Bad sub floor.gasket flange to high If the sub floor has been wet. osb/ plywood is a sponge.

Its junk.

The unit is bolted to floor and should not move.

KISS 16 on center or 24

I have put bracing under bad /sponge floor but the end result is work

I don't have much experience with them, but I have seen them advertised in HD......."better than wax toilet rings".

I wonder if those would help you out. The floor doesn't sound all that level.

Or you can just remove all of sponge .reinforce as needed and use treated lumber if u expext more problems.

its not the weight of the person .

"Large people Think the toilet is a rocking chair."

20 years ago a LL taught me to put a wood spacer between tank and wall so "They can't Rock on Toilet."

No charge to pass on what I was taught.

The family members are all at least 225 pounds.

I am a licensed plumbing contractor. Many times people install the toilet lock down bolts to the flange with nothing but a plastic washer to hold it in place, then bolt the toilet on top of the flange with a wax ring -- wrong way.

Instead, one has to apply a nut and bolt the screw to the toilet drain flange so it won't move, slide and come out from the flange. The install the wax ring and put the toilet on top. Then bolt down the toilet using another nut and cap washer, then putting the cap on top.

melinda,

Wax rings compress over time with weight. Back when I was doing the work I would install then sit on the toilet for a few minutes to press the wax ring with my body weight. Then reach down and snug the bolts again.

Also when the home and the crawl space warm up the wax softens.

Best to return in a few days of use and snug them again.

Snug the bolts on each quarterly visit.

My guy would install double wax rings.

The wax must be securely attached to the porcelain. Review this with your installer.

I like the rubber donut style.

Toilet bases are not designed for wide bodies

and are constantly a problem esp with females in the home - they sit and tilt more than men.

A wide stance toilet is available. Expensive.

It appears as thought the only company that mentions anything about their toilets' weight capacities is Kohler which says 1,000 # for floor mount toilets & 500# for wall mount toilets.

The average toilet weight limit is around 1000 pounds (453 kg) for normal standard toilets and 500 pounds (227 kg) for wall hung toilets. There are no Government standards or regulations that specify a minimum or maximum weight limit for standard toilets. For wall hung toilets ASME Standard requires them to support at least 500 pounds. Of course these weight limits are for the actual toilet itself & don't include the installation.

IMO any properly install toilet should be able to accommodate a 250# - 300# person without any issues. I'd be willing to bet that your problems are due to a faulty installation rather than 225# people using it. Since there are 3 different toilets that are having to be reset every few months, I'd bet that your handyman is not capable of analyzing & solving the problem. I suggest that next time he goes there to make a service call for a loose toilet that you accompany him & see what is the real problem & what is is actually doing to resolve it.

As others have mentioned you need to be certain that the real problem is not caused by one of the following;

1. Unlevel floor & toilet not properly shimmed - check floor area with level then shim toilet base as needed

2. Soft / punky / damaged floor doesn't provide solid support - remove & repair damaged areas (IMO highly unlikely for 3 different baths to have the same problem)

3. Closet flange too high above finished floor - replace toilet flange & install at correct height 1/4" is ideal with 1/2" about the maximum for most toilets

4. Damaged closet flange doesn't allow Johnny bolts to be properly installed & tightened - replace closet flange or use a split repair flange

5. Closet flange roughed in wrong distance from wall - add solid spacer between wall & back of toilet tank to lessen the tanks ability to move

6. Wax ring installed incorrectly - thoroughly clean the closet flange & toilet horn then install a new gasket making sure to allow it to acclimate to the room temperature & compress by applying weight during bolt tightening. When he thinks it's tight enough, sit on the toilet & wiggle to compress it further then retighten the bolts. Some people prefer the style with a built in plastic extender or even using an extra wax ring. You might even consider trying one of the rubber seals like the ones made by Fernco or Fluidmaster

7. Toilet seat is too low for the users - get a seat extender or install a handicap height toilet

8. Tenants using toilet tank for support as they try to get up - install a grab bar or see #7

Giddyup !

Sounds like someone is sitting on it backwards

RB,

You have me confused..........Toilets don't come with built in desk?

Man I must be doing it backwards all these years. I thought that is why it is called the reading room.

My guess is a installation problem. You need to try someone with more experience. And explain the problem so they will do better.

I find even with plumbers. Few will take the extra step to install shims and level toilet. Like Robert CA said.

Then some will have a plastic flange. These warp and bend up over time some the bolts come loose. They make a cheap stainless repair ring that you can put over a plastic flange that solves the problem. On real bad deformed ones I have even had to grind down the plastic to get level and have the repair ring fit.

Either way there is some problem. Installation or the floor. Replacing every 6 months is not common at all. Even with 300 Lb people.

Not that I think it is the problem. But I did notice Toto toilets have a little larger base than most.

Our plumber makes his own "wax rings" that never seem to fail. He uses alot of plumber's putty and shapes the putty into a thick ring. Last time a tenant called to see if we paid for a broken toilet seat or they did, the question should have been,

"If we rocked back and forth on the toilet so hard to take a crXp that we cracked the porcelain and solid wood toilet seat that water is now leaking from the toilet, do you pay for that or do we?"

Every six months is a bit excessive I think. Maybe you need a "taller" toilet? This way they aren't sitting hard when they do ...