Originally Posted by
brian schmitt
had a rep from apa give a seminar on the spacing issue and he said it was a recommendation but not a mandatory requirement. they would still warranty their product without the spacing. i was suprised to hear it from one of the horse's mouth's!

I'm not surprised.
What warranty issues would result from lack of spacing?
Any warranty issue would result from failure of the product, delamination, falling apart, those kinds of things. Lack of spacing will not cause those types of things.
Thus, it makes perfect sense.