10/04/2026
We really can’t stress enough how important annual moisture testing and pressure testing are when it comes to protecting your van.
Yes, manufacturers generally require seals to be routinely inspected, but the reality is this — if a fixture hasn’t been installed correctly during the build process, and the only visible seal is the overlay seal, the real issue can remain hidden until damage has already occurred.
In this case, the hot water system had only a basic overlay seal applied around the surround. Water was able to track past that barrier and cause extensive damage behind the scenes.
We also found the front handle screws had not been sealed, creating another clear entry point for water.
Unfortunately, these kinds of issues are not always obvious from the outside, which is exactly why regular testing matters. It can help identify hidden problems early, before they turn into major repairs.
There were several other leak entry points found on this van as well — but that’s a story for another post.
If you want peace of mind about how watertight your van really is, annual moisture and pressure testing is one of the smartest checks you can do.