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topic 21436

Cleaning & Removing oxidation from Bronze Gravemarkers

A discussion started in 2003 & continuing through 2017


Q. Trying to remove oxidation from bronze markers of family members graves, In the past several years I have used about every commercial cleaner on the market. None have solved the problem. Is there a chemical solution available to individuals that will remove oxidation from bronze?

Would sincerely appreciate any information you can give me to solve this problem.

Charles S [last name deleted for privacy by Editor]
- Satsuma, Alabama, USA


Simple Green Cleaner

Q. I am also looking for a product or a method which will allow me to clean and restore two bronze grave markers of the type given by the VA to veterans. One has been on the ground for 27 years, the other only 18 months, but is still deteriorating or dulling.

Walter M [last name deleted for privacy by Editor]
- El Dorado Hills, California, USA


A. After trying many chemicals, I tried Simple Green with much success. I sprayed it on full strength, used a stiff bristle brush and then rinsed thoroughly. After doing this twice, I am quite satisfied with the result. Not quite like new, but not bad.

Walter M [last name deleted for privacy by Editor]
- El Dorado Hills, California USA


A. Well, one thing that I did that removed oxidation the best was a mixture of vinegar and salt together that makes a acid that removes the oxidation within a couple minutes. It worked great for me. Try it yourself =)

Morgan Miller
- Chico, California, United States


Vinegar and salt (or lemon juice and salt) is a reasonably strong acid that works fast. However, it can leave copper and brass rather raw and orange looking, and you may want to finish up with a commercial brass cleaner like Brasso [linked by editor to product info at Amazon] to give back that softer glow.

Ted Mooney, Teds signature
Ted Mooney, P.E. RET
Pine Beach, New Jersey


A. Addressing the issue of removing oxidation and discoloration from bronze grave-markers, if the problem is well established (a gray-green uniform coloration) your best bet is to consider having the marker sent off for reconditioning. Writer has recently tried "too many" web recommended products ranging from Simple Green, Whink, vinegar & salt, & Tarn-Away to Muriatic Acid [linked by editor to product info at Amazon], all with NO success ... indeed the markers looked better before with uniform deterioration. Internet research reveals there are a handful of companies that engage a process similar to sandblasting using tiny glass beads to do the cleaning and produce a product that looks like new. At which point unfortunately the decay process starts again but can be retarded by wax or a coat of polyurethane.

Skip C. Holmes
- Warner Robins, Georgia

before cleaning

after cleaning

October 19, 2013

A. I am an owner of Gravestone Cleaning Service LLC located in the Panhandle FL. I would like to add a couple of simple methods to make this process for the owners life easier in maintaining their loved ones bronze memorial. We restore these markers from the worse condition in hours and you can too ...

First brush the marker off and clean away debris. For a single size marker: Put 1/4 cup sea salt in 2 cups of white vinegar and mix until salt has dissolved. Mix flour with the vinegar and salt solution until you have a paste (like peanut butter). Put this solution on the marker with a small inexpensive paint brush. Make sure you don't see any part of the marker thru the solution; cover with large plastic bag laying across the marker and let it sit for 2 hours. The discoloration you saw will now be in the flour mixture when you remove the plastic bag. The flour mixture (poultice) will have green in it. Scoop up the mixture from the marker and place in plastic grocery bag. Next mix a little Ivory liquid soap in a pan of water. Use a bronze brush (can get at any hardware store) to clean the lettering and design and a natural or brush to clean marker with some of the remaining flour mixture left on the stone and the soapy water. Rinse with water. You don't want to scrub the painted area with the bronze brush because it will remove the paint.

In our experience, Brasso will also take the paint off the marker. To make the marker shine and protect it, there are UV waxes sold commercially on line, haven't seen any in store. But, you can use Johnson's paste wax and it will clean some of the leftover darkness on the stone as well as put a shine back on the marker. When the paint is destroyed or lettering is still tarnished, there is another process the owner can do rather than spend lots of money.

Lucy Cook
- Youngstown, Florida, USA

November 6, 2015

thumbsdownThis is a lot of absolute nonsense! Don't waste your time. After more than 3 hours spent preparing the bronze memorial, mixing the salt, vinegar and flour, and applying the gook, then waiting the prescribed 2 hours, then removing it, nothing had changed!
At last I picked up a bottle of Brasso [linked by editor to product info at Amazon]. That, along with some rags and a little elbow grease, gave the results. I then applied a few spray coats of exterior gloss finish clear enamel.

Ted Ziegler
- Lincoln Park

Cleaning headstone Bronze Markers

November 20, 2016

Q. I downloaded 5 pages of cleaning bronze headstones. Claims I should use distilled water, 200 grain sand paper, brown shoe polish, wire brush, clean towels etc., etc. I tried sanding the markers but I was worn out only after a few minutes without much difference. Our Memorial Park suggested just spraying WD-40 and then they charged me $40.00 including cutting the grass around the marker. Yikes!!! I just ordered a drill which is battery operated to use with the sand paper and then just ordered a battery smaller drill for little jobs to sand the damages off. I have gone nuts trying to figure this out. Bought a book about cleaning things with Vinegar. I have well over $200.00 invested so far and still unhappy with my efforts. I have been quoted up to $500.00 to lift the marker and take it to a factory to refinish. My mom's marker is only 4 months old and turning already. I have faith the vinegar, flour and water will work. I am leaving CLR hard spot removed on the pictures on the headstones to remove the hard water spots. As a side note. At the house I'm going to change over to a soft water system to rid my home of hard water spots. I am that frustrated with this situation we face in 2016. If I win with satisfaction I will start a business for others who don't have the time but have the desire and money.

Nana E.
Family Member caring for bronze markers - Los Angeles, California

December 2, 2016

A. Grave markers, eh? That's a new one.

There are a few other threads floating around here for brass and bronze items, most of them beds. A lot of those folks have been pretty happy using a citric acid cleaner.

adv. (E.g. my product CitriSurf 77)

Given the specifics of grave markers I can't say for sure if that will be the best thing, but I suppose it's worth a try. Also might have to be careful with it depending on what the markers are mounted on, certain materials like concrete and limestone can be significantly attacked by exposure to acid.

ray kremer
Ray Kremer
Stellar Solutions, Inc.
supporting advertiser
McHenry, Illinois
stellar solutions banner

December 4, 2016

A. We walk our dog in a nearby cemetery every morning. I've been interested to see the effect of aging on the bronze markers. Some appear as new for as much as 15-20 years, others weather to various brown and/or green colors within a year.

I haven't see any of them which look like they have been refinished, they have all been let to age naturally.

The ones which show age only after many years have some sort of clear coating from the factory, but I doubt it's anything you could do on site.

What I'm saying is this - I think your particular marker either originally had no clear overcoat, or it was a poor one which soon failed.

You *might* get it cleaned up using a battery-powered electric drill with some mounted buffing pads and buffing compound, but it will be a lot of work, and will soon weather again.

I understand your concern, but I don't think it's a problem you can solve.

jeffrey holmes
Jeffrey Holmes, CEF
      South Carolina

February 9, 2017

A. Bronze memorial markers have a clear coat lacquer that has been applied to keep the marker looking new for a long time. If you put WD-40 on a bronze marker you will remove this lacquer and the aging process will begin.

Maureen Walton
The Cemetery Exchange LLC - Lawrenceville, Georgia USA

March 14, 2017

A. adv.
Hi all. Aside from being the inventor of Scratch-B-Gone for Stainless steel and long time poster on, my company is a field service company specializing in bronze plaque refinishing. We manufacture a RIY kit called Restore Marker Care System from my early years restoring some and bronze in cemeteries. This is a DIY kit but we can also do it for you. Call to discuss at 760-804-5707

Barry Feinman
Restore It Yourself -

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