How to Fix a Bad Drywall Mud Job

How to Fix a Bad Drywall Mud Job (7 Easy Steps)

The interior of your home is equally important as the exterior so you may consider a drywall job for a simple look, but how do you fix a bad drywall mud job when it goes wrong?

The drywall job involves attaching wall boards and preparing your home for painting. To fix a bad drywall job, you must patch the damaged area using a joint compound. 

This process goes deeper than this, but we have covered the step-by-step process involved in this article. We have also explained some signs of this problem and some mistakes that lead to this problem.

Sign of a Bad Drywall Mud Job

The sign of a bad drywall job is as shown below.

  1. The visibility of joint or seams on the drywall: if you can spot joint or seams after the drywall installation, it has not been properly installed because it requires a different panel for the wall.
  2. Uneven corners or visibility of little ridges: This signifies a bad drywall job and reduces the home’s quality. But fortunately, this situation can be easily solved. The poor application of tape causes this, and to ensure even corners, there should be no crooked lines, creasing, bubbles, or indentation.
  3. Nails and screw holes: the visibility of nail and screw holes is a sign of a bad drywall job; it indicates that the quality of the mudding is low.
  4. Sagging ceiling: Although this rarely happens in most cases, it results from poor mudding installation. This is mostly caused by leftover of the joint compound, reckless or unskilled application of second compound coat, quandary over the joint tape, and sometimes air bubbles.
  5. Crooked panels: drywall often ends up crooked due to the heaviness of the sheet. This mostly occurs when an individual tries to fix and screw it by himself, but frequently the drywall is crooked because the wall itself is crooked.
  6. Rough surfaces: the visibility of rough surfaces on the wall shows that the drywall has gone bad or, to a certain extent, is bad.
  7. Leftover messes: drywall involves using a large amount of sand, producing a lot of fine dust. The fine dust, if not cleaned up, can interfere with the paint job on the wall and the binding of the joint of the window and door.

Common Mistakes In Drywall Job

1. Failing To Hang The Joint 

A hanging joint is a situation whereby the joint in-between the drywall panel will fall over the framing member or when the seam of the drywall goes into a space.

2. The Drywall Joint Becomes too Tight

The drywall is bound to become worse if compressed together because the adjoining sheet clusters risk braking, which is prone to failure.

3. Excess Application Of Sanding

Excess sand or aggressive sanding means the individual seam must be retaped. If you want perfect installation of drywall that is professionally done in the sanding and custom painting which includes texture removal, exterior and interior painting, and ceiling removal

How to Fix a Bad Drywall Mud Job

Materials Needed

To achieve a proper drywall job, substandard materials should not be used; materials of good quality should be used to avoid casualties. The material that should be used is as follows.

  1. A 14-inches arc welded stainless steel mud pan.
  2. A can of spray texture
  3. A medium or fine sanding sponge
  4. A 5 inches carbon steel drywall flex joint knife(optional)
  5. A 3 ibs pouch of 5-minute easy sand joint compounds
  6. A 10-inch blue steel drywall taping knife

Step 1: Use The Knife Taping To Clean The Mud Pan

The 5-inch joint is used to scrape the nail pop on the wall of the house since it is versatile and can perform several functions, although it has multiple other uses. Then use the knife taping to clean the mud pan. Due to its ability to hammer small and little bumps into drywall can also be used to sharpen other objects; using this material is optional.

Step 2: Sand Your Drywall Knives And Mud Pan

After acquiring the materials and tools, sanding your drywall knives is the main thing to do. Sanding the drywall knives help in the creation of abrasions of the metal to be used.

This step enhances the grip of the bad drywall on the mud, preventing the presence of ripples on the wall. This step is repeated to create more abrasions for the mud pan.

Step 3: Protect the floor and yourself from splatter

After step2, you must protect the floor environment and yourself from the mess of the mud splatter. To protect the environment or area, canvas drop cloth can be considered in order not to stain the environment. And for the protection of yourself, wearing goggles and a protective or an old cloth, you’re good with this.

Step 4: Mix The Sand Product

The next that will be most convenient is to mix the sand product inside the mud pan. Likewise, water needs to be added to your mud pan. 

After this, the sand product should be poured gently with ease and slowly, in the intervening time, should be continuously stirred with the 5-inch joint knife.

This should be done until a lump-free mixture is achieved. If the product is of great quality, it should harden shortly and be mixed quickly.

Step 5: popping drywall nail and screw/air bubbles

If a nail is driven out with a lot of force, this causes the edges of the nail to pop out. Sometimes it covers a large area of space. Nail pop, apart from the fact that it does seem pleasant, also causes injuries, whereby individuals unaware of it lean on it and can accidentally get injured. The nails and screw holes should be absent to make the drywall job perfect.

How to Get Rid of Drywall Nail and Screw

  1. The need to drive another nail or screw near the pop, this help In evening out the district of the pop
  2. Next, using a 5-inch joint knife to carve out the pop and uneven bumps, it should be noted that no spec of drywall, paper, and other vices are present.
  3. Make use of a lightweight to even out the part of the walls.
  4. The use of sandpaper should be considered in the removal of excess when over-patching an area with the drywall component.
  5. The wall should be painted the same color and, if possible, shade the one in the surrounding.

How To Get Rid of Air Bubbles

  1. The potion’s upper and lower layers should be cut out. This help in the disconnection of the drywall tape and the bubble.
  2. The tape within the tape should be pried by digging the 5-inch joint knife into the drywall; the bubbles should be lifted gently with the 5-inch joint knife. The tape should be pulled in the upward direction in other to remove them from the wall.
  3. To even out the wall’s surface, drywall compound should be added with the appropriate measurement. an overlap should be left where the bubble tape was; this is very necessary.
  4. A new drywall tape should be installed directly on the compound to avoid bubbles this time. The tape should be pressed evenly together.
  5. To apply the new thin layer of the drywall, a towel should be used on the new dried tape; this action is repeated until the desired result is achieved.

Step 6: The Use of a 5-inch Knife to Smooth And Scrape The Area

After applying the drywall component and mud, the action that should be taken is to scrape and smoothen it. To perfect this action, it is advised that the 5-inch knife should be used to scrape the drywall mud from top to bottom.

 After smoothing the drywall, the individual should wait for about 9 to 10 minutes before the individual can start to scrape it. The waiting of 9 to 10 minutes to allow the scraping of the wall easier

Step 7: Sanding and Spraying

Once the individual has scraped it and should be applied at each edge of the wall, and when it dries, spraying/painting the texture of the drywall follows.


Drywall can help beautify a home but can also damage the house if not perfectly installed. We have explained how you can identify this problem as well as how you can fix this problem. We also covered the smallest details like how to get rid of nails and air bubbles.

You must hang the joint properly to prevent the boards from falling over. You should also avoid making the joint too tight and using too much sand as they lead to a bad drywall job.

Helpful Links:

We trust this article helped you learn how to fix a bad drywall mud job. You may also want to check out 10 Things You Can Do Right Now For a Gorgeous Yard This Summer.

Thanks for taking the time to read our article, and we hope you find it helpful. Would you mind leaving a comment below if you have any suggestions?

Kindly reach out to people by sharing this post on social media.

If you liked this article, then please follow us on FacebookInstagram, and Pinterest.

Scroll to Top