When you are working on a drywall joint, you are going to want to be as meticulous as possible with the installation.
Unfortunately, the finishing might not always work out as planned. This includes forgetting to tape the drywall joint.
If you are saying, “I forgot to tape drywall joint!” then it is time to figure out a proper solution as soon as you can.
If you forgot to tape a drywall joint, start by sanding it down by 1/8″, apply the tape, and re-mud the spot allowing it to spread.
This will ensure the finishing is smooth and it looks the way you want it to. If not, you are going to be exposing the drywall joint to cracking down the road.
This is why it’s best to take action right now and get on top of things as soon as possible. It will ensure you don’t have to repair the drywall joints later on.
Here is a breakdown of what you are going to do if you forgot to tape a drywall joint.
Best Drywall Tape (EDITOR’S CHOICE)
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Tips If You Forgot To Tape Drywall Joint
1. Sand Down By 1/8″
When it comes to drywall taping mistakes, it’s common to forget to do it entirely.
There is nothing to worry about when you are in a situation such as this. You will simply want to prep the surface and make sure it’s in good condition before moving forward.
The best place to start is by taking a sanding tool.
You are going to sand down the drywall joint by 1/8″. Make sure you keep this measurement in mind as that is all you are going to have to do for the taping to be done.
Don’t overdo the sanding as that will make it harder to get the finishing you are after later.
Be precise and make sure you are sanding it cleanly.
This will allow you to begin taping the drywall joint again when the gap is created.

2. Apply The Drywall Tape
Now it is time to apply the drywall tape.
With the 1/8″ gap after the sanding has taken place, you are going to have enough space to move forward with the taping.
This has to be done by pushing the tape into place and providing complete coverage to the drywall joint.
You will have to make sure the drywall tape is resilient and the right type for your project. This is the only way to get the results that you are after.
Be patient during this step and make sure you are applying it into that gap you have sanded down.
3. Re-Mud The Gap
Now, you are going to want to cover the drywall tape.
To do this, you will have to start with drywall mud to work on the drywall joint. Apply the drywall mud on top of the tape and make sure it offers comprehensive coverage.
You will want to also make sure to use the same drywall mud as you have used for other parts of the room.
This will ensure the finishing is perfect and in tune with what you want.
You might have to overshoot the mudding along the sides to get a seamless finish. Don’t just cover that specific spot and forget everything else.

4. Smooth Out The Drywall Mud For Perfect Finish
The last detail to focus on would be how smooth the drywall mud is.
This is a big part of the process and something people forget when they are doing it for the first time.
Just because the 1/8″ gap has been created does not mean you are going to have to only target that specific spot. You will need to spread the drywall mud to the sides to make sure it is a comprehensive finish that looks aesthetically pleasing.
This might not seem like a big deal at first, but it does matter for how the drywall turns out.
Final Thoughts
“I forgot to tape the drywall joint!”
If you forgot to tape the drywall joint, the best step is to begin sanding the joint down by 1/8″. Once you do this, apply the drywall tape, re-mud the spot, and make sure to spread it along the sides. This will create the perfect finish.
There is no reason to panic when you forget to complete this step.
It can be managed with the use of a sanding tool. Just work on the drywall joint and make sure there is enough space for the tape to be applied.
This will get the job done and make sure the finishing is in line with what you had envisioned.
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