question about recommended glue

[David Carter]

In very dry weather, I slide a moistened rag along the sides of the plywood that I'm about to put together, some 15 minutes before actually gluing them together. If it's not very dry, I don't bother and the amount of water that is naturally present in the air at higher temperatures is enough for the glue to cure.

I guess this is why I've never had a problem even though I've never moistened anything. I live in a moderately humid climate and do all my building in a non-heated, non-air-conditioned garage.

[Rick Lee]

I'm not a glueologist, but what set my mind to ease about not dampening joints before glueing was what I think is a (slightly) logical thought: PL seems to be marketed to the construction industry. If a builder had to moisten joints before applying the glue I think the builder would defer to a competing product that doesn't require moistening. I would bet that the PL people formulated the glue so joints don't require pre-moistening.

[Harley]

I'm not a glueologist, but what set my mind to ease about not dampening joints before glueing was what I think is a (slightly) logical thought: PL seems to be marketed to the construction industry. If a builder had to moisten joints before applying the glue I think the builder would defer to a competing product that doesn't require moistening. I would bet that the PL people formulated the glue so joints don't require pre-moistening.

Well, you're right in a sense that moistening is not absolutely critical....but...with all the research and questioning I have done with various manufacturers or expanding polyurethane glues because it was relatively new here, they all have stated that for "the best results", pre-moistening the joints is recommended.