How do you adhere closet flange to floor
Hello,
I had a wobbly toilet so I went about removing the toilet off the closet flange. When I removed the toilet, the wax, I noticed the following:
1: the closet flange was a little curved (probably from the wobbly toilet), but the bolts still fit and adhere to it.
2: the clostet flange was attached to the bend (I think that is what it is called) or waste pipe but not attached to the floor. There were no bolts or glue holding the flange in place, so if I just replaced the busted bolts the toilet could still rock with the little travel the waste pipe moves.
All the pieces are either cast iron or lead (probably lead since it is an older house and the flange can be banged back into shape with a hammer). Around the flange (not under) is tile, under that I have no idea, I guess wood since there is a basement under it but I guess it could also be concrete over wood.
I got a replacement flange (just the top piece to hold the bolts) but the problem is I cannot screw it down into anything since there is a gap. I don't think I can fit concrete in between the old flange and the gap.
Any ideas?
Thanks