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Clear UV resistant polyurethane coating :  

MasterTop TC 471 - Clear UV resistant polyurethane coating for concrete 

DESCRIPTION

MasterTop TC 471 is a clear UV resistant two component polyurethane coating system for concrete in both internal and external applications. 

RECOMMENDED USES

  • General retail operations
  • Restaurants
  • Television studios
  • Photo studios
  • Carparks
  • Workshops
  • Printing operations
  • General commercial areas
  • General externally exposed concrete
  • Correctional facilities
  • Animal care centres            

FEATURES AND BENEFITS

  • Provides an aesthetically pleasing matt finish
  • Fast hardening
  • Non yellowing, UV stabilised - external applications
  • Good chemical and stain resistance
  • Excellent scratch resistance
  • Re-coatable
  • Good general durability            

PROPERTIES

  • Cure time: 7 days @ 25 C
  • Work time: 4 hours @ 25 C
  • Tack free time: 30 - 45 minutes @ 25 C
  • Recoating time: 24 hours @ 25 C
  • VOC SCAQMD 1168: <1 gram / litre  

Application

Surface staining may result from exposure to some aggressive chemicals. APPLICATION Concrete should be at least 28 days old. Ensure the substrate is clean, dry and free of additives, curing agents, oils etc. Prepare substrate by grinding or captive blast cleaning as applicable to expose firmly adhered aggregate. Allow to dry if wet. Surface profile should exceed CSP 2. For highest durability, prime external concrete surfaces first with MasterTop TC 406.

Select a slow speed (400rpm) mechanical mixer and ensure thorough mixing. Add MasterTop TC 471 Part B to MasterTop TC 471 Part A. Mix until uniform. Then add up to 15% by volume potable water was necessary to adjust viscosity for first coat. Apply in an even coat over the surface at up to 100 micron wet film thickness. Apply a second, undiluted coat to achieve a minimum total of 120 micron dft.

MasterTop TC 471 can be applied by roller, spreader bar or airless spray. Allow the coating to cure for 7 days prior to subjecting to full exposure. For extra non-slip finish broadcast a suitable fine, clean and dry aggregate into the first coat. Always protect from rain for 24 hours after application. Avoid application when relative humidity is >80% and temperature is <12 C.

ESTIMATING DATA

Approximately 180m2 per coat.

PACKAGING MasterTop TC 471 is packed as a 18 litre kit comprising: MasterTop TC 471 Part A: 14.4 litres MasterTop TC 471 Part B: 3.6 litres

SHELF LIFE MasterTop TC 471 has a shelf life of 12 months. Store out of direct sunlight, clear of the ground on pallets protected from rainfall

 

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