What Causes Drywall Mud to Crack? Reasons Your Drywall Is Cracking 

Drywall putty, which is also known as mud or joint compound, is a building material used during drywall installation or repair to hold plasterboard together. There are many issues that could effect the mud on your drywall. When you notice a mud crack, it can definitely be concerning. 

Here are a few reasons why this occurs: 

Incorrect Installation 

When mudding a wall, it’s important not to apply the mud too thickly. This can cause excessive shrinkage as the material dries, leading to cracks. To avoid this, be sure to follow the directions for drywall mud thickness as specified by the manufacturer and ensure that you are applying a layer of thin drywall mud. 

Furthermore, poor mixing of the joint compound can also result in cracks. Mud is usually purchased in the form of powdered drywall mud and requires a particular texture to ensure adhesion. Not mixing the substance well enough can cause cracks to form in the finished product. 

To avoid this, you can try going for premixed drywall mud, but be aware that this type of mud spoils quickly and may develop mold. 

Insufficient Drying Time 

Moreover, not allowing layers of mud on drywall to dry adequately can also lead to the joint compound cracking. There are a number of different types of drywall mud, so to avoid cracked mud, choose a fast-drying option, such as hot mud for drywall. This can help you save time while still ensuring that your mud is completely dry.

Depending on the nature and extent of the damage, this can typically be repaired by applying drywall crack filler. 

Insufficient Taping 

Drywall tape is also used to reinforce joints, so when insufficient tape is used, it can result in the gypsum mud cracking. 

Paint Being Applied Too Thickly

If you notice that the area around the mud cracking has paint in thick layers, then the reason might be too much paint. Make sure you are using high-quality paint to avoid having to apply too many layers. 

What You Can Do About Mud Cracks 

Here are a few tips on how to prevent or address cracks in drywall mud compound: 

• Make sure you are using the correct type of sheetrock crack filler when mudding sheetrock. 
• When repairing cracks, be sure to use a suitable drywall repair mud. Because this process can be challenging, work with a reputable contractor. 
• Be mindful of how thick you apply drywall mud and follow the manufacturer’s instructions carefully. 
• Consider using crack-resistant drywall mud. 

Need Help Dealing with Mud Cracking? 

It's important not to postpone a drywall mud repair. That’s because this substance is used to hold plasterboard together, so mud cracking could indicate a structural or installation issue that needs to be addressed. 

Leaving your cracked sheetrock unaddressed can result in greater damage, which costs you more. We can help you take care of your cracked joint compound, ensuring that your drywall is looking and functioning at its best. 

Contact Skyline Drywall Aurora today to learn more about our services or request a free estimate.