Removing Moldy Diamond Shield From An RV

We all have to do lists, right?

And sometimes those to-do lists get neglected just a bit.

Am I right?

Well, sitting atop my to-do list since we bought our RV was getting the dirty, ugly, nasty-looking Diamond Shield off the front of the RV.

Diamond Shield sounds great, right?

Sounds almost bullet proof.

Well the point of it is to protect your front end from rocks that get kicked up at you while on the road.

Most of the time when an RV has a Diamond Shield on it, you don’t even know it’s there.

It’s a clear film that covers the entire front end.

Apparently around 2006, the product wasn’t so great.

I haven’t gotten a straight answer on what the deal was, but either the product allowed moisture underneath the film or there was a problem with the application process.

Either way, the moisture that was under the film ended up molding and turning the entire front into a dirty-looking brown with dark mold spots all over.

I talked to several other RVing folks that either had the same issue or knew someone who did.

They recommended different products or places to go to get it fixed.

I took all of their advice to heart.

I looked into the products.

I called the places to get estimates.

I had a long talk with Diamond Shield themselves, hoping they’d feel bad for me and offer to do it for free since their product was junk.

No dice there.

They said they’d be able to take it off for around $1,500 and that didn’t cover any paint damage that may occur.

Then to top it all off, they wanted another $1,200 to put another film on.

I was like, hold up, I saw how the last one turned out, not sure I want to try that again.

So, after countless hours researching the RV groups on Facebook, other RV forums, and talking with Newmar, my RV manufacturer, I was at a loss.

There were so many different methods people were talking about, and the biggest thing that scared me away was the time commitment people were saying it needed.

I was looking at a minimum 24 hours of scraping.

Well, you know what happens when an information overload is dumped on someone, a huge feeling of being overwhelmed, then nothing.

It stayed on my to-do list, with every intention of starting, but no definite plan on when. (See lie No. 7 at

As fate may have it, we pulled into a campground and a guy one row ahead of us was out in front of his rig working away on something.

I got curious and “took the dogs for a walk.”

He was working on the exact problem I had, so I had to stop and chat.

His name was Bruce and he was more than willing to share the knowledge he learned by working on his.

He wanted to pay-it-forward and hopefully prevent some of the mistakes and time drains for the next guy.

Well, I was the next guy!

We talked for a good 20 minutes and by the time I was ready to leave, he had given me one of the nylon scraping tools that he was using (which was the last one he had in the pack), the name of the solvent he was using and details on each step of the process — which I’ll get into in a minute.

I went back to my rig all fired up to get started.

Then the kids wanted to go to the park — priorities, right?

We went to the park and when I got back there was a box on our step.

I opened it up and it was another tool that Bruce used that he was now done with.

This guy is pretty great.

I walked over to thank him and after talking for a bit longer, he ended up giving me the rest of the solvent that he had left.

It was about a half gallon.

He also threw in a funnel just because.

Armed with all the tools, supplies and knowledge, I was ready to start.

Supply list: Everything You Need to Remove the Diamond Shield Yourself

So here’s the process on how to get the Diamond Shield or 3M off your rig.

To do this, you’ll need the following:

Step 1 — Removing the Diamond Shield

The first step in the process is to get the film off.

Bruce said this was the hardest part for him, but turned out to be the easiest part for me.

He had a 3M product on his coach and I had Diamond Shield.

Supposedly, Diamond Shield is a thicker mill film, so it came off in larger pieces, which made it faster for me.

To get the film off, I used the clothes steamer and the scraper tool.

I also had some sand paper for when the edge of the scraper tool got a bit dull.

Use the steamer to steam a small section of the film.

You’ll see the film start to sweat (yeah, it knows who’s the boss), then use the scraper tool to scrape it up.

It was just like peeling a potato.

You’ll scrape in straight lines on the section that you just steamed and the film will come right up.

You shouldn’t have to scrape too hard to get the film off. If you find yourself scraping too hard, just steam it some more.

You want to really heat the glue underneath to make it easy to release.

Do this all over the front end where the film is.

As I said, work in sections and be patient.

It will take some time and making nice, neat rows while scraping is the most efficient way to go about it.

After you’re done scraping all the film off, your coach will look WAY better, but that’s only half the job. Well, maybe not even half.

Step 2 — Remove the Glue

The next part is to get the glue off that is still on the RV.

This is also where the big mold spots are, so those need to be scraped off as well.

For this part of it, the Contractor’s Solvent is the ticket.

Get a spray bottle, you can buy an industrial looking one from the store or use the one your wife has in the bathroom.

I chose the latter.

Before you start spraying, you’ll have to do something with your headlights.

The solvent made the plastic headlight covers on Bruce’s RV very hazy.

To the point he is going to replace them.

So you have two options here.

You can remove the headlights if it’s not too much trouble, or you can tape over them.

I taped over mine with blue painter’s tape.

It seemed to work pretty well, but there were spots where the solvent must have crept under the tape.

It’s not horrible, but I notice it.

You have been warned!

Load the spray bottle up with the solvent and start at the top.

When scraping off the glue, it will sometimes crawl down the front of your rig.

The glue is still a bit sticky, but also slippery, so it’s kind of a slime that can get stuck on lower parts of the rig.

You don’t want that ending up on a section you’ve already cleaned up.

I speak from experience.

I found it easier to see what I was doing by removing the glue in sections.

Covering the headlamps prevents the solvent from fogging them.

Work in sections again and spray the solvent on your coach.

The solvent will most likely drip down the front, and that’s okay.

Give the solvent a minute or two to do it’s work, then spray it again.

You want the solvent to work dissolving the glue, but you also want it to be wet when you scrape.

After letting the solvent soak again for a minute or two and making sure it’s nice and wet, go ahead and try to scrape it.

The same scraping pressure applies here.

If you have to scrape too hard, there isn’t enough solvent on it or the solvent hasn’t had enough time to do it’s thing.

Have at it for a while and you’ll learn how long and how much solvent is needed.

From my experience scraping off the glue took much longer and was a much more tedious step in the process.

The glue isn’t cooperative and generally doesn’t come off in strips like the film did.

However, just work in small sections and again be very, very patient. It will work and it will look like new when you’re done!

Overall, it took me about four days to do my rig.

I was able to strip the entire film off in one day, putting in about eight hours on it.

The other three days were spent getting the glue off.

Over that three days, I worked less time on it since my patience ran thin.

I’d say about four hours each day.

Enjoy the Fruits of Your Labor

I’m so glad I took on this endeavor.

The rig looks like new and I love sharing this knowledge with other folks in the same situation.

A bad Diamond Shield is literally a black eye to an otherwise beautiful coach.

So, best of luck to you in getting your coach cleaned up and as Bruce said, pay this forward and share it!

Craig Royal

Craig Royal and his family of six, plus two dogs, have given up normal life to live and travel in a RV full-time. They want to live a simpler life where they focus on each other, share experiences, and see the world together. You can follow their adventures at: Web: | Twitter: | Instagram: | YouTube:

Click Here to Leave a Comment Below 21 comments
Penny J - December 1, 2017

Hi, thanks for the info. The solvent, are you talking about home builder contractor, something at Home Depot type stores?

    admin - December 3, 2017

    Hi Penny,

    Orange-Sol Contractor Solvent works great, you can find it on Amazon

Ed - March 22, 2018

Hi Craig!

Great info. What specifically do you mean by “nylon sticks”? Is there a particular product for scraping that you would recommend?


C&J Wojo - April 11, 2018

Bought our used Fleetwood Discovery and love it but that awful diamond shield has a mold look to the front on an otherwise nice looking coach. Thanks for the tips on our first project on it. I’ll take pics along the way and post to pay it forward too!

Matt - April 28, 2018

Sounds like a lot of work. I removed mine with a 15 degree spray nosel on a 3800 psi pressure washer. Looks like new and was easy as pie.

    Jim - September 11, 2018

    Matt – sounds like a much easier idea but I’ve not seen anyone else try this. Seems like the pros would use this unless there is a down side. I have a pressure washer (along with a bad diamond shield on my RV). Can you add more details? Did you use any heat of any kind? Did the pressure washer also remove the adhesive or was that a separate process? Any adverse affects that you are aware of?

    Cecilia - October 13, 2018

    REALLY, it didn’t damage your paint finish? What year was your rv. I would prefer to try your method but I’m nervous it will damage my rv. Any feedback from others on doing this?

    Robert - April 10, 2019

    Matt, I’m interested in getting a description of the pressure washer process you used to get Diamond Shield. Thanks

joseph lynch - May 7, 2018

I used the steamer and plastic razor blades bought here ( to remove the film. I then used Cut Thru Aerosol on the residue along with the plastic razor blades. Took about 8 hours but well worth it.

Tony Valentine - May 22, 2018

Yes Diamondshield/Durashield product sucks!
I have a 2016 fleetwood with 14,000 miles and they won’t honor their 5 year B.S. warranty.

They sent me a kit to remove ty he crappy film FREE , so I suggest everyone call for it.
Their parent company is

Contacting a lawyer to start class action lawsuit if anyone is interested.

    kevinpvb - January 17, 2019

    I’m interested in the class action suit. Mine is a 2011 Fleetwood Discovery. The ugliness is starting.

    I’ll contact Sharpline and see what happens.

    Joan - February 26, 2019

    I have a 2016 Holiday Rambler with 13000 miles and the same thing is happening with us. I haven’t contacted Diamond Shield yet, I was just on this site trying to get ideas on how to remove it…then I saw your comment. Any further info regarding your case?

    Mike - March 15, 2020

    I can’t believe my new Newmar Motorhome looks so bad. I have spent hours trying to remove the mildew and have decided to just repaint it. Much less than having it taken off and reapplied. DURA SHEILDBhas got to be the worst product ever invented.

    Sam Brown - April 8, 2021

    Li have a 2013 ItascaEllipse that bugs and road debris has destroyed the Clear Shield covering. Warranty is non existent . Coach only has 40,300 miles..
    I’m 85 years old and for me to physically remove and replace the mess is there any simple solution? I’m old but not physically incompetent even for a 85 year old Airborne Vet.
    Thoughts and suggestions will be appreciated.
    Shy Sam.l Brown
    Veteran 11th and 82 ABD

jim - September 12, 2018

Has anyone else tried a pressure washer as mentioned above. Seems to be much easier but I wonder why all the “pros” that do this every day don’t use it. Also, how would you get all the adhesive off?

Ed Felix - January 26, 2020

Dura shield molding dura shield said because of weather conditions where I keep it for extended times I have a 10 year warranty on it and they will not do anything

Billy Russell - April 7, 2020

I have a 2009 Dutch Star with the same thing and someone stopped by and told me he had same problem. He said he got some plastic scrapers from Harbor Freight and used his wife’s hair dryer and warmed up the plastic and used the scrapers to remove it. For the glue that remains he used gasoline and rag to remove it.
I am using the Pittshurgh Non Maring Scraper Set and the heat from the SUN and it takes very little pressure to scrape it off. As for getting the glue off I don’t know if I’ll use gas for that or not. When I remove all the coating then I’ll decide what to use for the glue. I’m a full time so I’ll just take my time doing it after I get the coach waxed.

Billy Russell - May 12, 2020

An update on the mold on the Dutch Star. I finished the job and so glad I did. It looks like a new paint job. To get the glue off, I went to Lowe’s and got 8 bottles of GOO GONE and sprayed it on and used a cheap plastic scraper, also from Lowe’s,and after spraying and letting it work in a little I just scraped off the glue. I DID NOT remove or tape the headlights a d sprayed the GOO GONE on them also and no damage was done. Even with no wax on it the front shines very well. Of the 8 bottles of GOO GONE, I RETURNED 3 for a refund and kept 1 for personal use. I did buy a can of Contractors Glue Solvent but it didn’t know as well as the GOO GONE. I’m more than happy with the way the RV looks now.
I did not remove the lettering on the front and the remover never affected it either. I used a small knife point and scored the plastic just enough to penetrate it and used the plastic scrapers to remove it from around the lettering. I only had 2 small paint scratches that can only be seen by looking very closely.

    Sharon Dunn - August 21, 2020

    Billy Russell, did you remove the plastic from the inside of the lettering on the front also? If so, how? Our lettering is on TOP of the diamond shield – I don’t know what IDIOT decided to do that! What size bottles of GOO GONE did you buy and specifically what kind of GOO GONE was it? I thought I saw some GOO GONE MAX online yesterday, so just curious what exact type you used. Thanks for any help.

Karen Buyno - March 20, 2021

I do not want to remove the diamond shield I just want to remove the mildew. Suggestions on how to remove mold?

James Hairston - July 3, 2021

I find it interesting that a brand new industry has emerged from the absolute ineptness in the creation of a RV “paint protector” (Diamond Shield! The Diamond Shield is so susceptible to contracting mold/mildew, the company offers a METHOD by which the shield can be removed! To add insult to injury, the company also strives to have the customer install yet ANOTHER shield of the same stuff! I, too own an RV (name w’held for legal reasons)which has become victim to the shield. Understandably, my RV is 15 years old and I expect some age-related problems to occur; however, the thing gathering mold and requiring many hours of manual labor by myself in order to correct the issue is not a viable scenario! I feel it should be, at least in part, a “shared” responsibility (myself AND Diamond Shield) in the correction the issue! I have not approached Diamond Shield, as I feel doing so would result in their refusal of accepting ANY responsibility and my becoming angry! I have done enough research on the issue that I realize the “big boys” have, have, once again laid it to the consumer and he alone to rectify the situation! In closing, I’ll simply remove the shield, restoring my RV to a sight much kinder to the eyes! I worked for several days removing the Diamond Shield from my RV and, “NO, Diamond Shield, I will NOT install a new shield! I’ll just continue to read the complaints and watch you sink slowly into the quagmire of dissent your R&D Department has created!


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