Can you primer over filler?
Mia Horton
Updated on January 04, 2026
Do not proceed to Primer Filler stage until filled area is even. Adding body filler AFTER primer filler should be avoided to prevent possible adhesion, staining and shrinkage concerns.
Can you use primer on filler?
When you've done everything you can to fill rust pits and strip old paint from sheet metal, one of the best ways to cover any remaining imperfections is to use a filler primer, as known as heavy-bodied primer or high-build primer.Can you paint on top of body filler?
Fillers and putties will normally work OK over properly sanded (80-180 grit) cured OEM paint. However, with so many different types of aftermarket paint available (lacquer, enamel, urethane, water-based). We recommend that all paint be removed where filler is to be applied.”Can you use etch primer over filler?
This really depends on the Make of Etch you're using.... some specify that they cannot be used over filler whilst most specify the opposite. It would be best to read the manufacturers labels etc before commiting anything to a panel. What is certain is that filler must not be applied ontop of Etch.What primer do I use over body filler?
If spraying two coats, the product must dry overnight before applying over body filler. Wet sanding epoxy primer is usually the best way to prep it because epoxy has a tendency to clog paper when sanded dry. Polyester primer is a very thick two-part product and is used when there's a good deal of bodywork.Painting over filler - PRIMING filler - MIST coat ( Avoid FLAKING Paint )
Do you use body filler before primer?
46 Epoxy primer must dry for one hour and all metal work must be completed before starting the body filler process. Applying body filler over epoxy primer provides maximum corrosion protection for the metal. Apply filler within seven days of applying epoxy primer to maximize adhesion.Is high build primer the same as filler primer?
Some restorers believe filler primer is little more than liquid body filler. In most cases, the filler primer or high-build primer is also a urethane product. You can generally add as many coats of filler primer as you want, sanding between each coat (as some restorers do) or after every three or four coats.What does filler primer do?
Filler primer is a thicker primer that fills in scratches and uneven surfaces before painting. It's perfect for places like the cut edges of MDF and plywood. Once filled and sanded it will be just as smooth as the rest of the surface.How long should filler dry before painting?
Allow the putty to dry 15 minutes at 77 degrees F (25 degrees C). In cooler climates, putty may take 20-30 minutes to dry.How soon can you paint body filler?
Get Ready To Sand…If you are doing general bodywork, leveling wavy panels, fixing small dings, etc, then wait until the filler is fully cured, about 20-30 minutes.
Should I prime Bondo?
NO, never. bondo goes over bare steel only. Never over any kind of paint, primer, etc.Do you have to Prime filler before painting?
Putting it rightMake 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.