Water in passenger footwell area?

[SebasSF]

As some of you may have heard, we have been having some much needed rain out here in California. As a result, we are also finding all the leaks in our rigs...
I put new caulking around the windshield in a break in the weather, and this is working really well. I also hit the mirrors.
All good except there is still water soaking into the nice mush of fiberboard and carpet in the passenger footwell area?!!
Any ideas on where this leak could be from?


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[streamquest]

Is the sliding window track overflowing?

[scamp]

I'm not familiar with your rig but being a auto tech for 34 years a lot of people forget that the a.c. System if the drain line gets plugged can overfill the evaporator case and leaves the floor area around the passengers feet very wet and sometimes the drivers floor depends on vehicle design. The drain line gets plugged when leaves enter the heating ,cooling system from most vehicle hood area near wipers then they brake into small pieces once they hit the evaporator coil and then fall down in the case to the drain area and then plug the drain ,once the a.c has been running for awhile and remouve moisture from the air and then drips into the evaporator case but can't drain do to the blockage the tray overflows in the floor of the vehicle.

Don

[PeterH-350LE]

Originally Posted by SebasSF

As some of you may have heard, we have been having some much needed rain out here in California. As a result, we are also finding all the leaks in our rigs...
I put new caulking around the windshield in a break in the weather, and this is working really well. I also hit the mirrors.
All good except there is still water soaking into the nice mush of fiberboard and carpet in the passenger footwell area?!!
Any ideas on where this leak could be from?


Sent from my iPad using Airstream Forums

As Steamquest said, check your track drainage and you may have to take your interior side panels off to see if Airstream installed drainage tubes in your model. They may be clogged. It all has to do with the overall poor design of the windows and the use of the terrible track material, that rusts and clogs drains.
I even installed drainage tubes on my 79 model, years before Airstream added them, since I was not able to stop the leaking.
If your channel material is the metal kind, you may want to consider changing to this rubber/felt material:
AS1268 Flexible Flocked Lining All-Rubber | Hi-Tech Glazing Supplies
It allows you to cut precision drainage holes, confirms tightly around curves if you slice it on the back every 1/4" at the curves and best of all its cheap and does not rust.

[Isuzusweet]

All of the above ideas are great plus one more....Check your clearance lamps. I removed two and found misplaced drill holes that hadn't been sealed up properly.

[dadstoy]

Hi SebasSF,

As others have said your leak could be from any or all of the sources mentioned. I had the same issue with the passenger floor in the cab. Fixing the damage isn't as bad as it may seem, but finding the actual water leak is a nightmare.

The water that damaged my floor was coming from the top of the windshield area and dripping down the center windshield post. The dash area next to the windshield would fill with water and then leak down the right side and onto the floor.

Issue is that to this day I really don't know where the water is actually getting into the interior. I try to seal the windshield gasket and the windshield still leaks. Once I stop the water from running off the front of the awning rail and down the side of the MH, then my windshield no longer leaks. I'm assuming the water is getting in at the front cap seam or at the top of the front passenger side window.

In fixing the floor, I cut out the worst section of the plywood and patched it. Some of the remaining plywood was only rotten on the first layer or two. I dug out the rot and repaired it some wood filler. I didn't worry about making it look pretty since it would be covered with carpet.

During one of the many, many times I was "under" the dash, I also hose clamped all the A/C evaporator drain lines as scamp has mentioned.

[TerraYacht]

As Isuzusweet said, I found that the clearance light sealing had dried out and shrank and cracked. One of my parts/repair people confirmed this, said his FIL had the same model as me, and I resealed before the big rains and it is still dry! The front cap to roof is usually visible when you are on tip, but these lights are more challenge to inspect and repair.