Investigating a toilet leak

[fix]

Noticed a minor leak along the grout line, coming from the base of toilet bowl. It happens after a flush, so probably unrelated to the cistern.

It's a back to wall toilet, so not much is visible from the outside. Thinking to move the toilet to check if the pan connector is loose.

Two questions come to mind:

1) There are no visible bolts, is it just silicone holding the toilet in place? Can it be undone by running a blade under?

2) Any special silicone to adhere the toilet back in place?

Thanks in advance for your input.

[MitchellMc]

It sounds like you’ve already got the right approach in mind @fix. If the leak happens after a flush, it could be coming either from the pan-to-connector seal or, if it’s a back-to-wall toilet with a separate cistern, from the seal between the cistern and pan.

For removing the pan, if there are no visible bolts, it’s likely just bedded in silicone or possibly a mortar base with silicone around the edges. You can usually cut through it with a sharp blade. An extendable blade can help if it’s a deeper bead, but take care to wear cut-resistant gloves and eye protection and cut away from your body.

Once you’ve repositioned the pan, any standard clear wet area silicone will work to re-bed it. Make sure the area is clean and dry before applying it. You don’t need anything special. Just a normal plumbing-grade silicone will hold the pan securely.

Be advised that remove and reconnecting a toilet could be considered plumbing work and might require a licensed plumber.

Please let me know if you have any questions.

Mitchell