On sunday i glued up a countertop for my bathroom using mdf and laminate and contact cement. Today i went to my house and i just tested a corner of it by pulling lightly and i was able to peel the whole thing off. Ive never had prblems in the past doing it the same way. Any clue why it didnt stick? i got the heat set to 49 in the house cuz im not living there, think it might be too cold?