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Can You Use Redgard on Drywall? (All You Need to Know)

The redgard is a blessing.It is a high-quality liquid that creates monolithic waterproofing membranes on the object. If you want to make something waterproof, you can use the Redgard. It will turn into a red color once dried and become a durable layer.

But can you apply redgard on drywall? Let’s find out below!

Can you use redgard on drywall?

You can use redgard on drywall and turn it into a waterproof surface. Since it’s a liquid, it will work on any surface. If you follow the right paths and apply the redgard accordingly, it will be safe and durable protection on the drywall. You can use it in both the kitchen & shower drywall.

You can even use the redgard on the bathtub and turn it into a waterproof surface. Its working capacity, and the quality will amaze you surely. You can use it through a paint brush or roller on your desired objects. 

Applying the redgard with a roller might be difficult because the liquid is very thick. It will become a burden to roll over the drywall. Therefore, using a paintbrush might be a good relief if you use it for the first coat.

Although the redgard liquid works on every surface, you cannot use it everywhere because it creates a red color impact over that wall. To apply the redgard wisely, you should be careful. Once you use it on the drywall, you cannot remove it soon.

In a shower: 

You can use the redgard in a shower wall and turn it into a waterproof surface. It’s an essential task to make your drywall waterproof since it will need to bear water every day. 

If you have options to use the redgard liquid everywhere in your shower, you should do it with the proper methods.

Some sort of experience might help you do so. If you are a DIY worker, you will know better that you need to use the redgard very carefully. The thick layer will be long-lasting, and you can’t remove it once it dries. 

Painted drywall: 

You can use the redgard on painted drywall to make the surface waterproof. But you have to apply the primer and prepare it pretty well since it will have a long-lasting effect on the painted drywall. 

If you use the latex paint over the drywall, you can also use the redgard primer.

You must make the primer using one part redgard liquid mixed with three parts fresh water. That means you can mix one cup of liquid with a 3 cup of cool water, make the redgard primer, and use it on the painted surface.

Can you waterproof drywall with redgard?

You can waterproof drywall with redgard. Putting Redgard on your drywall will make it waterproof, so you will not have to worry about your drywall getting damaged by water. It will be better to use board-backed cement to get the most out of it. 

It will give you total protection. If you compare it to a primer, the product has less accuracy and is more difficult to use, but the results are still better than the primer; it is durable. 

You can use it on both the inside and outside layers because it makes a waterproof velum barrier and reduces the risk of the damage spreading to the other parts of the drywall.

Will redgard bond to joint compound or drywall mud?

Joint compound or you may call it drywall, redgard will bond to it. You may require joint compound or drywall mud for a variety of reasons. You will always need this paste to make the joints smoother and fix damages occurring in drywall. 

Joint compound or drywall mud, at times, can act as water-resistant. But the remarkable thing is that it is not fully waterproof. Drywall is prone to water damage, but waterproofing can make it less likely. 

If you use Redgard with joint compound or drywall mud, it will give you complete waterproofing and prevent your drywall from getting damaged by water. Also, you can easily combine using redgard with joint compound or drywall in any area.

“3” reasons why you can use redgard on drywall

You can use redgard on drywall for various reasons. I found three reasons that truly help the liquid work on the drywall. 

Adhesive Liquid: 

Drywall compounds or joint compounds are the best fit for the drywall. They are adhesive and can stick to the drywall for a long time. The same reason is also applicable to the redgard liquid; it’s a sticky liquid that will adhere to the drywall.

You can use it as the best sealer for your drywall to seal everything with its adhesive nature. Therefore, you can use the redgard liquid on drywall without any issues.


The redgard liquid can turn the drywall into a waterproof surface. It will resist water and make the drywall last for a long time. It’s another notable reason you can use the redgard on the drywall. 

You can use the redgard with a paintbrush or a roller. Both will help you flawlessly apply the redgard on the drywall and make it a waterproof surface.

Easy to Prepare: 

Preparation of the paint or any liquid to use over the drywall is a real challenge. We always look for a solution that is easy to apply. And here comes the redgard liquid, which you can prepare within a while.

All you need is one-part liquid and three parts water. Mix them properly and get the redgard primer within a few minutes. It’s another reason why people use the redgard on drywall.

When can you use redgard on drywall?

You can use redgard on drywall when waterproofing and moisture are required. If there is a significant risk of water intervention on drywall, you can use redgard to protect the surface from damage. 

It is highly recommended that you use it in areas where there is a high possibility of becoming wet. 

Therefore, the bathroom and, in some instances, the kitchen are the best places for you to use redgard because they are both wet areas. It keeps your favorite drywall from becoming submerged in a pool of water. 

It is recommended that you use drywall in these areas to hold some moisture. 

That is where the character of Redgard will come in. Redgard is a highly effective adhesive component. It helps to keep cracks from opening up. 

If you require greater waterproofing protection while also ensuring that the wall retains its moisture, you must use redgard on your drywall.

How to waterproof drywall with redgard?

You can waterproof drywall with redgard by following three steps. Please don’t skip any of these steps; otherwise, it will be a mess. 

Prepare Drywall: 

Preparing the drywall is the first condition before you start using the redgard on it. Preparation includes cleaning the drywall & dry it properly. You can also include an extra coat of the primer over the drywall in the preparation.

So, the main task is cleaning, ensuring no dust and debris on the drywall. These things will damage the redgard quality and won’t let the liquid stick to the drywall.

Make the Redgard Primer/Sealer: 

You need to prepare or make the redgard primer or sealer on your own. You only need fresh cool water in this step. First, take a container and measure the required redgard that you need to apply on the drywall. 

Remember, you need to use the water three times the redgard liquid. Once you pour them into the container, mix them up and make the redgard primer within a while. 

Apply with Paint brush/Roller: 

You can apply the redgard liquid with a paintbrush or a roller. If you want to use the redgard for the first coat, you must use a paintbrush. It will help you to apply the liquid all over the drywall evenly.

Once you finish the first coat, you need to wait until it dries properly. Then, you can apply the second coat over the drywall. It will become a waterproof surface once the redgard is dried and turns red.

Dry & Use tiles/Thinset: 

When you dry the redgard properly, you can cover the drywall with tiles or whatever you want. You don’t need to use any other protective layer over the redgard paint. It will be enough to make the drywall waterproof and protect it from damage.

Final Thoughts

Since it’s an adhesive liquid and sticks to any surface, you can use the redgard on drywall. It will turn the drywall into a waterproof surface and resist the water and moisture. It will also make the drywall durable and protective. You need to follow some tips while applying it over the drywall.