
You CAN paint directly over it, but it’s not going to hide any flaws, fill scratches, etc. It’s NOT very good protection for bare metal, it absorbs moisture, like most primers. Not good to put under, or over body filler.
Full Answer
Do you have to sand primer before painting over filler?
You only have to sand about a 1 or 2 inch diameter around the specific spots where the filler is showing up through the paint. After you remove the paint, add a coat of primer to seal the filler. For a smoother finish, use a small brush for those tight areas. Make sure the primer has dried before painting over the area.
What happens if you water down filler before painting?
If you just slap on neat paint it'll dry instantly and sit on the surface and won't bond properly. If you water it down, the paint will partially absorb into the filler and partially sit on the surface meaning the bond is better, it's properly sealed and it's ready for your neat coat of paint or three.
How do you paint over plaster filler?
When you paint over filler you should apply a watered down coat of paint first or a plaster primer. If you just slap on neat paint it'll dry instantly and sit on the surface and won't bond properly. If you water it down, the paint will partially absorb into the filler and partially sit on the surface meaning...
Do you have to paint over wall filler?
In this case, after you have put two or three coats on the filler paint a whole wall - you don't need to paint the whole room because the edges/corners will hide any slight change in shade. When you paint over filler you should apply a watered down coat of paint first or a plaster primer.

How long after filler primer can I paint?
Dries to the touch in 20 minutes. When dry, the surface can be immediately recoated, top coated or wet sanded. For best results, allow Filler Primer to dry for 1 hour before dry sanding.
Can you paint over filler?
If the filled area was very large I might wack a thinned coat of paint over it just to make sure that it all sealed off properly and to check it looked OK but I wouldn't normally over small areas. As a rule I put 2 coats over filler otherwise it can flash.
Is there a difference between primer and filler primer?
6:1313:20Primers Explained How to Choose a Primer - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo there are some differences between these two types of primers. The etch primers. Basically willMoreSo there are some differences between these two types of primers. The etch primers. Basically will dry a lot quicker than the epoxy primer.
What is filler primer used for?
About Filler Primer Spray Rust-Oleum® Filler Primer is a hi-build formula that fills in minor imperfections in the surface and improves top coat adhesion and appearance. For use on metal, wood and fiberglass surfaces.
Should I prime filler before painting?
Putting it right. Make sure that all filled areas are rubbed down smooth and level. You will need to prime the filler before painting to prevent subsequent coats being absorbed more rapidly than on other areas.
Do you have to prime over filler?
A. We recommend priming before and after application of the filler. Priming will protect and aid with adhesion of the filler to the surface. Priming afterwards also ensures excellent adhesion of your paint top coat.
Can filler primer be sanded?
Have also been using Duplicolor Sandable FILLER primer and it is excellent on body tubes. You can sand it with 320 after a day or two and ready to paint.
What automotive primer should I use over old paint?
Epoxy Primers These primers create a harder, more chemically resistant coating. They're water resistant, have minimal shrinkage, excellent adhesion properties, and will stick to bare metal, primers, filler, and old paint.
Is Rust Oleum filler primer lacquer?
New Member. plano-doug said: That's because it's basically flat enamel paint; it's not a lacquer based primer (aka automotive primer).
Can you brush on filler primer?
About Filler Primer Brush On Recommended for use on metal, wood and fiberglass surfaces.
How many coats of primer do I need?
You will want to use 2-3 coats of primer to ensure there is a good bond between the new paint and the wall, and also to cover up any previous colors, especially if they are red, orange, or a strange outdated color. In short, you will typically need 2 coats of primer for most painting projects.
Is there a primer that fills in cracks?
Mad Dog Crack Fix(MDPCF) is a water-based, non-toxic, stabilizing interior primer. Mad Dog Crack Fix(MDPCF) penetrates, stabilizes and prepares peeling paint, cracking stucco and plaster, rusty and galvanized metal, wood, and concrete surfaces.
Can polyfilla be painted over?
When painting over pollyfilla I always seal it first, but wetting the surface of the polyfilla and then going over with a watered down emulsion. Otherwise the polyfilla sucks the moisture out of the paint and you get blistering, which is what I imagine is causing the problem in your case.
How do you paint over filled holes?
After you've filled all the nail holes, you can paint over them immediately. You need to prime these little spots, or you can use your paint as a primer by first painting over the spots, letting them dry and then rolling out the wall like you normally would.
Can I paint directly on wood filler?
Remember to properly prepare the surface before using wood filler and before painting to conceal the damaged areas. This includes sanding, cleaning, and waiting until the wood filler is completely dry before you paint.
Can you Colour wall filler?
Tim Inman: Yes, of course you can color wood with paint in the filler. As always, test the mix for suitability for your purposes!
How to repair a wood filler?
Use light pressure to sand over the wood filler sections with fine-grit sandpaper to blend the repair into the surrounding material. Afterwards, swipe a finger over the patched area. Both the wood filler area and the surrounding wood should be virtually even with one another.
What is wood filler?
At the end of the day, wood fillers are simply a synthetic material that tries to mimic wood. And we use it to repair cracks and holes, as well as hide imperfections in furniture, doors, floors and other wood surfaces.
How long does it take for wood filler to dry?
Afterwards, allow the wood filler to dry completely. Now, depending on the brand, this can take as little as 15 minutes. But, typically a wait of anywhere between 2 hours to 6 hours is pretty normal (especially if filling in deeper holes).
How to fill cracks in wood?
Use a putty application tool to fill in crevices or places where wood may still be cracked. Make sure you over stuff those gaps too, as when wood filler dries it starts to contract and shrink. And once done, use your putty tool to smooth down and even out the surface.
Is wood filler a mimic of wood?
But, wood filler is a pretty poor mimic of wood. For example, it absorbs paint at a different rate than wood. Which essentially means that when you paint over that wood filler, the paint will stick in some areas and not others. This is why we always prepare the surface of lumber first by using a primer (sometimes referred to as an undercoat).
Can I paint over filler?
Can I Paint Straight Onto Filler? You could, but only if you want to make a mess. Painting directly over filler will leave you with patchy areas across the surface. A thin undercoat of primer will help those coats of paint adhere better.
Can wood filler be a pain?
Now, wood filler marks can be a real pain in the you-know-what. So the only way to avoid having wood filler issues in the future is with a little bit of proper prep work.
