Series N241
Ultra-Tread MVT
Generic Type
Polyurethane Modified Concrete
Common Usage
Ultra-Tread MVT is a low odor, slurry applied, high performance moisture control base layer designed to reduce moisture vapor emissions prior to the application of non-breathing, polymer floor topping finishes. Ultra-Tread MVT is a 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). Note: Series N241 must be broadcast to refusal with aggregate, color quartz or decorative flake within 15 to 20 minutes of application. Color quartz and/or decorative flake systems will require an additional broadcast layer using non-pigmented Series N222, N224, 237, 238, 256, 257 or 286 to obtain a uniform appearance and texture before applying the desired clear finish coats. This will typically result in a total system thickness of approximately 1/8".
Special Qualifications
Series N241 is formulated using a Phthalate and Phenol Free Bio-Based Environmentally Friendly Polyol. It meets requirements for use in USDA and FDA-regulated facilities. Formulated with antimicrobial properties. Does not support bacteria or fungal growth. Contact your Tnemec representative for specific test results.
Series N241 was tested in accordance with, and passed, the California Dept. of Public Health (CDPH) Standard Method v1.2 and meets the requirements of LEED v4.1 Low-Emitting Materials, Collaborative for High Performance Schools-Paints & Coatings, Living Building Challenge Materials Petal 10, and WELL Building Standard v2 X06 VOC Restrictions.
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Volatile Organic Compounds
A & B: 0.11 lb/gal (13.2 g/L)
Parts A, B, & C: 0.05 lb/gal (6.38 g/L)
Topcoats
Series N222, 230ESD, 233, 237, 238, 239, N246, 247, 248, 249ESD, 252SC, 256, 257, 280, 280FC, 281, 282, N284, N285, 286, V290, V291, 296, 297. Note: These topcoats may only be used when recommended aggregate, colored quartz, or decorative flake has been broadcast to refusal into the wet Series N241. Note: If Series 247, 248, 249ESD, V290, V291 or 297 is selected for the finish coat over a broadcast system, a grout coat of Series N222, 233, 237, 238, 256, 257, 280, 281, or N284 is required.
Recommended DFT
46.0 to 52.0 mils (1168 to 1320 microns) applied neat. Film thickness, after broadcasting with aggregate, is approximately 1/8" (3mm). 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 N241 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.
Surfacer/Filler/Patcher
Series N241 (extended with aggregate) or Series N243, N244. Patching should be broadcasted to refusal with aggregate or re-prepared after being allowed to cure a minimum of six hours prior to placement of Series N241 to avoid blistering or doming. Series 215, 217, N218, 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.
Primers
Self-priming
Theoretical Coverage
89-100 sq ft (6.50-7.43 m²) per small kit
Number of Components
Three—Liquids: Part A & Part B, Aggregate: Part C
Volume Solids
100% (mixed)
Intermediate
Series N222, N223, N224, 233, 237, 237SC, 238, 239, 239SC, 252SC, 256, 257, 280, 280FC, 281, 282, 286. Note: Series N241 must be broadcast to refusal with aggregate, colored quartz, or decorative flake before 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 N241 base coat will account for approximately 1/8" of the desired system thickness.
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