Series 241

Ultra-Tread MVT

Generic Type

Polyurethane Modified Concrete

Common Usage

Ultra-Tread MVT is a high performance moisture control system designed to reduce moisture vapor emissions prior to the application of non-breathing, polymer floor topping finishes. Ultra-Tread MVT is a low odor, self-priming, base coat that can be applied to 10 day old concrete. It can withstand moisture vapor transmission up to 20 lbs (per ASTM F 1869) and relative humidity up to 99% (per ASTM F 2170). This unique, self-leveling slurry system is typically applied by V-notch trowel or squeegee, backrolled with a loop roller and broadcast to refusal with 30/50 mesh aggregate, colored quartz or decorative flake yielding an approximate 1/8" thick base layer.

Special Qualifications

Formulated with antimicrobial properties. Does not support bacteria or fungal growth. Contact your Tnemec representative for specific test results.

Series 241 was tested in accordance with, and passed, the California Department of Public Health CDPH/EHLB/Standard
Method Version 1.1, 2010 emissions testing and meets qualifications of LEED v4, Collaborative for High Performance
Schools, and Living Building Challenge.

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Number of Components

Liquids - Two: Part A & Part B
Aggregate - One: Part C
Field Colorant - One: (Optional) If tinting Series 241, order Series 244 Part D color packs, available in 00GR Gray and 00RD Red. Must be ordered separately.

Volume Solids

100% (mixed)

Recommended DFT

46.0 to 52.0 mils (1168 to 1320 microns) applied neat. Film thickness, after broadcasting with aggregate, is approximately 1/8". Refer to coverage rates table for more information. Note: Exceeding the recommended coating thickness may result in blistering of the product. Avoid excessive coating thickness by thoroughly filling voids, depressions and cracks with recommended filler or surfacer prior to Series 241 application.

Curing Time

Temperature Min. Recoat Light Traffic Place in Service
75°F (24°C) 6 hours 8 hours 12 hours

For full resistance to chemicals and heavy traffic, 24 hour cure is needed. Curing time varies with surface temperature, air movement, humidity and film thickness. Note: For faster curing and low temperature applications, add No. 44-714 Ultra-Tread Accelerator, see separate product data sheet for cure information.


Series 241 (extended with aggregate) or Series 243. Patching should be allowed to cure a minimum of six hours prior to placement of the Series 241 to avoid blistering or doming of the Series 241. Series 215, or 201 or 208 mixed with fumed silica, may be used for small patches or crack repairs. Certain high-early strength, cementious repair mortars are also acceptable. Contact Tnemec for further qualifications.


Series 222, 223, 224, 233, 237, 238, 239, 252SC, 256. Note: Series 241 must be broadcast to refusal with aggregate, colored quartz or decorative flake if topcoating. Broadcast aggregate or colored quartz at an approximate rate of 0.8 lb per sq ft and decorative flake at an approximate rate of 0.25 lb per sq ft or 4 to 5 sq ft per pound. The Series 241 base coat will account for approximately 1/8"-3/16" of the desired system thickness.



Volatile Organic Compounds

Parts A & B: 0.05 lbs/gallon (5.6 grams/litre)
Parts A, B & C: 0.03 lbs/gallon (3.9 grams/litre)


Series 233, 237, 238, 239, 246, 247, 248, 252SC, 256, 280, 281, 282, 284, 285, 286, 290, 291, 294, 295, 296, 297. Note: These topcoats may only be used when recommended aggregate has been broadcast to refusal into the wet Series 241. Note: If Series 247 (tinted), 248 (tinted), 290, 291 or 297 is selected for the finish coat over a broadcast system, a grout coat of Series 237 or 238 (tinted), 256 (tinted), 280 or 281 is required. If Series 247 (clear), 248 (clear), 285, 294, 295 or 296 is selected for the finish coat over a broadcast system, a grout coat of 237 or 238 (clear), 256 (clear) or 284 is required.

Theoretical Coverage

70-80 sq ft (6.50-7.43 m²) per small kit

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