Yesterday I used DAP water-based contact cement to attach a laminate edge strip to one edge of a counter top that has a pine edge strip (smooth but with no existing finish) already. The strip of laminate already had a coating of that same contact cement that had dried long ago, so I put an additional coat on that surface and also gave the pine edge strip its first coat. After an hour or so, they bonded together just fine.
Later in the day I put a coating of the same contact cement on another pin edge and on another strip of laminate. They will *not* bond. I applied another coat of the contact cement to both surfaces, but they still would not bond.
What could possibly be the problem here? The contact cement is less than a year old and appears to be fine: it is still a milky liquid with a
*faint* solvent smell. But even if it were approaching the end of its shelf life (one year), how come it worked on one strip and not on the other?Perce