Customer had a previous plumbing company out to check a leak that is occurring from the plumbing in the upstairs master bathroom. Ran the shower and noticed there are a lot of cracks in the tile where water can be seeping but nothing pouring out while it was on. Checked the overflow at the tub and the cover as easily moved with my hand, further diagnosis revealed that the overflow plumbing in the wall was leaking as well. Tightened the overflow cap and filled the tub. The overflow is not leaking at this time but the poor plumbing for the waste line is leaking. I also noticed that the tub is not silicone around the outside, splashed water on it and it came out from the seal between the tub and the surround. I also noticed that the wall on the tub that the previous plumbers removed to do there diagnosis was not sealed around the floor so any water on the floor seats into the wall and drips down. Discussed the tankless descale that we offer with our annual maintenance plan and upon diagno