CTS Rapid Set Tru SP Topping


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TRU SP is a high-flow topping with a specialized aggregate that creates a salt and pepper appearance on polished, decorative floors. Customize TRU SP by adding decorative aggregate. Place with a minimum thickness of 3/8”, or a minimum thickness of ½” for floors subjected to high-load, rubber-wheeled traffic. Use for polished concrete floors in schools, airports, warehouses, retail, restaurants, lobbies, and more. TRU SP is available in natural and gray colors.

  • USES: Use TRU SP for polished floors in schools, airports, warehouses, retail, restaurants, lobbies, and more.
  • ENVIRONMENTAL ADVANTAGES: Use TRU SP to reduce your carbon footprint and lower your environmental impact. Production of Rapid Set cement emits far less CO2 than portland cement. Contact your representative for LEED values and environmental information.
  • APPLICATION: Use TRU SP when a high quality, fast, polishable topping is required. TRU SP is ideal for projects that need long flow life and working time while achieving high early strength. Protective coatings, sealers or epoxies can be applied per the manufacturer’s recommendations after 12 hours.

Additional information

Weight 60 lbs

Natural, Gray



Spec Sheets


SURFACE PREPARATION: Substrate must be clean, sound concrete that is free of gypsum compounds and all materials that may inhibit bond such as: oil, curing compound, dust, mastic, bond breakers, and other surface contaminants. Mechanical methods of surface preparation such as shot blasting are preferred. Surface must be ICRI CSP 3 to 5. Acid etching the substrate is not recommended. Surface must be dry and be properly primed. Surface and ambient temperatures must be between 50°F and 90°F (10°C and 32°C).

PRIMING: Use a Rapid Set® TXP™ epoxy primer with sand broadcast to refusal. Follow all product specifications and instructions.

MIXING: For each bag of TRU SP, use 4.0 to 4.5 quarts (3.8 L to 4.3 L) of potable water. For polished floors, use less water to achieve maximum sand exposure with minimal grinding. It is recommended to start with 4.25 quarts (4.0 L) per bag. Add the measured amount of water to the mixing container. While the mixer is running, add TRU SP. Water may be adjusted within the acceptable range, if necessary, to provide the desired flow. Do not exceed 4.5 quarts (4.3 L) per bag.

When mixing 4-bag batches, use 17.0 quarts (16.1 L) of water in the appropriate sized batch mixer. Mix using an ICRI 320.5R #P2 or #P9 helix-style mixing paddle. After the final bag is added to the batch, mix an additional 2 to 3 minutes until the mixture is lump-free. If more flow is required, add 0.5 quart (0.5 L) increments of water and check the flow. Do not exceed 18 quarts (17.0 L) per 4 bags. Avoid mixers that entrap large amounts of air. Mixed TRU SP should be placed within 20 minutes. Maintain material temperature between 60°F and 80°F (16°C and 27°C).

PLACEMENT: Arrange work area to permit continuous placement without cold joints. Place the TRU SP onto the prepared and primed substrate with a minimum thickness of 3/8″ (10 mm). For floors subjected to high-load traffic, TRU SP must be applied at a minimum thickness of 1/2″ (13 mm). All existing joints and moving cracks must be honored up through the topping. TRU SP will flow and level within 15 minutes. Use a gauge rake to coax the material into place as required. Immediately after placement, use a Rapid Set® Spiked Roller to remove any entrapped air. A smoother may be used on the surface.

CURING: No wet curing is required under normal conditions at 70°F (21°C) with moderate humidity. If used in exterior or low humidity conditions, apply a fine water mist as soon as it can be done without marring the surface. Continue until one hour after final set. Avoid excessively dry, windy, hot or sunny conditions.

POLISHING: TRU SP may be polished wet or dry after 24 hours at normal conditions. TRU SP grinds and polishes much like concrete and can achieve a very high gloss and Distinctness-of-Image (DOI) due to its excellent surface hardness. Polishing toppings requires a high degree of experience and craftsmanship. Contact CTS Cement for a list of preferred installers.

YIELD & PACKAGING: TRU SP is available in 60-lb (27.2-kg) polyethylene-lined bags. Yield is 0.5 ft3 (0.01 m3) per 60-lb (27.2-kg) bag. Coverage is approximately 16 ft2 (1.5 m2) at 3/8″ (10 mm) thickness or 12 ft2 (1.1 m2) at 1/2″ (13 mm) thickness for flat surfaces.

SHELF LIFE: TRU SP has a shelf life of 12 months when stored properly in a dry location, protected from moisture, out of direct sunlight, and in an undamaged package.