RV Toilet is Leaking on the Floor
A leaking RV toilet is not only annoying, but it can also cause water damage to your flooring and the plywood underneath. RV toilets need are a little bit different than a home toilet, and therefore, the troubleshooting will be different. The first step is to find out why your RV toilet is leaking and then do something about it.
First, you’ll need to find out exactly where the water is leaking from
- Does it drip from the upper part of the toilet when you flush?
- Is there water just around the base of the toilet?
- Does the water leak only when the bowl is full?
- Once you figure out where the toilet is leaking then you can proceed to fix it.
Water is leaking from the upper part of the toilet
If your RV toilet is leaking from the upper part of the toilet when you flush could mean that something is wrong with the floating seal in the vacuum breaker. If this seal breaks it won’t hold water, causing a leak. On some toilets, you can buy a kit to replace the floating seal. Other toilets need to be taken apart and thoroughly cleaned. Sometimes the seal dries out over time, developing a slow leak. To prevent this, coat the seal with Plumber Grease. You can get this in the plumbing department of a hardware store. Doing this may solve the problem. You’ll need to look at your toilet’s model, and check with the manufacturer to find out what to do about a faulty float seal in the vacuum breaker.
There is water leaking around the base onto the floor
This is the most common type of RV toilet leak. Water seeps out from the base of the toilet usually after flushing. Sometimes, it may leak without flushing. If this is what’s happening with your toilet, you might need to replace the flange. This is a wax or plastic ring that’s between the toilet and the floor. In order to replace the flange, you need to remove the toilet. Be sure to do some research before attempting to remove your RV toilet.
It’s also possible that the leak is coming from the water hose connections behind the toilet. Before you assume it’s the flange and pull the toilet up, make sure the hose connections to the water valves are tight.
It leaks when the bowl is full
If your RV toilet only leaks when the bowl is full, inspect the toilet for cracks. A crack above the normal use line will cause a leak; this can sometimes happen with plastic toilets after winterizing an RV. A porcelain toilet can still crack, but winterizing doesn’t affect it.