My partner and I bought a house in July. It has 2 tubs, 1 of which we never use.
Both tubs needed to be re-caulked. On 2022-10-31 I had a professional re-caulk both tubs.
The one that my partner and I each use daily (for showers) already seems to have its caulk splitting just a few weeks later, so now it's starting to look like how it did when we bought the house.
What does this mean, and what should I do?
This is why we use silicone round bathtubs, not caulk - or that may even be the same grout used for the tiles, which is even worse, there is no resistance to stress at all.
If that was a 'professional' job, get them back to fix it. It looks a complete mess & they used the wrong stuff. You paid for a shoddy job, I'm afraid.
If it wasn't pros, then you need to scrape that all out again & use silicone.
Before you start, fill the bathtub with water. That will mean that unless the building is moving over time, the stress on the joint will always be either zero or upwards [compression].
If you seal it when the bath is empty, then every time you fill it with water the stress is downwards [expansion], which will crack most fillers except silicone, which will stand a little more stress, but not forever.
