Why does sheetrock tape bubble

You can minimize compound inconsistency by selecting the correct mud for your drywall. Furthermore, it is specifically designed to minimize shrinkage during drywall repair, thus significantly reducing bubble formation. Using your blade, identify and cut out drywall sections with bubbles. Start by making a vertical incision from the top to the bottom of the bubble. This will allow the underlying tape to fold, making it easier to open.

This will create a bubble-free base for you to reinsert joint tape without sanding down the area. Using your drywall joint compound, apply the mud over the exposed drywall area. With your knife, spread the mix over the missing tape area.

Ideally, it would be best if you covered a larger portion than what the tape previously occupied. He says the pre-mixed joint compound is defective. What's the secret? Just how does one get perfect blister free taped drywall joints? We are running out of time. Karla D. Taping Drywall - Basic Steps in Seconds. After all, he is giving it the old college try.

The odds that the pre-mixed joint compound in the bucket is defective are very low. If the product was fresh when purchased and has not been frozen, it should be fine. Let it dry. If it is difficult to remove with a scraping tool, the product is fine. The most common reason for drywall tape blisters is a lack of joint compound between the tape and the drywall surface.

All too often I see rookie weekend warriors make the mistake of removing too much joint compound from underneath the tape. Some people press the taping knife so hard they snap it in two! Also, if people press the taping knife too hard, the tape snaps into to. Air bubbles start to form on the second coat when the tape absorbs the moisture during the second application of the joint compound.

Another thing is, drywall blisters can also mean that the finisher is defective. It is also possible that the pre-mixed joint compound in that certain bucket is defective. If that product was fresh and not frozen when it was purchased, then there should not have been any problems. To test if the product is a good batch, try spreading a one-eighth-inch patch on some dust-free drywall and let it dry. If it is difficult to remove this with a scraping tool, then you know that there are no problems with the product.

Preventing bubbles in drywall mud starts with understanding that these pre-mixed joint compounds are advanced water-based adhesives that are mixed with finely ground solids which give them body and mass. So, preventing bubbles begins with proper mixing. Remember that once the compound is mixed, it should resemble smooth warm cake icing.

It should flow out of the bowl or pan easily. The trick to achieving pro results takes a lot of attention to detail and hand-eye coordination. Apply the strip of tape on the drywall and use your drywall knife to press the tape firmly to the surface while pressing out any possible air bubbles. Directly apply the joint compound to cover the strip of tape while making sure to create as even of a surface with the remaining drywall to its side.

Repeat the process once more just in case. Skip to content -