Rust stains on painted wood surfaces, whether indoors or outdoors, can completely ruin their appearance.
The good thing is there is a list of various household rust removal products that you can try to fix the damage made to your oak tables, chairs, and other furniture items due to rust.
But before discussing them, let’s understand what actually causes rust stains on wood.
Why There is Rust on My Wood Surfaces?
We know most metal furniture is susceptible to rust because of the process called oxidation.
However, there are instances when rusting is sometimes also seen on wood surfaces.
This usually happens when wood and metal objects in combination (like a wooden door with metal hinges) come in contact with external conditions such as rain and oxygen.
Rust stains can also appear on wood surfaces when you cut the wood using the cutter machines made of metal or if you have used iron nails for woodworking or during construction.
These iron rust stains caused are generally brown or gray markings that can be difficult to remove.
Will rust deteriorate the wood surface?
The answer is yes. Rust on iron can deteriorate nearby wood surfaces and cause significant damage over time.
If you have a wooden surface that is regularly exposed to moisture or water, it is essential to regularly check for signs of rust and take steps to remove it as soon as possible.
Left unchecked, rust will eventually eat through the wood, causing serious structural damage.
5 Ways to Clean Rust from Old Wood Furniture?
What follows are different ways by which you can easily remove rust stains from painted wood surfaces without damaging the underlying paint or stain.
1- Use sandpaper
Using sandpaper is one of the simplest ways to remove rust stains off the wood surface.
Make sure you use very fine to medium-grade sandpaper so that you do not damage the already painted surface while sending.
Also, remember that it’s most likely that you will need to touch the painted surface after sanding.
So be prepared for that extra work even when you are very careful.
2- Scrub with detergent
Using your household detergent, you can remove rust stains that are not too stubborn from the surface.
Mix some water and detergent in a container. Then with steel wool scrub off the area until all the rust is gone. Then allow the area to dry completely.
3- Use baking soda and water
Baking soda and water is one simple way that can help to break down rust and its stains very fast.
All you need is to apply the baking soda to the rusty area carefully. Then Scrub off the rust using a wire brush dipped in water.
4- Rub with dish soap and a potato
If you think your painted wood surface is very delicate, you can use this household remedy to get rid of rust stains.
Cut a piece of potato in half, then dip it into a bowl containing dish soap.
After a couple of seconds, take a piece of potato out and rub it on the painted surface until the rust is removed.
5- Apply eco-friendly rust remover
Eco-friendly rust removers (made up of natural ingredients) are now available at your nearby local hardware store that can be used if all the above methods fail to work.
All you will need is to follow the instructions on the package, and it will work to remove the rust stains in a snap.
When buying these products, ensure that you choose the one that is pH neutral or comes with a high pH.
Since acidic products can damage the painted surface, you should aim at using the rust remover that is mild and less acidic.
Can WD-40 Remove Rust from Wood?
WD-40 is a multi-use product that comes with excellent lubricating properties.
If you are worried about damaging the paint while removing the rust from the surface, WD-40 is a product that can take good care of it.
WD-40 is basically designed to loosen the bonds between rust and the surface it has adhered to.
So, it will work safely to remove rust but not paint if applied correctly in small quantities.
To remove the surface rust, you simply need to:
- Spray the solvent on the rusted surface
- Leave it for around ten to twelve minutes to allow it to work on the surface rust
- Then using a light abrasive (like fine-grit sandpaper), scrub the surface gently.
WD-40 not only works to remove rust from wood and metal but also to protect against corrosion.
Plus, it also protects the area from getting future rust stain damage.
How to Prevent Rust on Painted Wood Surface?
After you have removed the rust stains successfully from the painted wood surface, it pays off to know how you can prevent the rust from developing again in these rust-prone areas.
So, here are a few tips you can follow to ensure that you keep your surfaces protected.
a) Countersink the nails
Iron nails are among the most common reasons why you see rust stains on already painted surfaces like your hardwood floor, deck, or patio.
If you find any rusted nails, either replace them with new nails or countersink them below the surface (around 3mm deep) using a nail punch.
Then, fill the holes using a waterproof wood filler or a putty to make the surface smooth.
This will prevent exposure to moisture which will keep the nails from rusting.
b) Apply rust-resistant primer paint
When you are refinishing the kitchen cabinets, doors, or windows with metal hinges, make sure you apply rust-resistant primer and paint on these surfaces as well.
For better adhesion of the primer, consider scuffing the surface lightly using sandpaper before the application.
Then apply the primer and paint to the surface, adding a protective layer to the metal fixtures and preventing rust from appearing.
c) Remove any metal in the rust-prone area
To prevent rust stains from appearing again, it’s also essential that you identify and remove the exact cause of rust.
This includes the metal railing, containers, old barrels, light fixture, iron hardware, locks, etc., that is closely located near the wood surface that is not rust-resistant.
Even the screws, bolts, and fasteners made of aluminum and brass may not be completely rust-resistant and can cause rust stains to appear sooner or later.
Check if you can completely remove them or can replace them with objects like stainless steel, which can help a lot.
How do you get rust out of nails and screws?
To get rust out of nails and screws, you can use a wire brush to scrub and remove the rust flakes.
Alternatively, you can soak the iron nails and screws in a solution of vinegar and water.
You can also try using a rust remover solvent. If the rust is too bad, you may need to replace the nails or screws.
How to remove rust from painted metal furniture?
If you have painted metal furniture that has developed rust spots, you can remove the rust with a wire brush or sandpaper.
If the rust is really bad, repaint the furniture after removing the rust spots. Make sure to use a rust-resistant primer before painting.
To prevent rust from developing on painted metal furniture, make sure to regularly clean and wax the surface.
How do you remove rust stains from painted concrete pavers?
If the rust stains have developed over time on painted concrete pavers or driveways, you can use a number of home remedies to clean them off.
For example, you can make a paste of baking soda and water and apply it to the rust stains.
You can also try using white vinegar or lemon juice to remove the rust stains.
If these home remedies do not work and you find the stains too stubborn to remove, you can always hire a professional to clean the rust stains for you.
Rust stains on painted wood or metal surfaces can easily become an eyesore when they appear.
Although you cannot completely prevent these stains from appearing, you can treat the areas well, which will not only help to get rid of them but also will prevent them from developing soon.
Also, if possible, use the timber that’s more durable than others and may be better suited for outdoor use in areas where rust is a concern.
Hopefully, the above article, with lots of tips and ideas, will help you achieve the desired outcome.
Hi, I am Mark Garner a professional carpenter, woodworker, and DIY painter. I live in the small city of Peoria, Arizona as a semi-retired woodworker. I have started this blog with a simple motive to help you with my wood experience in this sector. If you like to know more about what I love doing and how it all got started, you can check more about me here.