Polyurethane floor coating
The Numastec FL MP-71 is a colored. one component, highlydurabte. aromatic potyurethanethin-tayerfloor coating.
The Numastec FL MP-71 is specially designed for use as a floor coating, providing high mechanical strength, high abrasion and chemical resistance.
Cures by reaction with ground and air moisture.
The Numastec FL MP-71 is mainly used on concrete floors , on interior surfaces.
Due to its long lasting unchangeable properties is widely used for:
QUICK FACTS
Composition | Pigmented polyurethane pre-polymer. Solvent based. |
Elongation to concrete | 50% |
Tensile strength | > 3 N/mm² |
Adhesion to concrete | >2 N/mm² |
Hardness(SHORE D Scale) | 20 |
Resistance to water pressure | No Leak (1m water column, 24h) |
Application temperature | 5°С to 35°С |
Tack free temperature | 2-3 hours |
Light trafficking | 12-24 hours |
Final curing time | 7 days |
Surface Preparation
Careful surface preparation is essential for optimum finish and durability.
The surface needs to be grinded with a stone- or a diamond-grinding machine. The surface needs to be clean, dry and sound, free of any contamination, which may harmfully affect the adhesion of the coating. Maximum moisture content should not exceed 5%. Substrate compressive strength should be alleast 25MPa. cohesive bond strength at least 1.5MPa. New concrete structures need todryforat least 28 days. Old coatings. dirt, fats. oils. organic substances and dust need to be removed by a grinding machine. Possible surface irregularities need to be smoothened. Any loose surface pieces and grinding dust need to be thoroughly removed.
WARNING: Do not wash surface with water!
WARNING: Do not use a metal-bait blasting machine to grind the surface, because the heavy metal-batt impacts destroy the cohesion of the concrete surface and lower its stability.