HYDROLAST - PU/W
Uses: Polyurethane waterproofing roof coating based on water-soluble,
aliphatic (UV resistance) polyurethane resin, with high mechanical properties to allow strong walkability. Bridge cracks 1.0-1.5 mm wide without reinforcement, elongation (DIN) 300%. Less consumption (min 20%) than conventional polyurethane coatings, not effected by standing water. Applied on old or new acrylic or PU coatings, and as a UV protective coating.
Application: Treat concrete surface by Vimaplan putty, also cut, prime and seal cracks using PU. Clean, dry to <4% humidity, prime porous surfaces with water based VIM-Primer or solvent based VIM-Primer-S (For old coatings, no need for primer, just cleaning and light roughening). After primer has dried (3h), apply first coat of PU diluted with 5% water by using a brush or roller, apply mesh (2.5mm) when wet, after 24 hours apply second coat without dilution, then third coat.
Package: 15 kg, White
Mixing Ratio: Up to 5% water for the first coat
Yield: 1.0-1.2 kg/m2 per 2coats or 1.5-1.7 kg/m2 per 3coats+mesh 2.5mm