Fixing Drywall Imperfections After Painting

Drywall imperfections like seams bleeding through, settling cracks, and dings are often noticeable.  But do not worry.   They can all be addressed after painting.

Depending on the severity of the imperfection, you may need to try these tricks, and I am sure one of them will work for you.

1 – Clean the Drywall Nicely

If the primer, joint compound, or the paint itself doesn't seem to be sticking, one of the reasons could be dust and dirt on the drywall. 

This dusty buildup decreases adhesive properties.

Mix a solution of detergent and warm water to clean off the wall using a durable detergent formula like trisodium phosphate. Next, use a clean sponge to wipe away any dust, dirt, or grease on the surface.

2 – Chip off the Mud and Puncture the Bubbles

Use a paint scraper and drywall knives to remove the bulging areas of your wall near the seams, revealing a smooth surface beneath.

Doing this will also provide increased coverage. Next, use the paint scraper tip to puncture any bubbles in the tape, then cut or pull off the loose drywall paper with the drywall knife.

Now that the wall is clean use a dry paintbrush to remove any dust or mud.

3 – Coat the Seams With Mud or Drywall Joint Compound

Use a 4-inch drywall knife/blade to spread an even coat of mud or joint compound on all the uneven seams.

Moisten the paper drywall tape with water and lay it over the wet mud.  Scrape the tape flat, then apply a second layer of mud or joint compound over the now flattened tape.

Allow the first coat to dry overnight, then apply a second coat with a 6” knife.  Let that dry, and then use an 8” knife to recoat the seams for the third time.

4 – Sand the Area, Apply Texture and Paint to Fix Imperfections

Allow the final coat to dry, then sand the repaired areas using 120-grit sandpaper.

Be sure to go over each spot thoroughly with a work light so that they're flat, even, and smooth. You're now ready to add the matching texture to your wall. 

Use a spray can or knife to apply the same kind of texture. After it dries, coat it with primer, wait for that layer to dry, and finally, using a roller, apply the paint color.