wrote:

Our toilet leaks at the base and rots the wood floor. We've pulled it
twice now, cleaned the junction, replaced the wax ring, and reseated
it. It still leaked. Now we've had the wood floor repaired from the
water damage, and I don't want this to occur again.

Any advice?

The pvc fitting on the floor is a bit strange, it has an offset. Is
that common? The foundation is concrete, so I can't exactly replace
this, but I blame this for the fact that this toilet seems to get
clogged a lot. The fitting is also not perfectly level, could that be
the problem?

Are there special wax rings that might help prevent this problem?

Three Pictures (the resudue is from the wood floor repair, I have
cleaned the junction well before reseating the toilet in the past):

http://picasaweb.google.com/funkymon...51643511105762

http://picasaweb.google.com/funkymon...51647806073074

http://picasaweb.google.com/funkymon...51647806073090


Fernco makes a rubber seal:
http://www.fernco.com/FTS.asp
but I don't think it will work with your offset flange.

As the other Jim said, double up on wax.

Another trick: Don't merely slap the wax ring on
the toilet outlet horn. Heat an extra ring with a
hair dryer to soften it. Dry the horn with the dryer too.
Take a putty knife and smear the heated wax around the
horn so it sticks like glue. The, take a fresh ring
and squish it onto the prepared horn. Work it by hand to
adhere tightly.

Measure to be sure the wax ring(s) extend far enough so it will
be compressed when it meets the flange. Clean the flange
and apply heated wax to it too with putty knife.

Offset flanges will indeed cause clogging. It's worse
if the toilet paper is the newer soft style.

Jim