1 How to Apply Drywall Mud to a Painted Wall 2 How Thick Does Drywall Mud Need to be on a Painted Wall? Will Drywall Mud Stick to Eggshell Paint? Will Joint Compound Stick to Semi-Gloss Paint? Will Joint Compound Stick to Primer? Will Drywall Mud Stick to Oil-Based Paint? Will Joint Compound Stick to Satin Paint? Conclusion Will drywall mud adhere to painted surfaces if you need to repair a painted wall?

The response is, occasionally. Drywall mud will adhere to flat paint and primer with ease.
The drywall mud won’t stick to semi-gloss paints or those with a higher shine since they are too slippery.
You will need to make the appropriate preparations in this situation before administering the joint compound.

DRYWALL MUD APPLICATION FOR PAINTED WALLS It is simple to apply drywall compound to painted walls. Here are some tips to make sure the joint compound adheres to the wall properly:

Remove any extra drywall or paint that has chipped. Use TSP to clean the wall. Prior to using drywall mud, paint the area with primer. When the primer is fully dry, apply the drywall mud. You can add another layer of primer, then a coat of paint, after you’ve finished sanding the drywall mud.

HOW THICK OF A DRYWALL MUD DOES A PAINTED WALL NEED TO BE? The type of repair will determine the thickness of the drywall compound. The patched area should eventually seamlessly blend with your painted walls.

The new drywall should be covered in multiple, incredibly thin layers of joint compound for best results.
Once the drywall mud is properly covered, you can sand it to complete it.

Start by smoothing off any rough ridges or uneven surfaces using 120 grit sandpaper. After that, sand the drywall mud using medium-grit paper to make it mix in with the existing wall.

Use 220 grit sandpaper to finish. The surface will be smooth and prepared for primer and paint after this.

WILL EGGSHELL PAINT AND DRYWALL MUD STICK TOGETHER? Eggshell paint will take egg compound. Consider cleaning your walls with TSP before applying the joint compound to boost the sticking strength.

Trisodium phosphate (TSP) is a powerful cleanser that will etch the wall, remove any grease, and remove any dust, making it perfect for joint compound adhesion.

SEMI-GLOSS PAINT OR JOINT COMPOUND, WHICH WILL STICK? Semi-gloss paint will not allow joint compound to adhere. Sadly, this paint’s shine makes the wall too slippery for the joint compound to stick to.

If you have semi-gloss paint, you must apply primer to the areas where joint compound will be applied. You can repaint the wall after it has been restored.

WILL THE JOINT COMPOUND REMAIN WITH THE PRIMER? To primer, mud for drywall will adhere.

In order to provide a surface for the joint compound to adhere to if your walls are satin or semi-gloss, you can apply a coat of primer on top of them.

Even over a primer coat, you can skim.
WILL OIL-BASED PAINT ATTACH TO DRYWALL MUD? Since oil-based paint is inherently very glossy, joint compound cannot adhere to its surface.

Therefore, drywall compound will not adhere to oil-based paint, and even if it does at first, there is a possibility that it will eventually flake off.

THE JOINT COMPOUND WILL STICK TO SATIN PAINT, OR NOT? Some joint compound brands will adhere to satin paint. Since all joint compounds will adhere to primer, it is safer to apply the first coat of primer over the area you need to mud because satin paint does have a tiny sheen.

CONCLUSION On flat or eggshell painted surfaces, you can easily apply drywall mud if you need to do so on a painted wall.
If your walls are satin, gloss, or semi-gloss painted, just coat the area you need to drywall with primer.
The joint compound will adhere to the matte surface created by the primer.