Idealseal GP Mastic is a cost effective sealant based on a blend of polymers and oils also incorporating selected fine fillers. It has excellent adhesion to most construction surfaces. After application a protective skin forms in approximately 24 hours and is suitable for painting in 3-4 days. The bulk of the mastic remains soft and flexible beneath the skin. If excessive movement occurs, rupturing the skin, the mastic will reseal itself.
Idealseal GP Mastic is suitable as an economical solution for pointing and weather sealing around metal and timber doors, window frames and sills, sealing low movement joints in brick and concrete construction and the bedding of cold storage panels. It has good adhesion to most building materials including brickwork, concrete, glass, plaster and most metals. Not suitable for bituminous substrates or in constant water immersion situations.
Surfaces must be clean, dry and dust free. Cut the cartridge seal and screw on nozzle which should be cut to required size. Gun the sealant firmly into joint ensuring no air is trapped behind. Tool immediately after application.