Trade Mate Frame Seal provides excellent unprimed adhesion to most common construction materials and will not discolour. This sealant also offers good joint movement capabilities and, once cured, will remain flexible and water resistant throughout its long service life. MAIN USES External perimeter pointing of door and window frames, especially PVC-U, coated aluminium and painted surfaces. BENEFITS No primer needed High movement capability Will not crack, shrink or craze Excellent adhesion to most common substrates including PVC-U Long service life Maintenance free