New wax ring for toilet bowl?

you don't really describe the odor except to say it is unpleasant. is it humid when it is hot, and is there a lot of condensation on the tank? this could lead to musty odors in hot humid weather. if it smells like sewage, then something is open that shouldn't be. i think with no sign of seepage i wouldn't bother with the wax ring. good luck.

Yes, yes, and yes.......

Before you rip the toilet out, go in the attic, crawl space, or whatever is above there and inspect ALL vent pipes. I have seen them rust thru from the condensation, even saw one that had a 1.5 inch vent pipe totally disconnected from the cast iron stack. Also, check the sink in that room for bad drain pipes. I know there is no tub in such a small room. If all of that checks OK, then remove the toilet and replace the wax ring. You could also have a bad vent pipe inside the wall, which is usually right near or behind the toilet. That will require wall removal, so check that last. One other thing. Is there a lower roof with another vent outside the window to that room? The odor could just be sucked into the window.

Mark

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IMHO:

I would check for dry traps first. See if you wash basin is the source.

Removing the toilet to see if the wax ring needs replacing is kinda weak. Meaning, once you removed the bowl, you have to replace the ring.

So...... I would close all the windows. Put on the other exhaust fans on. Now sniff around. See if you notice any air coming in around the floor and bowl.

Just a guess, trying to prevent you having a fun time messin with wax rings. :)

later,

tom @