can you epoxy XPS foam?

XPS foam is a type of rigid insulation board that’s used in construction. It’s less common than other types of insulation materials and it tends to be more expensive than other options, but there are a few benefits to using it.

XPS foam boards are made up of two layers: one layer called the face paper (the white side) and one layer called the back paper (the black side).

The XPS foam is sandwiched between these two layers and then covered by an adhesive coating on both sides so that it will stick together when it comes out of the machine at the factory.

The only way to get rid of that overhanging paper would be to peel off all four edges from each board piece individually, which would take forever and probably result in damaging your material/seams.

If possible, I’d recommend simply cutting around the seam with an electric knife or sawing through with metal shears if you have access to those tools for cutting metal roofing materials like copper or aluminum shingles (it might work for fiberglass too).

That way you can reuse those scraps once they’re separated from their original “frame” after being cut off…

Can you epoxy over foam?

Yes, you can epoxy over foam. It’s not as simple as a normal wood project, though. You’ll need to clean the surface and make sure it’s completely dry before applying the epoxy.

Otherwise, you could end up with an uneven finish or have bubbles that won’t pop from under your epoxy coating.

You also need to make sure that your foam is sealed somehow first—this will keep moisture from getting in between the layers of foam or between the glue and foam so that it isn’t absorbed into one side before drying completely on both sides (this is what causes bubbles).

If you’re planning on painting over your final product once done, then sealing will be even more important because any imperfections are going to be visible in the finished product if they aren’t sealed properly beforehand!

Can you put resin on foam board?

In this article, we will examine the question of whether or not you can use epoxy resin to bond foam board. First, let’s briefly review what epoxy resin is.

Epoxy is a low-cost, two-part system consisting of an epoxide and a curing agent. The curing agent activates when combined with the epoxide, causing them to polymerize into a hard substance that can be used for many different applications such as bonding, coating, and filling.

Epoxy resins are best suited for bonding sheet materials together. They have excellent adhesion properties and cure quickly at room temperature (70°F).

However, they may not adhere well to porous surfaces like wood or cardboard because these materials cannot effectively hold onto the liquid components needed for proper curing (called wetting).

How do you bond XPS foam?

Epoxy resin is a liquid that turns into a hard plastic when it dries. When you use epoxy resin, you can bond XPS foam to any material and make it stronger than before.

You will need to use a high-quality epoxy resin for the best result. Epoxies that are not designed for bonding XPS foam do not work well and may actually cause damage to your project.

Is XPS foam the same as Styrofoam?

Can you use XPS foam to make a boat? No.

XPS foam is a type of rigid polystyrene that’s used in construction to create soundproofing walls and roofs. It’s made from 95 percent recycled materials, making it a good eco-friendly choice for green building projects.

XPS foam boards are strong enough to be used as insulation under roof shingles, so they’re often used in commercial and industrial building projects as well as residential ones.

The question has been asked many times: Can you use XPS foam board as an insulating material for boats? The answer depends on what kind of boat you want to build and how much money you want to spend on your project—XPS boards can be very expensive!

Though it’s not recommended since they’re so lightweight, some builders have tried using styrofoam sheets instead of EPS for ballast tanks or other voids in small watercraft such as kayaks or dinghies (small open boats).

Does epoxy resin dissolve foam?

Epoxy resin doesn’t dissolve foam. The only thing that will dissolve a piece of foam is water, but epoxy will never mix with water, so this is not a concern.

Epoxy resin also doesn’t dissolve styrofoam. You may have heard the term “styrene,” which is another name for polystyrene, meaning that it won’t be affected by either chemical or heat either (exactly what you want when melting something).

Since epoxy doesn’t react in any way with these materials and they can’t be dissolved by anything else either, using them together is completely safe!

How do you resin foam?

A respirator, face shield, and gloves should be worn when working with resin. A tack cloth should be used to remove dust from the surface of your foam before you begin to apply the epoxy.

A roller is recommended for large surfaces, but a brush can also be used. A sprayer will give more even coverage if you have some trouble with pesky air bubbles.

A squeegee is best for removing excess resin and giving nice clean lines between pieces of foam (like on chair backs).

How do you harden foam board?

  • Use a high-quality epoxy. Epoxies are notoriously brittle and can crack if not applied correctly, which is even more of a problem when working with foam. A high-quality epoxy will work better than a cheap one.
  • Mix your epoxy properly. The best way to do this is by using a cup of water for every two cups of resin you add to the mixture (in other words, two parts resin for everyone part hardener). If you don’t have enough hardener available, mix more so that it forms a thick paste before applying it to your foam board.
  • Apply the epoxy carefully and evenly throughout all areas of your piece before letting it dry completely; otherwise there may be bubbles in the final layer that won’t come out in subsequent coats or sanding down later on!

What epoxy is safe for styrofoam?

Because of its chemical makeup, epoxy resin is not safe for styrofoam. Epoxy resin is not safe for XPS foam. Epoxy resin is not safe for EPS foam. Epoxy resin is not safe for polystyrene foam.

Epoxy resins are made up of two parts: an epoxide and a hardener. The epoxide reacts with the hardener to create a strong bond between materials and fill any gaps between them (called “gluing”).

When you spread it over your surface it dries quickly—this can be useful if you need to glue two pieces of wood together quickly but don’t want them coming apart later on due to moisture in the air causing them to swell again.

However, when used on styrofoam or other plastics, there’s a risk that these chemicals will react negatively with each other and cause harmful fumes which could hurt you if inhaled over time!

It’s best to avoid using epoxies near these types of materials unless absolutely necessary because they can damage furniture pieces made out of sintered polystyrene without proper ventilation while they cure (and even then—they may still cause problems down the line).


With all of this information, you can make a decision on whether or not it’s worth it to epoxy XPS foam. If you do decide that it is worth it, then consider using an epoxy resin that has a fast cure time and low odor (like the one we mentioned above).

You will want to keep exposure to the fumes as minimal as possible and use a respirator if possible for safety reasons.

Photo of author

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.

Leave a Comment