IRC question regarding drip edge flashing
I was discussing flashing thickness requirements with a few friends over lunch (riveting, I know), and I’d like y’all’s opinion.
Most other flashing requirements are called out by minimum thicknesses, typically 0.5 mm or 26 gauge, like in sections R905.2.8.x.
However, the section about drip edge flashing only calles out requirements on the length of the flanges, but has no requirements about the thickness of the material. This has essentially led to the situation where your choices are 29 gauge, or some sort of pvc.
Obviously you could have someone bend up whatever material you wanted, but really all that means is that if you’re buying “off the shelf” from the lumber yard or the big box store (around here), 29 gauge is all you get.
should the code call out a minimum thickness here to stay in line with the other parts? Is 29 gauge really ok and I’m just being a flashing snob? Did I completely miss the code section that calls it out, and this question is pointless?
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