Dish Soap in Drywall Mud: All You Need To Know

By - Hs Saini

Updated -

Published -

Many complaints have been made about how tiny bubbles appear on drywall mud. And several suggestions about different procedures to curb it.

Adding a little dish soap to your drywall mud can help make it smooth like a baby’s skin. But how much soap to drywall mud would you need?

Depending on the particular brand of drywall mud, it is a good idea to mix the drywall mud. Sometimes, you would need to add a little water. This would help thin the compound out and make it more flexible and more straightforward to work with.

However, in many cases, if the compound has been allowed to freeze over time, you might end up with a mixture that would be bubbly and inconsistent.

Why Do You Add Dish Soap to Drywall Mud?

Dish soap in drywall mud

Adding Dish Soap to drywall mud would help make the mud smoother, producing a better finish.

It also prevents bubbles in your drywall mud, as long as you follow the proper mixing procedures to the required consistency.

No one would like to see bubbles in their freshly painted walls because they’re unpleasant to the eye and annoying as well.

The bubbles would avert the walls from being outrightly smooth, leaving a lumpy surface for the first coat of paint.

Fortunately, a wide range of solutions helps prevent these bubbles from being on your walls.

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One of which is by applying Dish Soap to your drywall mud. Also, it would be best to be cautious about how much dish soap you mix in your paint.

For a bucket of drywall mud, three tablespoons of dish soap and a little water are enough to do the trick. Adding water, albeit a little, goes a long way in extending the lifespan of your mixture.

It would be best to be careful how you stir the mixture after adding the water alongside the dish soap because any slight error resulting in an unmixed drop would float to the surface and ruin the painting.

The wetter the mixture, the easier it would be to spread out and leave a quality finish, but you must apply it thinly.

Why Does Drywall Mud Have Bubbles?

Bubbles on your drywall mud would only happen for one reason; when you apply the mud on a previously painted wall, using a very thick layer. Also, not correctly scraping the surface may cause bubbles on them.

Mixing the drywall mud incorrectly can create bubbles because overmixing the mud leads to adding air pockets.

Another reason you can find bubbles in your drywall mud is that you didn’t make the necessary preparations for the wall you were supposed to paint. It is essential that you properly prepare the surface to which it is supposed to be applied to.

You need to ensure that no drywall dust is left on the surface. It can get trapped underneath the mud and lead to unwanted bubbles, if there are any.

Sometimes, the problem behind the bubbles is due to the drywall mud you’re using. Endeavor to use only fresh drywall mud of good quality; a bad one can cause multiple bubbles on your wall.

Also, ensure to avoid using any drywall mud that has been around for a long time. The older the mud, the more complications you will have if you use it.

What Does Putting Dish Soap in Drywall Mud Do?

Adding dish soap to drywall mud

Dish soap can behave as an emulsifier when mixed with drywall mud. Also, it would help break down the surface tension of the water and the mud. This would cut down on the bubbles that might form on your wall.

It is required that you use the tiniest amount of dish soap possible. To see how the application would work, take a bowl and ensure it is clean and dry.

Next, fill it to the brim with water and sprinkle pepper on the water’s surface; when this is done, drop the dish soap in the middle of the bowl. Just one drop would be sufficient enough.

You would then notice that all the pepper will rush to the sides of the bowl as the surface tension breaks. Repeat this procedure and use just the right amount of soap to stick to one end of a toothpick.

It would be sufficient to tell you that very little dish soap is needed.

A lot of drywallers make use of dish soap and chlorine bleach, in most cases, to slow down the formation of mold in a bucket of drywall mud that would be stockpiled for quite some time.

You may also see it added to the bucket after filling the pan for the last time on a project.

Should I Add Dish Soap to My Drywall Mud?

A thinner coat is less likely to form bubbles because it is smooth and easier to remove when applying it.

Adding Dish Soap to your drywall mud can also help thin it, but you have to ensure you don’t add too much because the mixture is too thin and useless.

If you’re using a rapid-setting mud, you should mix it in small batches at a time.

If you increase the size, it will dry quickly and become frozen to use. You also need to be conscious about not overmixing the drywall mud.

If you do not, you might confine air inside the drywall mud, which usually leads to the formation of bubbles when applied.

If you use a drill to mix your drywall mud, ensure that it isn’t set to a very high-speed setting because this would add a lot of air.

Also, do not attempt the plunging method when mixing the mud; this step would also suck air into it.

A highly recommended way of mixing the drywall mud is by doing it yourself. That way, you would have more control over its formation.

You can also alter the consistency of your drywall mud to reduce the chances of it getting bubbles.


Dish Soap in drywall mud is a straightforward and convenient way to avoid bubbles in your drywall mud and on your walls resulting from trapped air.

Using the right amount of soap and mixing it would prevent it from happening, leaving your wall surfaces smooth as you would like.

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