1 How to Apply Drywall Mud to Concrete 2 How Thick Does Drywall Mud Need to be on Concrete? 3 What is the Best Joint Compound for Concrete? 4 Conclusion You might believe that applying a layer of drywall mud to concrete walls can smooth them out.
Does drywall compound adhere to concrete?
This relies on a variety of elements, such as humidity levels, the kind of drywall mud you use, and the preliminary work you carry out. You must first prepare and paint the surface before applying multiple thin applications of joint compound to maximize the likelihood that the drywall will adhere to the concrete.
Even with the required safety measures, the drywall compound could eventually break and come off.
Before you begin this house renovation, make sure to read the following information.
APPLICATION OF DRYWALL MUD TO CONCRETE Concrete is best suited for use with drywall mud in dry, low-humidity spaces.
You’ll probably be unhappy with the results if you try to joint compound skim coat damp basement foundation walls. The use of sheetrock in this situation is a far superior choice. Plastering or utilizing stucco on the walls are further alternatives.
But if you considered the advantages and disadvantages and found that your walls are suitable for DIY drywall skim coating, you may begin with some preliminary work.
Here is what to do:
Remove any high places in the concrete using a scraper, masonry chisel, and hammer. Wire-brush the wall to clean it With a damp sponge, clean the wall. Apply a very thin coat of drywall compound starting at the top and pushing it into the cracks and crevices while the wall is still damp. Working it in, move your trowel back and forth and in various directions.
As you go, scrape away the excess to leave a flat surface. After giving the first layer 24 hours to dry, give the wall another very thin coat.
After the second coat has dried, use a scraper to remove all of the joint compound’s high points.
Scrape in between layers two more times.
Once the wall has four thin layers, you may decide if you need to apply more or if the wall is prepared for sanding and painting.
If your wall appears to be ready, softly sand it with either a fine-grit sanding sponge or 120 grit sandpaper until it feels even and smooth. (If you plan to use a sanding sponge, wet it first.)
The sanding dust can then be removed from the wall by wiping it down.
After that, prime the wall before painting it with a high-quality primer.
HOW DEEP SHOULD DRYWALL MUD BE ON CONCRETE?
You must spread drywall compound over concrete or cinder block in multiple thin layers. Each layer should be between two and three millimeters thick.
To completely coat your concrete walls, it may take 4–8 of these coats.
WHAT JOINT COMPOUND FOR CONCRETE IS BEST? Durabond is among the best joint compounds to use on concrete.
The Home Depot and other home improvement retailers carry Durabond. It is highly resistant to humidity and doesn’t shatter as quickly as some other joint compositions.
Look for a joint compound that has a strong bond and is ideal for humid situations.
CONCLUSION Does drywall compound adhere to concrete? Yes, but there isn’t any assurance. Before installing the drywall on the concrete walls, you need also make sure it is still in good condition.
There’s a significant probability that the drywall mud on your walls may eventually crack and fall off if you’re trying to skim coat over concrete block walls in a damp basement or you live in a humid environment.
The quality of your concrete walls may astound you, though, if your basement is dry and you take your time adding numerous thin coatings of premium joint compound.