusion Pro can be installed in commercial and residential environments, interiors and exteriors, and on walls and floors. Its patented formulation can be applied on all tiles and has built-in Microban antimicrobial product protection. U.S. Patents 8,349,068, 8,357,238, 8,876,966.  *See warranty for details.

  WHERE TO BUY Not all products are sold at all stores. Please call the distributor to ensure product availability.
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Key Features

  • Stain proof and color perfect
  • Unsurpassed stain resistance
  • Never needs sealing
  • Easy to spread and clean
  • Ultimate color consistency


  • Use to fill joint widths 1/16" to 1/2" (1.6-13 mm)
  • May be used for both floor and wall installations
  • Exterior and interior applications.
  • Commercial and residential applications
  • Countertops, tub surrounds, showers and high traffic areas


  • Stain resistant grout
  • No sealing required
  • Ready to use
  • Hard, durable grout joints
  • No efflorescence
  • Crack resistant
  • MicroBan® antimicrobial product protection

Color Choices

Color Choices

Sample colors shown may vary from actual grout. Final installed shade can differ based on tile type, porosity, job site conditions and finishing techniques.









#382 BONE


#122 LINEN














#186 KHAKI


#156 FAWN






#105 EARTH

















































Meets the performance criteria of A118.7 and A118.3.

Composition of Product

Advanced polymers with inorganic fillers and pigments.

Environmental Consideration

Custom® Building Products is committed to environmental responsibility in both products produced and in manufacturing practices. Use of this product can contribute towards LEED® v3 certification:

  • Up to 2 points towards MR Credit 5, Regional Materials
  • Up to 1 point towards IEQ Credit 4.1, Low-Emitting Materials – Adhesives & Sealants

Suitable Tile Types

  • Vitreous, semi-vitreous or non-vitreous tile: ceramic, mosaic, quarry, cement body tile
  • Impervious porcelain and glass tile
  • Cement-based precast terrazzo
  • Polished, natural stone
  • Groutable luxury vinyl tile

General Surface Prep

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

Tiled surface and joints must be clean, and adhesives must be dry. When grouting both vertical and horizontal substrates together, protect horizontal substrate from excess wash water that may fall during the cleaning of grout on walls by covering the floor area prior to grout installation on the walls. 

Health Precautions

Contains ethylene glycol, 2-butoxy ethanol and acrylic latex. Avoid contact with eyes and skin. Do not take internally. CAUTION: KEEP OUT OF REACH OF CHILDREN. Use in well-ventilated areas. Wear chemical resistant gloves and eye protection. FIRST AID: If eye or skin contact, flush thoroughly with water. In case of respiratory tract irritation, move person to fresh air. If irritation persists, seek medical attention. If ingested, do not induce vomiting. Seek medical attention. This product contains a chemical or chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Limitations to the Product

  • Should not be installed when ambient or surface temperature is lower than 50° F (10° C) or above 90° F (32° C).
  • Some ceramic, glass, marble or stone tiles can be scratched or damaged by the silica aggregate filler. Perform a test on a small area prior to use.
  • Tile or stone with high absorption, surfaces that are porous or rough, textured surfaces and some types of porcelain tile may require sealing prior to grouting to prevent possible staining. See the General Surface Prep section for details.
  • Do not use Fusion Pro with irregularly shaped or spaced tile or stone, such as pebble stones, where joint widths or depths exceed 1/2".
  • Not for use in either industrial applications or in areas subjected to harsh or continuous chemicals, high heat or high-pressure cleaning. For heavy industrial tile installations, use CEG-IG 100% Solids Epoxy Grout.
  • Not for use over concrete slabs with high moisture emission rates.
  • Not for use in steam rooms or submerged applications (swimming pools, spas, water features and fountains).
  • Not for use in movement joints or changes of plane in the tile installation. In these areas us an appropriate caulk or sealant such as Commercial 100% Silicone Caulk or Polyblend® Ceramic Tile Caulk.

Mixing Procedures

Ready to use – no mixing required.

Application of Product

  • Pre-seal natural stones and porous or rough textured tile with Aqua Mix® Grout Release, Aqua Mix® Sealer's Choice® Gold or TileLab® SurfaceGard®.
  • Fusion Pro cures by evaporation. Ensure setting material has dried, substrate does not have a high moisture emission rate and work area has adequate ventilation.
  • Only spread for 3-4 minutes, typically 20 sq. ft. (1.85 m²) before cleaning grout off the tile surface. More can be spread in cool, damp conditions; less in hot, dry conditions.
  • Do not allow Fusion Pro to dry or skin over prior to final cleaning. If grout dries on surface during installation, lightly moisten and wait 2-4 minutes, then gently clean tile surface using sponge or white nylon scrubber.

Fusion Pro is a new technology grout with significant advantages over traditional grouts, requiring modified installation techniques to achieve best results. Do not apply or clean up this grout as typically done with cement or epoxy grout.

Lightly dampen tile surface before spreading. Use a medium to hard grout float to spread grout. Spread grout and fill joints for 3-4 minutes, typically 20 sq. ft. (1.85 m²) increments. More grout can be spread in cool, damp conditions; less in hot, dry conditions. Drag the edge of the float diagonally across the tile to remove excess grout while leaving the joints full. Cleaning of grouted area should begin immediately, before grouting next section.

With a lightly damp grout sponge held flat against the tile, apply even pressure and use a light, circular motion to loosen excess grout from the tile surface. Rinse the sponge and hold it flat against the tile face to gather and wipe off excess material. Shape joints full. Be sure to rinse sponge and change rinse water frequently to reduce grout haze.

Lastly, drag a lightly damp microfiber towel across the surface for final clean up. Do not allow Fusion Pro to dry or skin over prior to final cleaning. If grout dries on the surface, lightly moisten and wait 2-4 minutes, then gently clean the tile surface using a sponge (or a white nylon scrubber) to remove residue. If streaks or residue remain after 2 hours, use diluted Aqua Mix® Grout Haze Clean-Up, Aqua Mix® Heavy Duty Tile & Grout CleanerTileLab® Grout & Tile Cleaner or TileLab® Heavy Duty Stripper & Cleaner and clean with a sponge or scrub pad. Additional instruction and videos available online.

Curing of Product

Allow 24 hrs until light traffic, and 3 days at 70° F (21° C) and 50% relative humidity before intermittent water exposure. Lower temperatures and higher humidity will slow the cure times. Covering Fusion Pro immediately after grouting will extend the cure time. Grout should be allowed to cure 24 hours before covering with a highly-porous protective material to ensure a timely cure to protect the surface from other trades traffic. Lower temperatures and higher humidity will slow cure times. Exterior applications must be protected from rain, snow and other wet conditions for at least 7 days with temperature above 50° F (10° C). If inclement weather is expected, protect the work area with tenting at least 1 foot (30 cm) above the finished surface to allow air flow. Enclose and protect exterior installations and maintain >50° F (10° C)  temperatures for at least 72 hours for proper cure.

Sealing of Grout

Fusion Pro is a stain resistant grout.  Sealing is not necessary. Do not use solvent-based sealers with Fusion Pro.

Cleaning of equipment

Clean tools and hands with water before material dries.

Handling & Storage

Protect grout from freezing. If product freezes, return to room temperature and use as directed. Do not stir if partially frozen.

Product Maintenance

Clean with a neutral cleaner such as Aqua Mix AquaKleen, Aqua Mix Concentrated Stone & Tile Cleaner or Tilelab Grout & Tile Cleaner.

Ordering Information


  • All colors available in 1 gallon pails.
  • Select colors available in 1 quart pails.
  • Available in 40 standard colors.

Warranty Information

Product Warranty

Custom® Building Products warrants to the original consumer/purchaser that Fusion Pro® Single Component® Grout shall be free from color fading; staining; shrinkage cracking; mold growth within the product; and break down in wet environments due to defects in material and workmanship under normal and proper usage for a period of five (5) years following the date of original purchase. Custom's® sole liability under this warranty shall be limited to the replacement of the product. Some states, countries or territories do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty will not extend to any product which has been modified in any way or which has not been used in accordance with Custom's® printed instructions. Custom® makes no other warranties either expressed or implied. This warranty gives you specific legal rights, and you may have other rights that vary from state to state or from one country/territory to another. This warranty is not transferrable.

Also see our Fusion Pro Stain Proof, Color Perfect warranty here.

Warranty Duration

When Fusion Pro® Single Component® Grout is used as a part of a qualifying full installation system of CUSTOM products, the installation can qualify for up to a lifetime system warranty. CUSTOM will repair and/or replace, at its discretion, the affected area of the system. For more information, find details and limitations to this warranty at

Coverage Chart

Coverage will vary depending on the tile size and joint width. Average coverage per entire contents.


  Joint Width
Tile Size 1/16" (1.6 MM) 1/8" (3 MM) 3/16" (4.8 MM) 1/4" (6 MM) 3/8" (9.5 MM) 1/2" (13 MM)
1"x1"x1/4" (25 x 25 x 6 mm) 56 ft² (5.2 M²) 31 ft² (2.9 M²) 24 ft² (2.2 M²) 18 ft² (1.7 M²) 14 ft² (1.3 M²) 12 ft² (1.1 M²)
2"x2"x1/4" (50 x 50 x 6 mm) 107 ft² (9.9 M²) 56 ft² (5.2 M²) 41 ft² (3.8 M²) 30 ft² (2.8 M²) 22 ft² (2.0 M²) 19 ft² (1.8 M²)
6"x6"x1/4" (150 x 150 x 6 mm) 313 ft² (29.1 M²) 159 ft² (14.8 M²) 115 ft² (10.7 M²) 82 ft² (7.6 M²) 56 ft² (5.2 M²) 46 ft² (4.3 M²)
12"x12"x3/8" (300 x 300 x 9.5 mm) 414 ft² (38.5 M²) 208 ft² (19.3 M²) 141 ft² (13.1 M²) 106 ft² (9.8 M²) 71 ft² (6.6 M²) 53 ft² (4.9 M²)
18"x18"x3/8" (460 x 460 x 9.5 mm) 619 ft² (57.5 M²) 311 ft² (28.9 M²) 209 ft² (19.4 M²) 157 ft² (14.6 M²) 106 ft² (9.8 M²) 78 ft² (7.2 M²)

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