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Taping or Topping Joint Compound For Drywall Repairs.

Which Joint Compound to use for drywall?

I have come across several queries from our clients asking us about the difference between taping and topping joint compounds. While both are used in the process of drywall repair and finishing, each has its own unique characteristics and uses. In this blog post, I will be discussing the difference between taping and topping joint compounds, and when to use each one.

Taping Joint Compound

Firstly, let's talk about taping compound. Taping compound is primarily used for the taping process. It has more glue in it that sticks to the drywall better, ensuring that the drywall tape sticks firmly to the drywall surface. This is important because without a proper bond between the tape and the drywall surface, the tape will eventually lift or crack, leading to drywall cracks and damage. This is why it's important to use taping compound while taping drywall joints.

Topping Joint Compound

On the other hand, topping compound is used for the second coat of finishing over the taped seams. It is also used for filling in small dents or imperfections in the drywall surface. Unlike taping compound, topping compound doesn't have as much glue and has a better chance of the drywall tape lifting if used for taping. This is because the topping compound is meant to be applied in thinner layers than taping compound. Applying thicker layers of topping compound can lead to cracks and damage, as it doesn't have the same strength as taping compound.

Which One, It Depends!

When deciding which joint compound to use, it's important to consider the job requirements. If you are taping drywall joints, you should use taping compound. If you are applying a second coat of finishing or filling in small imperfections, you should use topping compound. Using the wrong compound can result in damage and cracks to the drywall surface, leading to more extensive drywall repairs.

Other Factors For Joint Compound

Another factor to consider when using joint compounds is the drying time. Taping compound takes longer to dry than topping compound. This is because of the increased glue content, which makes it stickier and harder to work with. Taping compound can take up to 24 hours to dry, whereas topping compound can dry in as little as 2-4 hours. This is important to consider when planning your drywall repair project, as it can affect the amount of time needed to complete the job.

Final Thoughts

Taping and topping joint compounds serve different purposes and should be used accordingly. Taping compound is used for taping drywall joints, has more glue content, and takes longer to dry. Topping compound is used for finishing and small imperfections, has less glue content, and dries faster. Using the wrong compound can lead to drywall damage, so it's important to use the correct one for the job at hand. Remember if you need any help for any projects reach out to us.

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