westend wrote:
If it was me, I'd be getting a pressurized leak test done to discover if there are other issues like the roof or walls having leaks. I do the pressure test using a furnace blower, directing the air in through a window and spraying all over the exterior with a spray bottle of soapy water. I've seen where other guys use a leaf blower or a commercial fan, anything that moves a lot of air will do the trick.
Here's a leak I discovered when doing the test:
![](http://i16.photobucket.com/albums/b7/mowerman_/The%20Hilton/IMG_0001-119.jpg)
I don't mean to start a mud-slinging contest, but I've put a great deal of thought into this whole idea of forced air leak testing. I know that some of the manufacturers do this, but the entire concept makes little sense. In what real world application would a leak ever be created due to interior forced-air? Trailers, like houses and buildings, aren't suposed to be a "sealed structure". They need to be able to breathe to some extent. Windows, doors, none of this is sealed. Just because you have an apparent leak due to the forced-air test doesn't necessarily mean that you have an actual water leak from the outside-in. Butyl tape is a flexible gasket, not a sealant. Forced-air creates a totally unnatural situation.
Or you can do your test, fix whatever leaks you think you have, take the rig for a drive, come home and repeat...and repeat...