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Old 12-09-2008, 02:33 PM   #8
cx
Da Home Builder
 
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Join Date: Jul 2001
Location: Boerne, Texas
Posts: 85,687
If you axe the caulk manufacturers, Ray, I believe they'll tell you the surface wants to be a little concave. Just as the bottom wants to be concave over the top of the backer rod. All part of the great cosmic caulking plan.

We usta have the Caped Caulking Crusader hereabouts to 'splain all that sorta thing for us, but he ain't been neither seen nor heard for this long time. Got tard of beatin' his head against John Bridge's wall, most likely.

I believe Chris The Rep is pretty well schooled on that caulking bidness, too. Maybe he'll drop by and comment.
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