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Leaking through the roof by back door

14728 Views 19 Replies 14 Participants Last post by  sschefer
I just bought a new 2015 ford transit cargo van not even 1000 miles and is leaking by the rear door. I think is coming through the roof not the door since the water was about seven inches from the door in a can holder that I have in the back anyone having same problem
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Check on the roof to see that the little caps where the roof rack goes are still there and sealed - seven inches from the rear door is roughly the position of the 4th roof rack position I believe.
Mine leaked there when I pulled the factory plugs and installed ladder racks.
brittles....how did you fix your leak....i am about to install rack...maybe not now...thanks
My Alurack (pics in one of my threads) leaked at the mounts. It came with rubber "washers" but they didn't cut it.

I pulled them off and applied a bead of clear silicone caulk in a circle around the bolt holes on the roof, stuck the rubber to it, then bolted it all down. Solved the problem.
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I have yet to solve my leak. Tried Teflon tape on the threads and that didn't work. Kinda hard to explain but my next step is to get some spacers the correct length and rubber washers.

I only put the racks on as needed so right now I have the holes plugged with short bolts, metal fender washers, and rubber fender washers.
garden hose. start running water over the roof and go inside to watch for leaks. use a bright flashlight inside and watch for the seepage. It may be on a seam where the roof joins the sides.
I have yet to solve my leak. Tried Teflon tape on the threads and that didn't work. Kinda hard to explain but my next step is to get some spacers the correct length and rubber washers.

I only put the racks on as needed so right now I have the holes plugged with short bolts, metal fender washers, and rubber fender washers.[/QUOTE

Teflon on the threads is pointless. The threads sit below the sheetmetal. Caulk (sealant) underneath and around the brackets for the roof rack or little plug when there is no rack should prevent leaking. I had a small leak after the roof rack installation at the rear left bracket even though I installed everything with sealant. Added some silicon, which fixed the problem. I don't like the Ford roof rack mounting system and nowhere in the rack installation docs does it mention to use sealant. You would think that the rubber pad would seal everything but it doesn't.
Not sure I agree that the teflon is pointless.
Water is insipient and has a way of finding its way through any breach. After I noticed a leak (after installing the Ford rack system) I did both the sealant on the boots and teflon.....double the defenses....
Sounds like a fairly common problem. My rack is aftermarket (Vantech) but surprised to hear the Ford rack leaks as well.
I think you should leave the silicon at home for this and treat it like we do on the water...Try 3m 5200 (white or black). This stuff is great, but messy....use a roll or paper towels and miner spirits to clean up.....put it on the threads and just under....bolt it down to where it just starts to squeeze out....clean it up and stop....the next day, tighten it down.....permanent bond! And last in the marine environment for years....so on land this would be nothing!
No ladder racks on mine nothing on the roof
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I just looked at the plug and is right in line where I found water thanks for the tip I'm still taking it to the dealer on Tuesday to have the " water expert" look at it but I'll mention that to him thanks again
In my 1960-1976 seagoing steam Marine Engineer days I would never agree to sail a ship unless I had plenty of live rubber in various thickness. Same deal with emergency pipe repair clamps, lots of Red Hand and Cordo-Bond.

Example:

http://www.hannarubbercompany.com/sheet/pure-gum-natural-rubber/

We bought bulk products and cut our own gaskets. We used live rubber for fresh and seawater bolted pipe flange gaskets. I have a few small pieces around here I use now and then.

Greg Hayden
Vista, CA USA
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The roof of my van including the plug/cap/thingamajig above my rear passenger door met some branches or a low overhang prior to me taking ownership. It leaks while raining. However, I am going to have my roof linex-ed so it should seal it up! The others plug/caps do not leak.
leftover Dicor lap sealant from my roof vent has sealed up every hole in my van, and there are many of them, no leaks so far
Not sure what's up with the roof leaks. I had one also. I took a wire brush and got up under the seam seal. A lot of dirt came out. I followed that up with a good acetone scrub and then sealed both sides of the seal with clear Dap gutter sealant. Now I'm just waiting for another heavy morning dew to see if I got it or not.
Not sure what's up with the roof leaks. I had one also. I took a wire brush and got up under the seam seal. A lot of dirt came out. I followed that up with a good acetone scrub and then sealed both sides of the seal with clear Dap gutter sealant. Now I'm just waiting for another heavy morning dew to see if I got it or not.
I haven't noticed any leaks in my 2016. There's five thousand miles on it since early July. That 5000 came because I did a 2 state ZIP code change. It's in the driveway, unless we go out of town.

It works at storage right now for a lightweight things. I'm in it once a week.

Suitcase
Here is a look of the linex on the roof. The color came out slightly lighter than I hoped but I am quite pleased. As aforementioned, my van had a run in with a carport or a tree and needed some love up high. I will never have to worry about waxing the roof! Next asthetic project is the window tint with air 80 in the windshield.

Edit - the color is gun metal grey but looks tan in the pics. I was trying to match the grey plastics bits on the bottom of the van.

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Here is a look of the linex on the roof. The color came out slightly lighter than I hoped but I am quite pleased. As aforementioned, my van had a run in with a carport or a tree and needed some love up high. I will never have to worry about waxing the roof! Next asthetic project is the window tint with air 80 in the windshield.

Edit - the color is gun metal grey but looks tan in the pics. I was trying to match the grey plastics bits on the bottom of the van.
That came out pretty nice. I've got my leak stopped now but if it happens again I may just go the Linex route.
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