rear door seal/SMB fabric leaks

[jkinpdx]

Hi all,

I’ve had my van — built by SMB West — for about a year and a half, and from the beginning it's had a pretty serious leak issue in the interface of the rear door seal and the lining fabric. SMB/Field installs their lining fabric by wrapping and gluing it around the lip of the rear door opening, and then re-installing the rear door seal over that fabric. It results in a very clean-looking finish on the inside, but the big problem is that you have the vehicular equivalent of having your living room window curtains go out through the top of your windows and into the gutter on the roof. Any rainwater runs down along the door seal and soaks the fabric, which then wicks the moisture into the interior of the van. And in western Oregon there’s a challenging amount of rain.

I picked up the brand new van and immediately parked it while I was away for a few months, then returned to find the back full of mildew, and with hardware starting to rust. The lower outer edges of both doors leak, with the driver’s side being especially bad, and there’s an even larger wicking leak in the top center, with the moisture absolutely saturating the fabric several feet into the van, around the speakers and lights in the ceiling.

SMB West became Field Van shortly after I took possession of the van, and I got in touch with Field about the issue. They basically said “oh yeah, that occasionally happens, all you have to do is trim the fabric so it’s behind the seal." Well, the fabric did indeed extend out a bit past the seal in places, but it didn’t really correspond to where the leaks were. In any case, I did trim back all of the fabric so the edge is well within the rubber door seal, and it’s essentially done nothing to improve this. (I also tried putting some silicone on the edge of the fabric in one of the worst parts.) It seems that rain water runs down well under the edge of the seal like a gutter, and just trimming the fabric back isn’t enough to prevent this.

I can’t imagine that I’m the only one who has seen this problem, especially given that it’s happening in three different locations for me. I was describing this situation to the (rather strongly-opinioned) owner of a local van conversion company here outside of Portland, and he interrupted me as I started explaining, saying “…and the fabric is under the seal and wicks moisture into the interior of the van? Yeah, that’s a terrible idea, and it’s why we don’t do that.”

I’ve attached some images to show what’s going on. Areas marked in red on the first image end up completely wet, and it will extend farther the longer it rains. In another photo you can see some hints of the rust on the framing hardware around the water plumbing, but I assure you it has nothing to do with the plumbing, I hadn’t even run water through this plumbing yet when the problem appeared. Other images showing the fabric and trim are after I’d attempted to remedy the issue by trimming fabric back so it’s entirely under/behind the rubber.

Has anyone else seen and remedied this? I’ve noticed that Field Van still seems to be building their interiors this way, based on Instagram images. This is an extremely frustrating issue to have with a new van, especially for someone living in someplace as rainy as Oregon! Hoping someone has some advice or wisdom to share.

[SierraHawk]

Warranty should cover this. California has a lemon law you should get familiar with. Biggest problem is shuttling the van from Portland to Fresno and back.

[Scalf77]

I would say that fabric should have never been wrapped around to out side period. At a minimal it should have been trimmed to only be on the inside.

There was also a thread on a roof cap, that was being pushed out on some sprinter vans , by some part of the sportsmobile roof panel. https://www.sportsmobileforum.com/fo...e-16458-2.html It is kind of old so you would think SMB had a handle on it, but then I would have thought they had a handle on the fabric wrap also.

greg

[Kibo]

Trim seal typically has one or more barb-like tongues on the inside of the grooved portion. For example, take this image from Trim Lok:



I think you will want to do two things:

1. If the channel has a tongue on only one side, make sure the tongue sits towards the outside of the van. If not, remove it and re-install it with the tongue on the outside.
2. Since the tongue is what provides the seal, this needs to sit directly against the body metal. You will need to trim the fabric back beyond this point, meaning it can't wrap around the edge like it does now. Personally, I would trim it even with the edge.

Note that the trim seal is designed to fit only a certain width range, and by removing the fabric on one side you've essentially made it a looser fit. I suspect the seal will be able to accommodate this very slight change, but you may need to squeeze the channel (by hand) all around before re-installing it.