Smooth Polyurethane Construction Sealant ($5.95 per tube)
Polyurethane is a high performance, low modulus, one-component, moisture curing modified polyurethane sealant. It has a smooth, even consistency and surface when cured. M64 requires no priming for common substrates such as brick, concrete, aluminum, vinyl, wood and granite. It applies with any standard cartridge caulking gun to clean, dry surfaces. M64 was specifically developed for sealing dynamically moving joints, such as: expansion and control joints, precast concrete panel joints, curtainwall joints, perimeter caulking (masonry, windows, doors, panels), bedding of mullions, panels and frames. It is compatible with I.G. sealants when glazing units and applied as a toe or heel bead. M64 exhibits tenacious adhesion which will not dissipate with time. This unique weather-resistant formulation possesses a balanced adhesive strength, low modulus and high recovery, making it ideal to withstand the following adverse conditions common to such installations: moisture, movement, shear and deflection. M64 is suitable for continual immersion in water with the use of the appropriate primer. Paintable after full cure, minimum 72 hours.
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