How To Fix A Bad Drywall Job That Has Been Painted

How to fix a bad drywall surface

A badly-done plaster surface can be damaged by children, pets or door knobs that, when hit hard, they end up breaking the surface. In some situation, the damage could cause a gaping hole in a hard-to-conceal area of your home.

These damages could also be minor or small damages. Given their size, they are usually between 5 to 10 cm.

Do you have marks, bumps or holes in a drywall that has been painted? The solution to the problem is easier than you might think. And no, you don’t have to be a professional painter or drywall repairer before you can take up this little task.

How To Fix A Bad Drywall Job That Has Been Painted

Below, we will show you a step-by-step tutorial on how to fix a bad drywall job that has been painted. Cheer up and follow this guide.

4 steps for repairing drywall

4 steps for repairing drywall

What you’ll need

  • Damp cloth
  • Sharp knife
  • Latex gloves
  • Sealant
  • Wall paint
  • A repair kit which includes a putty knife, sandpaper
  1. Repair

The best way to repair door handle holes and many others up to 13 centimeters (five inches) in diameter is to use a repair kit available at a local hardware store or DIY store. A typical kit contains a filler and a glue fitting made of fine and perforated metal or mesh fiberglass.

Some kits even provide sandpaper and a putty knife. The kits are available in different sizes. Choose the one you need.

Brush or cut off the loose paper and remove the crumbling plaster. Wipe the surface with a damp cloth to remove dust or dirt. Let the wall dry.

Size the repair if necessary. Mesh metal fittings can be cut with scissors. Remove the repair bracket, center it, and glue it to the wall. Press the edges to stick them well.

Apply the coating to the repair with a drywall knife, flattening well beyond the edges. Once the plaster is dry, sand and apply a second coat.

Finally, apply a third coat for a smooth, sufficiently large repair with slightly sloping, less visible edges.

  1. Let it settle down

You don’t want to repair a crack and, two months later, it is back, do you? The problem is usually due to subsidence, which is a common problem in new homes, especially at the corner of windows and doors. It is advisable to plug the small cracks that reappear with mastic paint which is more flexible than the filler.

Another tip: Put on a latex glove and wipe the caulk gently with your finger. For larger cracks, use soft sealant and apply with a putty knife.

The final step in any wall repair is to sand the repaired area and then smooth it before painting. But sanding, even if it is only a small repair, creates large amounts of fine white dust that will be dragged throughout the house. To avoid getting dirty, wipe the component with a damp sponge. It will allow you to smooth the surface as well as sandpaper it while leaving you less cleaning to do.

  1. Repair the blisters

If a blister forms on the joint, the person who laid the wall probably did not put enough joint compound on the joint. To solve the problem, simply cut the blistered area with a sharp knife, then use plaster to repair the damage and then smoothen and retouch the painting.

  1. Corner problems

Drywall corners projecting outward may be prone to get damaged when hit probably by a laundry basket, child’s toy or furniture. Fortunately, the repair is easy.

The outer corners are protected by a metal piece, called a corner wand. It is molded on the corner, nailed to the plasterboard and then covered with a joint compound. If a corner wand is bent, give it its shape by gently tapping with a hammer and file the sharp edges to make them smooth.

As the existing corner strip provides support for any repairs made, you have the option, in this case, to plug with a quick-setting sealant or putty compound. Fill in the damaged area and smooth with a putty knife.

Once the repair has dried, sand or smooth with a sponge, before applying a coat of primer and then paint.

Another option for fixing damaged drywalls

Tools you’ll need

  • Composite tray
  • Spatula for drywall
  • Roller

Materials you’ll need

  • Compound for pre-mixed joints
  • Self-adhesive patch
  • Sandpaper
  • Paint
  • Dry cloth
  • Plastic to cover the floor

Step by step instructions

  • Clean the area of the damaged surface with a dry cloth eliminating all kinds of dirt or moisture.
  • Place the plastic to cover the dusty floor.
  • Once the environment is clean, place the wall sticker on the damaged surface and center it.
  • Press all the edges until you make sure it is well attached to the damaged surface.
  • Place a bit of joint compound with the spatula and the compound tray, covering the patch until it is completely covered.
  • Make sure the compound is smooth over the patch.
  • When the compound dries, sand the surface until it is level.
  • Re-add a new layer of compound.
  • Once the second layer is dry, sand again until it is level.
  • Once the last layer has been sanded, paint the surface of the same color as the wall.


Fixing a drywall job that has been painted isn’t actually a task exclusively reserved for professionals.

If you have a bad drywall surface in your home, we hope you give this a try. You should let us know in the comment section. if you were able to successfully fix your drywall with the listed procedures.

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