Found the leak other shops couldn't

Water rarely enters where it ends up. A wet footwell can be the result of a failed seal at the base of the windscreen, a blocked sunroof drain channel, a perished door seal, or a gap left by panel work done somewhere else entirely, sometimes metres away from where the damp actually shows up. Gravity, panel gaps, and interior trim all move water around before it pools somewhere visible, which is exactly why guesswork and re-sealing the "obvious" spot so often fails to fix the problem.

A proper diagnosis means working through the car systematically: checking seals, drain channels, weld seams, and panel joins under controlled conditions, rather than assuming the leak is wherever the water happens to show up inside the cabin. It's slower than a quick reseal, but it's the only way to actually stop a leak rather than temporarily disguise it.

This is also where crash repair history matters. A car that's had panel work done, whether by us or elsewhere, needs those seams and seals checked as part of any leak investigation, since a leak that starts after a repair is often related to it.