I’m probably over thinking this, but having never drilled tile, plus the nature of where it is, I have essentially one shot and don’t want to crack the tile or drill too large.
I need to secure a new toilet flange to new tile. I got some 3/16 x 1 3/4 tapcons. What size hole do I predrill?
My choices seem to be:
1) Tapcon’s package says to use 5/32. These only seem to be readily available here as a tapcon branded bit and they don’t seem to be made for tile. They’re for concrete.
2) 3/16. It matches the size of the anchor. I figured it’d be just that simple but on second thought, I figured I’d need to leave some meat for the anchor to grab on to.
3) 1/8. Just smaller the tapcon recommended 5/32 so maybe it’s good enough.
I know I’m almost literally splitting hairs and overthinking but I’m worried if I do a pilot hole that’s too small, the anchor will crack the tile as it grabs on and wedges in. But if I drill too big, there’s nothing to grab onto.
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