So your screwing down the toilet flange into the wooden floor.
You use decking screws?
How many screws do you use?
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Replies
Brass or SS screws are probably the best choice (due to corrosion), but good quality galv deck screws should work. In part it depends on the nature of the flooring -- deck screws will generally hold better in "slightly compromised" wood and are available in a wider variety of sizes so you can pick the best match.
Four screws should be sufficient, but fill every hole if the wood is compromised.
Remember that the flange is not intended to support/anchor the stool -- it should be carefully leveled so that it ABSOLUTELY doesn't rock and has no tendency to "creep". Just tighten the stool bolts enough to be snug -- only a little beyond hand tight.
I use three or four, but not deck screws. I use a #10 or 12 brass screw, and wax the threads. I have taken out to many toilets and found the screws rotted off. Even galvanized will give up if there is any seepage in that environment.
Dave