Saturday, September 23, 2023


Ask Dave: My RV’s windshield has a leak. Where can I get it fixed?

Dear Dave,
My RV’s windshield had a leak when it rained. We also noticed rust crumbles on the dashboard. Where’s the best place to take it so all the work can be done there and not farmed out to somewhere else? —John, 2007 Winnebago Itasca

Dear John,
The recommended fix for your RV’s windshield leak depends on the model Itasca you have. Winnebago Industries manufactured the Winnebago brand and the Itasca brand. Both had various models such as the Winnebago Adventurer and a similar model, the Itasca Suncruiser.

All of the Class C models had a one-piece windshield that came with the automotive-style cab from Ford or Dodge.

The Class A models all had a two-piece windshield that was bonded to the steel cab substructure with non-hardening automotive-type adhesive.

As you can see from the 3D diagram available on the 2007 Adventurer, each windshield is mounted to a substructure that has a steel frame around the entire perimeter. Most Class A manufacturers used the fiberglass cab with a hole in it and installed what is called a floating windshield with rubber molding “zipped” around it.

Winnebago RV windshield leaks

Typically, what I have found when a Winnebago Class A leaks at the windshield is that it’s actually a leak from either the clearance lights or the front cap-to-roof seam that has what is called a “J” channel. Here, the water enters and collects on the upper steel bulkhead or tray and sloshes around depending on the angle of the rig. One time when I was driving, I got a shower when I turned a corner and the water ran to the driver’s side!

The rust flakes that you see on the dash indicate the metal framework has had repeated moisture and is rusting.

If you have a Class C that has a windshield leak, I would contact an authorized chassis repair facility such as Ford or Dodge and ask if they work on RV chassis. You can also contact your local Winnebago or Itasca dealership and find out who they use. Most RV dealers sub out windshield work to a local glass repair shop.

If you have a Class A, then I would contact the local Winnebago or Itasca dealer and ask if they have a Sealtech machine to find leaks. This machine draws air into the coach and pressurizes it. The dealer technician sprays soapy water all around the windshield and top cap to find where bubbles come out. This is the best way to find a leak, as sometimes the water travels a long way before it comes into the coach. So where it leaks may not be where it is entering. You can read more about that here.

I doubt the leak is actually coming from the windshield adhesive, so taking it to a glass repair facility would not be the best as they probably are not familiar with the construction. A dealership would be the best to diagnose the leak and take the appropriate action for repair.

 You might also enjoy this from Dave 

Should I use a pressurized leak finder to find leak in RV’s sealed underbelly?

Dear Dave,
My 5th wheel is winterized. I used compressed air and blew out the water in the lines but I did not get the cover on for winter. I live in the Northwest, so rain and snow are a sure thing. I’ve found that my RV’s sealed underbelly is collecting a small amount of water. Is this a leak in the sealed underbelly? I turned to YouTube for ideas on how to look for leaks and found a video on how a dealership in PA places a positive 2-3 psi on the inside of the trailer then soaps the outside looking for leaks. Have you ever heard of such a process? Do you know if this is a good or bad idea? Your thoughts, please. Thank you. —Mary

Read Dave’s answer

Dave Solberg is a leading expert in the RV industry and the author of the “RV Handbook.”

Read more from Dave here


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Dave Solberg
Dave Solberg
Dave Solberg is a leading expert in the RV industry and author of the “RV Handbook” as well as the Managing Editor of the RV Repair Club. He has been in the RV Industry since 1983 and conducts over 15 seminars at RV shows throughout the country.


  1. Great information shared here and a few things to add:

    1. If you see signs of rust relating to the frame surrounding your windshield, this needs to be addressed. The process requires sanding down the steel frame to eliminate all rust and resealing it with a primer before you replace your windshield. A qualified glass shop or RV repair center can perform this work. If left untreated, rust will continue to spread, the way rust does, and can eventually lead to a compromised frame opening (pinch weld) for your glass to adhere to. Rust can also cause your windshield to leak by compromising the urethane adhesion to the glass.
    2. As Dave mentioned, while a leak may present itself around the windshield, it is often due to marker lights, roof vents, roof seams or antennas installed on the front cap or roof. There is a process of elimination you can perform yourself that may save you some time/money. Go here to watch a quick DIY video shared by RV Glass Solutions.
  2. If you need windshield work, the only place that I would recommend is called RV Glass Solutions. They have locations across the country. They only use glass from a company called Coach Glass.


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