Honda Odyssey Roof Rack Leaking 

This is not the proper way to fix a leak in this area. Once you remove the rail like you did, you can see that there is already some seam sealer applied in the channel to the vehicles outer edge. It is only to seal the seam where the two metal panels connect. The channel need to be well cleaned and this area only resealed - silicone caulk is fine. The amount needed is very small and only needed right at the seam where the old material was. Do not fill the entire channel like was done here. The channel is designed for water to drain out either via the back or the front through the front windshield drains. If you see evidence that there is leakage at the actual bolt insertion points, a small amount of sealant can be used right at the base of these. The approach shown here will never allow for trim removal in the future and any water that gets in the channel at this point will never be able to drain. There are multiple posts on this on the Odyclub forum. I just resealed mine the other day (both sides) and I only used a couple of ounces total of silicone sealer. Actually cleaning the channel so that water can drain out is probably the biggest advantage of removing the rack and trim. It is a sample gravity drain system, but that won't work when you fill it all up like you did in this repair.

Thanks for shearing the video how to do proper work and remove the strips seal roof on Honda odyssey,I didn’t know how to do it ,without knowing this video I will not having be done ! Thanks again sir 👍👌

Im stuck in my odyssey right now because of the storm, watching this while my roof is leaking! Heading to Autozone.

Thank you so much Razor for taking the time to make this video. Had the same problem with a 2010 Odyssey. You helped me a lot. Broke the rack tring to pry it. Water coming to the inside in the same area.Keep up with those good videos. The thing that I like the most is that you were not an expert, you said it, and still you wanted to help. You did! Thanks a lot.

appreciate the camera showing the process.

Thanks for the video! I have a leak in my 2009 odyssey that I am fairly confident is from the roof rack screws, its towards the back end on the drivers side, right about where the third row seatbelt is located. I definitely need new weather strips, but hoping this whole process just temporarily solved our problem! We will be having our 4th and final baby in April, I also babysit our nephew who will also have a new sibling in March, needless to say, I need to be able to use ALL of the seats in my minivan lol. Will update the next time it rains or I wash it!

I'm definitely going mask off the ridge on my civic when I'll do this work. Also just use a very roomy bit. I was kinda in shock when I saw the amount of silicon you used?!? Also kinda baffled the strip would even go back in. Looked like you filled the complete water line. Guess it won't leak very soon

I appreciate your work here. But as others have noted, that’s way too much of a mess you’ve created. Simply covering the tiny hairline crack that is in your seam sealer is all that likely is required. That’s how I fixed mine. Mine was so bad that I had the dreaded MICU water intrusion, causing the van to behave like it was possessed - the rear ac relay cycling even with the key out, lights on the dash staying on, battery dead in hours, alarm sounding in the middle of the night, etc. I filled the crack under the weatherstripping and haven’t had a problem since. That was 4 years ago. However, I think it’s way overkill on a van of this age to grind everything out and replace the SS. Simply cleaning the channel and covering the crack with sealant (I used OSI) has worked great for me. She’s in her twilight years now. No reason to replace a hip if she ain’t got feet to walk (her years spent in the NE have taken their toll).

Thank you! Exactly I noticed they're coming in everywhere where the bolts are in my roof and I don't need mold

the video was helpful

This is not a proper leak diagnostic or repair. Sealing that molding to the roof is not the answer. See how the rack is mounted onto studs that do not penetrate the roof skin? water is supposed to flow in that channel under the molding and make its way off the car to the front or rear. Keep looking, the leak is likely a body seam or sunroof drain

Appreciate your effort here. If you want a durable, permanent repair I’d use a urethane caulk, $6. Or a body seam caulk $50.

I'm in the process of doing mine now. I applied marine sealant. I have new weather striping.

Hi Razor, I have a 15 MDX, and I found the joint of Front passenger A pillar trim and the headliner area is wet when it rains, after I pull off the front right headliner, I found the drip was coming from the roof of the front passenger side grab handler, and above it, it is the roof rail mounting hole, and question is, I am not sure those thread that mount on the roof rail, was it weld through the roof or they actually weld it on the roof, because if they weld it on the roof, it's impossible to leak inside.

This video helped me a lot

It’s Not the Roof-Rack or trim causing the leak. It’s the spot welded roof seam. You must scrape out the dried out factory Seam-Sealer. Sandpaper prep the channel, & spread Eastwood Seam Sealer into the channel with a brush. RTV won’t work.

Thanks for the video. very helpful. Can you tell me how the weatherstrip attaches to the metal molding that it covers? Does it just snap in place? My weatherstrip ('06 Odyssey) has dry rotted and the section on the passenger side in front of the roof rail is flapping in the wind, literally. The metal molding I can see underneath looks intact. Just need to know if I can purchase replacement weatherstripping alone and how it attaches to the metal molding strip underneath. TIA.

Did this end up fixing your issue? I have a leak that I believe to be coming from the roof rack. It soaks the b pillar and seatbelts. Super annoying.

How you replace the door weather stripping, and which one was it?

Thanks for the video. Where can I buy the weatherstrip? I found the whole assembly (74306-SHJ-A21/74316-SHJ-A21) on several web sites. But I don't need the assembly, just the weatherstrip.

How is the repair holding up? I'm about to do a 2010 model, similar procedure tomorrow.

Sir , I would like to know about that charcoal colour material which you have used. It's properties , for that u have used

Did you check if that rtv silicon is acidic? I read if so it can from rust

Any reason why RTV silicone is used instead of outdoor metal and aluminum silicone?

Hell my van is only 4 years old and it's leaking and I think it is the roof rack

Damn, i thought its only on my odyssey

Can you give me the link to those products that you used or the name and where I can buy it

Can u sell it to me.

What year is the van you have

Can u sale that to me

Did you stop the leak