A transparent ready to use universal construction adhesive based on polyurethane with a very high end strength. Fast strength build up that foams during the curing process to fill gaps in uneven surfaces. For best performance substrates should be clamped for 60 minutes. Features and Benefits Professional quality Transparent Fast curing Filling characteristics, suitable for uneven surfaces Waterproof D4 Solvent free Applications Applications which are exposed to high relative humidity. Exterior applications which are exposed to direct weather influence. Bonding of windows and door frames (also corner connections) which need to meet class D4 according to EN204. Bonding of wooden construction elements. Bonding of insulation materials including polystyrene.