Forum Discussion

myredracer's avatar
myredracer
Explorer II
Sep 05, 2018

Toilet overflowed...

Had an extended 6-night labor day weekend camping trip. Around 7 am on the second morning I got up to go to the bathroom and stepped in about 1/2" deep water. Nooooooooooooo.... I quickly discovered that the toilet had overflowed since the last time someone used the toilet during the night, maybe about 3 hours earlier.

Like a scene from Apollo 13, after quickly realizing there was a catastrophe, in seconds we were both grabbing towels, the dog blanket and a sleeping bag to mop up the water. I hadn't bothered to properly level the trailer and the water was in front next to the bed on one side. Fortunately it hadn't run under the slide, to the kitchen or under the dinette seating where the furnace and converter are.

Once the standing water was all mopped up, I used the hair dryer to try and dry up the bottom of the luan paneling and under the under-bed storage and under the bathroom vanity. Water had gotten in the pass-through storage so that had to be mopped up too along with using the hair dryer.

Then, looking at the underbelly, it was obvious water had leaked there too. I quickly pulled down almost 1/2 of the coroplast and found some of the batt insulation was saturated. I also found the the some of the batt insulation directly under the plywood subfloor was also saturated. I cut slits in the Darco fabric where it appeared water was trapped. The left side of the trailer where there is Darco between the frame and outer wall (about 1' wide lengthwise) had quite a bit of trapped water so I ended up cutting a slit lengthwise about 12' long (between the outriggers). I pulled out what I *think* was all of the saturated insulation.

From when I stepped on the water to the time the corolplast was pulled down and all the wet insulation removed was around 4 hours non-stop. I made a trip to a nearby hardware store and bought the only batt insulation they had, the last roll of 15" wide R12 in the store plus a roll of Gorilla tape. Over the next two days I got new insulation installed, the cuts in the Darco taped up and the underbelly back in place. Getting the coroplast back in was waaay harder than getting it out. Working on my back in a CG on sharp crushed gravel was NOT fun. I could not find any wet looking plywood subfloor.

I'm not really sure why the Thetford Aqua Magic (porcelain) toilet overflowed. The holding tank had filled right up. Not sure if it was the foot valve mechanism or a sticking flapper seal. If you release the foot pedal slowly, the flapper valve doesn't fully close and the water keeps running. We found the toilet had started to overflow 2 seasons ago and caught it in time. Had an RV repair shop install a new water valve and it has been fine until now. Several years ago I installed a shutoff valve behind the toilet and we kept it off and only turned it back on when we needed to flush.

What a POS toilet if it can overflow like that. Not sure I want to rebuild/repair it or get another brand. Would switching to a Dometic toilet be better? I never ever want to have this happen again, besides the fact that the weather was great and it ruined the trip.

Oh, and to add insult to injury, I found that a PEX fitting under the shower was leaking and water had gotten under the shower and into the insulation below. The cinch clamp on the flex braided hose to the toilet was improperly done at the factory. I have no idea how long it has been leaking. Had to make another trip to the hardware store for a couple of fittings. Ended up using a gear clamp temporarily until I can fix it properly at home.

FWIW, the insulation and the so-called "heated underbelly" is a joke in these things. If I had the time and inclination I would pull out all the insulation and do it better/properly.

Not a good weekend. :(
  • joelc's avatar
    joelc
    Explorer III
    Been there. What a mess. A practice I now have. If I a going to be gone for an extended period of time, I shut off the water supply.
  • I had a flood situation similar to that long ago. As an admitted overreaction, I no longer hook up to city water. I fill the tank and use the pump. At least if I have a leak, the pump will alert me.
  • When same thing happened to us and you have it under control, but thought I'd add my experiance and what I did. (Not saying what I did is right or wrong)

    I used foam insulation as replacement as foam doesn't trap water as much.

    With us... a grandkid got up in middle of night and didn't want to wake anybody so she gently released the foot valve, and aparently so gentle that the valve didn't shut off supply water all the way. Atleast that is what Thetford's customer service best guess was. Other guesses was what the valve rides on had a rough spot or a wear groove in the plastic and valve didn't "seat" all the way. Now before anybody uses the toilet we give a "potty" lesson on how to use the toilet and don't be gentle with foot valve. That was also when we went totally self contained mode in water department only. No more of an unlimited water supply coming in if something breaks, pressure valve or not.

    Then filed insurance claim, but nothing could be done until there was actual damage and how much to fix. But a file was started as a "open claim" and to call back in when actual $$$ amount of claim could be established.

    Then dried out with dehumidifer and I picked up moiture meter from big box store. Kept dehumidifer going till until humidity gauge inside TT matched just about what was outside. Took several weeks just to be sure. Moisture meter that pokes into wood with little prongs pretty useless IMO. Moisture gauge helpful.


    Then put in another water pump switch in bathroom and little led light visible from outside. As a reminder when we leave TT make sure led is not on. As in no elec going to water pump. And I put one of these under the sink, under water pump and under bath. https://www.homedepot.ca/en/home/p.battery-operated-water-alarm.1000800787.html (link doesn't want to work... "watchdog water alarm")

    Doesn't gravel feel great laying in it? I changed a starter in a campground once. Not good so I picked up a cheap foam yoga mat that rolls up nicely. Helps a lot.

    Couple years later out of the blue, the insurance company calls and tells me they are closing the "open" claim. I forgot all about it and have no damage to TT that I can see.
  • The Thetford POS is known for flooding the bowl and then the RV (among other things). Buy a Dometic 320 and throw the Thetford away.
  • This is the reason I shut the water down at night and use a plastic pitcher half full of usually dishwater to flush the toilet.
  • myredracer wrote:
    Not a good weekend. :(


    Geez Gil, seems you've had so many issues with your Spree that it's time to buy a boat! :p
  • ALL gravity toilets are prone to overflowing if water continues to run

    Flush pedal should be allowed to SLAM closed....slip your foot off vs using foot to let flush ball close slowly

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,190 PostsLatest Activity: Jan 22, 2025