Pattex PL250 construction adhesive is a flexible and multipurpose assembly adhesive for indoor and outdoor applications based on the Flextec? Technology. With its very high initial Tack of 350 kg/m², PATTEX PL 250 is the strongest construction adhesive within the Pattex Professional Line. Weather and aging resistant, solvent-free and correctable for a few minutes. Neutral odor. No shrinkage. Can be used on wet surfaces, is over-paintable and sandable once cured.