VARNISH-PU 1K is a transparent solvent-free aliphatic polyurethane varnish. The membrane it creates is watertight, unaffected by UV radiation, does not yellow and has very good mechanical and chemical resistance
It offers the following advantages:
- Easy application.
- Particularly suitable for interiors because it does not smell.
- Resistance to UV radiation and weather conditions (rain, frost).
- Resistance to cleaners, oils, seawater, etc.
- Water vapour permeability.
- The area is accessible to pedestrians.
- Form: prepolymerized polyurethane resin
- Shade: transparent, satin-matte
- Density: 1.12 kg / l
- Viscosity: 640 mPa · sec (+ 23ºC)
- Tensile strength:> 50 N / mm2 (ASTM D412)
- Elongation at break (ASTM D 412): 20-22%
- Shore D Hardness: 74
- Abrasion resistance: 35 mg (CS17 / 1000/1000) (ASTM D 4060)
- Capillary water absorption: <0.1 kg / m2; h0.5 (EN 1062-3, requirement EN 1504-2: w <0.1)
- Adhesion to concrete:> 2 N / mm2 (EN 1542)
- CO2 permeability: Sd> 50 m (EN 1062-6)
- Artificial ageing: Successful (no (EN 1062-11, blisters appear, after 2000 h) cracks or detachment)
- Fire response: Class F (EN 13501-1)
- Consumption: 100 g / m2 per layer, depending on the absorbency of the substrate.
- Prior to application, it is recommended to lightly stir the VARNISH-PU 1K.
- Excessive agitation should be avoided for the risk of air entrapment.
- VARNISH-PU 1K is rolled.
- Depending on the absorbency and the use of the substrate, 2 to 4 coats are required.
- Each subsequent layer follows within 24 hours from the previous one and if it has dried, depending on the weather conditions.