can you epoxy over joint compound?

Epoxy coatings are great for walls, but there’s a lot of confusion about what you can and can’t do with them. Epoxy is strong stuff, so it will stick to almost anything—but there are some things that epoxy won’t stick to at all.

Some types of materials won’t even have time to dry before they’re covered up with epoxy. Let’s take a look at what works and what doesn’t work when applying this useful coating.

Can you epoxy over joint filler?

Yes, you can use epoxy to fill the cracks. In fact, this is one of the most common uses for epoxy in the home improvement market.

Epoxy is a great way to repair small cracks in drywall and other types of plaster or stucco walls because it dries hard enough that joint filler will not pull out when you try to smooth it with sandpaper or a sander.

To use this method:

  • Clean the area thoroughly with an appropriate cleaning agent (check with your local hardware store) and let it dry completely before adding any other substances or working on your wall.
  • Apply an even layer of epoxy over all areas where there are cracks or breaks. The amount used will depend on how much coverage you want—the thicker the layer, generally speaking, the better protection against future damage from water penetration or other forces that could cause more problems down the road (which means more repairs needed later). It should be applied so that it completely covers every part of what needs repairing but leaves no excess material anywhere else; this keeps costs down since less material is needed overall compared with applying multiple layers over top of another layer already applied earlier (see below).

Can you epoxy over drywall?

You can apply epoxy over drywall, but you’ll need to sand the area first. You can also use a primer before applying your epoxy if you want to get the best results.

To ensure that the bond between your drywall and epoxy is strong enough, it’s important to make sure that your surface is clean and smooth before applying any sort of plaster or compound mixture. This will give you a cleaner application process as well as allow for better adhesion when drying time occurs.

Can you epoxy over adhesive?

Epoxy is not a glue. Epoxy is a hardening resin that comes in two parts: resin and hardener. The resin cures when it gets wet, but the hardener does not.

When you mix both together, your epoxy will begin to cure and set up in about 20 minutes or so (depending on the type of epoxy).

But what happens when you apply epoxy over adhesives like contact cement? You get a very thick layer of cured adhesive where none was before!

And while some people may think they can just sand off this excess layer with sandpaper, that’s not really an option because it would take forever—and also be extremely difficult since contact cement is so sticky.

The best solution is to apply a second coat of adhesive after your initial coat has dried completely–and then let both coats cure completely before applying any further coats.

This will prevent any unwanted bumps from forming under your final coating work.

How do I epoxy my garage with expansion joints?

Epoxy over expansion joints. If you want to cover an entire garage floor or basement floor, you’ll need to start with the right material.

A good epoxy will be thick and sticky enough to adhere well, but not so thick that it’s difficult to spread out evenly on your surface of choice. It should also cure quickly—you don’t want your epoxy drying before you can finish putting it down!

Afterward, sand down any imperfections and apply a second coat of epoxy over them (and if there are still more patches than necessary).

In addition: If you plan on covering an entire garage or basement with this product (and therefore covering any expansion joints), make sure that there aren’t any gaps between where the floor meets other walls or supports—these could cause problems later on when trying to finish off those areas with paint or another type of coating.

How do you fill concrete cracks before epoxy?

If you have concrete cracks, you should fill them with a suitable filler before applying epoxy. A filler is a substance that fills the void in a surface and provides strength and support to that area. You can use any of the following products:

  • backer rod – used for filling gaps between walls and flooring
  • crack filler – used for repairing small to medium-sized cracks in concrete or masonry
  • concrete filler – used for filling large holes in concrete walls or floors
  • joint sealer – used for sealing joints (like between tiles) so water doesn’t go through them (you don’t need this if you’re just applying it over tile)

Can I fill expansion joints?

You can fill expansion joints with epoxy. Epoxies are tough and durable, so they’re perfect for filling the gaps between bricks or stones. To apply epoxy to an expansion joint, follow these steps:

Can you epoxy basement walls?

You might be thinking “yes.” After all, the concrete walls in your basement are very similar to the concrete that makes up the foundation of a house.

But there’s one key difference between the two: a basement wall is made of concrete, while a foundation is built on top of soil; this gives it a kind of barrier between itself and whatever moisture is present underneath it.

The same can’t be said for your basement walls—they’re right next to all sorts of water (and probably also sewage).

So what do you do if you want to paint or coat your basement’s walls? Well first off, you need to make sure that there isn’t any moisture trapped behind them by leaving gaps between panels so air can circulate freely through them.

If this isn’t possible because there aren’t enough gaps or maybe because they’re too high above ground level then we recommend using an insulating material like drywall instead (or plywood). Then apply primers and paints just like normal!

Can you epoxy shower walls?

YES! You can epoxy shower walls. There are a few things you’ll need to do before you can get started:

  • Prep the walls by cleaning them. Using a sponge, clean the surface of all dust and debris.
  • Prime the wall with Zinsser Bullseye 1-2-3 Primer/Sealer.
  • Paint your wall with two coats of high-quality latex paint in your desired color. This will help make sure that nothing will stick to it if you have any chips or scratches later down the road! It also ensures that when it’s time for maintenance, there won’t be much buildup as well as making sure that any moisture doesn’t cause damage either physically or chemically (which could lead to mold growth).


Now that you know what epoxy is, and how it works, I hope that you’re ready to get started on your next project. The best part about using epoxy is that it can be used for so many different things! You can even use it in places where paint might not work well—like on concrete or metal surfaces.

If you have any questions about how this product works or would like some help deciding which type of epoxy will work best for your project.

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Martin Flood

Martin Flood has been working in the construction industry for over 20 years as a general contractor with expertise in remodeling projects that are large or small. He has furthered his career by specializing in epoxy resin flooring, providing excellent service to both commercial and residential clients. Martin’s experience enables him to offer professional advice on how to choose the right type of project based on your needs and budget.

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