RV Wall Repair Do It Yourself – Exterior and Interior – Water Damage Wall

Paying close attention to the part of your RV wall that needs repair will help you prevent greater problems and higher costs in the future. In the following, we’ll discuss some of the things, that you need to know in doing the repairs for yourself. If you’re ready, let’s begin and learn how to do some fixes to the wall of your RV.

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RV Interior Wall Repair

The first common issue is interior wall damage. In order to repair it, follow these steps.

Case 1 Changing the paneling

  • RV wall repair do it yourself tape off everything
    Tape off everything to cover what needs it to ensure that those covered areas be protected from the Rust-Oleum, liquid nail and expansion foam.
  • apply rust oleum rv leak seal rust inhibitor
    Apply Rust-Oleum RV Leak Seal Rust inhibitor. Use two coats of it or as much as you think is needed. Let it dry overnight.
  • travel trailers repair apply liquid nail
    Apply liquid nail, a synthetic rubber multi-use adhesive, which is solvent-based and with a non-runny consistency. It can deliver us with a lasting and consistent bond of most substrates.
  • rv-interior-wall-repair-insulation-back
    Get all the insulation back in its proper place before proceeding with the next step. Make sure that it is properly positioned as it was before.
  • How to repair travel trailer walls expansive foam fill gaps
    Apply the expansive foam to cement everything. Fill gaps and do it carefully.
  • rv interior wall repair cut excess foam
    Cut all the excess foam. Let it set overnight. Use a little saw to make sure everything is flushed.
  • rv repair paneling
    For the paneling, use a big construction paper and cut it out to figure out the edges and corners especially for weird shapes.
  • rv wall repair do it yourself cutout
    Lay the cutout on a panel board just as you can see in the photo above. Mark the shape and cut out using a jigsaw.
  • diy repair interior wall rv panel
    Get the panel onto the wall and use a liquid nail to attach it.

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Case 2 Water damage in the RV wall

  • repair camper walls remove screws
    Remove curtain rod holder. If the screws are rusty, beat them with a hammer. Remove all the screws.
  • rv cut out the paneling based
    Cut out the paneling based on the measurements you have set it for, and do it right the first time to ensure you don’t have to repeat the process.
  • rv remove insulation block
    Remove the insulation block using a flat bar just as what you can see in the photo.
  • rv repair remove rust
    Check for any rust, and remove all that you can see. Get rid of the big flakes and smooth everything out as possible.
  • rv paint
    Tape all the areas you never want to get paint on.
  • rv-water damage wall repair insulation
    Get a liquid nail and apply it generously. Take your insulation block and get it back into place.
  • rv repair foam
    Check the gaps and use the expansive foam to fill them up. In the next day, you should remove the excess foam.
  • replacing rv wall paneling
    Fit the paneling properly into place.
  • rv wall repair replace plywood
    Replace the plywood back into its position and screw it down at an appropriate depth to prevent screws hitting fiberglass etc. Screw with as many as you think necessary.
  • rv wall repair diy replace putty
    Fill the entire gap and wipe it down. Use color putty for this application and cover the area well.

And for the results, let us try to compare with some before and after photos.
Before, with all the mess mold mildew

rv water damage wall repair before

Here is the end result with the new plywood up.

rv water damage wall repair after
RV wall repair do it yourself new plywood
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Tips for other cases

RV Fiberglass Wall Repair

To make small repairs on the fiberglass wall, prepare the things, including drill, breathing mask, eye protection, gloves, sandpaper, fiberglass repair kit, auto body filler, and foam insulation.

  1. Wear eye protection, gloves & a breathing mask. Remember that fiberglass can be stuck in your skin. It is also unhealthy to inhale.
  2. Using a sharp knife, you can cut away the damaged portion.
  3. Repair the insulation located behind the sliding if deep holed. Use expanding foam insulation on it and let it dry. Sand the excess foam insulation to level it with the rest of the insulation.
  4. Mix auto body filler, apply to the hole & let dry before sand flushing.
  5. Repair the fiberglass by applying it over the filler. Allow to drying before sand flushing.
  6. Paint the repaired area. Choose the correct color of the touch-up paint.

RV Foam Wall Repair

Another walling material to repair in your RV is the foam wall. Here is what you need to do.

  1. Get rid of the hole debris. Take all the drywall or plaster pieces clinging to the hole’s edges.
  2. Use some old newspaper to stuff into the hole. Be sure to arrange that at the bottom because it needs to support the spray foam later. Make sure that the area behind the hole is clear.
  3. Spray foam into the hole but only up to ¾ of the way because the foam will later expand to fill the hole.
  4. Allow the foam to harden. Usually, it will take up to two hours. After, you can cut flush it to the wall surface with a utility knife before shaping it to concave.
  5. With a drywall joint compound, use a layer of it to the hardened foam. Scrape the joint compound flat using the utility knife and then letting it dry overnight. Again, apply a coating before scraping to finish the task.
  6. Start sanding the final coat you have just applied when dried. To finish the job, prime the patch using PVA wall primer before painting it.

RV Laminate Wall Repair

Delamination is one of the major issues that have been plaguing many RV owners through the years. When this happens, there is usually water regression in the Luan, also called the interior panel & the film sheeting outside.

Due to the moisture buildup, the adhesive quality will be compromised, resulting to warping or bubbling found on the surfaces.
In some cases, it may be worth repairing but not in all. For the small cracks or punctures, you can repair them or take them to the auto-body repair shop or RV dealer.

With the aluminum siding, you can also find specific gel-coat-type waxes and cleaning products in order to keep the RV looking new.

RV Shower Wall Repair

Check out the following for tips on how to repair the RV shower wall.

  1. Turn the water supply off.
  2. Take the shower access panel out. If you cannot find the panel’s location, you should consult the RV manual.
  3. Locate and reach through the panel space. Disconnect both the cold and hot feeds, the pipes starting from the faucet assembly going to the showerhead, and the vacuum breaker.
  4. Remove fitted accessories. Remove shower walls. If your RV shower is not sectional, you can take the uppermost piece out first and then work all the way down towards the pan. In some cases, there may be brackets holding the panel to the enclosure. You can find them through the panel hole.
  5. Lift the shower pan, but avoid damaging the plumbing that carries the used water to the grey holding tank.
  6. Measure the exact size of the shower enclosure to buy a matching replacement.
  7. Read and follow the entire installation instructions that come with the replacement shower.

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RV Water Damage Wall Repair

For water damage, expect a further challenge in the DIY task. Check out the following steps.

  1. Prepare a tape, 80-grit sandpaper, 60-grit sandpaper, epoxy resin or wood hardener, putty knife & wood putty.
  2. Look for water leak sources to prevent more water damage.
  3. If the leaks are entering through the windows, apply RV caulking.
  4. You can also patch up exterior siding and roof with waterproof tape. Apply it carefully because it will not come off once its backing sticks to the trailer.
  5. But for major exterior siding or roof repairs, you might want to ask help from a pro because it is labor-intensive.
  6. From the inside of the camper, look for all areas with water damage. Check the ceiling, floor & walls for signs as well as mushiness.
  7. You can also repair damaged wood in the wall by pulling off the loose pieces and smoothing the wood grit remaining using 80-grit sandpaper. Paint or spray-on epoxy resin or wood hardener. It will not just repair and harden the wood but will prevent mold growth, too.
  8. Apply wood putty after 24 hours in order to harden the wood. Use putty to fill the wood indents that resulted from the water damage. Dry the wood putty and sand it using 60-grit sandpaper to smooth it.
  9. Install the new paneling or wallpaper.

There you have some of the most common wall problems and fixes you can do yourself. But in the case of major repairs, you might want to seek help from a pro.
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  • Ron Booker says:

    I like that you said that in order to repair a fiberglass wall you need to have tools, such as a mask, fiberglass repair tool, auto body filler and many more. My friend talked about fixing the interior of his RV. I’m going to suggest to him about taking it with a professional that has all the tools needed.

  • Callum Palmer says:

    This is a great how-to that you wrote up here. Now for me and my trailer, I need to get some of the panels repaired. I think if I followed your guide, I could manage to do some of them myself. However, they are badly damaged so it might be best to go with a professional for this one.

  • Sergeum says:

    Mark, I usually add some L shaped steel brackets along the exterior walls and to the new flooring to increase the stability of the walls when traveling. This allows one to simply replace the flooring up to and not beneath the walls.

  • Rita Sanders says:

    It’s helpful that you said to wear eye protection and a breathing mask so that fiberglass doesn’t become a problem. My trailer has a giant crack in the wall so I’ll be sure to fix it soon. I bet these tips will be helpful!

  • RV Roof Repair says:

    Some repairs need professional expertise but some repairs can be done easily with Liquid RV Roof. Liquid RV Roof is a true DIY product which can restore the old RV roof at a fraction of cost of roof replacement. With only a single coat it also saves labor and material costs. Serving the rv industry for over 27 years.

  • Jeanne K Eagleson says:

    I am doing a remodel on my class A and I thank you for your information and definately people, wear a mask and glasses, there isn’t much worse than fiberglass particles in your eyes or mouth (been there!) also the wood, mold, potential rodent feces, and bugs are to be considered as well! Peel and stick wallpapers and tiles are great for bathroom and kitchen walls after your new panel is in place, they are smaller walls and easier to work on and nicely separates living areas without much fuss.

  • John says:

    I have a pop up camper with water damage on one corner which is were the bracket to raise the top is located. The bolts from the bracket have started to tear through the interior wall. The damaged area is about 24″ across the top. Any ideas on how to repair this section of the wall and the bracket that is attached?

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