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Joseph Gwinn

On Dec 24, 2016, wrote
(in ):

On Sat, 24 Dec 2016 10:00:15 -0800, Electric Comet
wrote:

anyone know if would glue breaks down at hi temps

say 200-300 f
Depends what kind of "wood glue".

Hide glue melts at 150 to 180F.
Casein glue should not be heated beyond about 150F
PVAgoes "plastic" at about 160F

So the short answer to your question is "yes, many wood glues will
fail well below 200 to 300 degrees F"

Also, what do we mean by €œfails€?

I have two heavy wooden doors bought 10 or 15 years ago that quickly sagged
trapezoidal in the summer heat - the Sun hits them in the afternoon. The
original doors were ratty, but never sagged. The problem is that the door
manufacturer used some kind of plastic based glue (Titebond?) that creeps in
the heat of the day, which is inappropriate in an exterior door. My solution
is a turnbuckle brace, but that door manufacturer needs to use a suitable
glue. Like Resorcinol or epoxy - something that chemically sets, versus being
thermoplastic.

Joe Gwinn