Often asked: Can You Gelcoat Over Epoxy Resin?

Typically, gelcoat isn’t recommended over epoxy because they’re chemically incompatible and the gelcoat won’t adhere properly.

Can you put clear coat over epoxy?

Clear epoxy coatings are usually applied as an additional protection layer on top of an epoxy or polyurethane floor. They can serve several purposes such as scratch resistance, protecting flakes and other aggregates, as well as general protection from dirt pick up.

What finish can I put over epoxy?

Both oil-based and water-based polyurethane can be applied over epoxy, although oil-based polyurethane may leave an amber hue (while water-based will be more clear). To ensure proper application, be sure that the epoxy has completely sealed/hardened, and sand first to allow for a mechanical bond.

How do you prep epoxy for gelcoat?

Before applying gelcoat over epoxy: surface preparation steps

  1. Allow the epoxy to cure to the point where sanding produces a fine powder.
  2. Wash away amine blush with water and an abrasive pad such as a 3M #7447 Hand Pad.
  3. Dry the surface with paper towels, or rinse well and allow it to air dry.

Will polyester gelcoat stick to epoxy resin?

Myth 1: Epoxy doesn’t stick to polyester The only conditions are that the epoxy needs to be thoroughly cured, well abraded and scrupulously clean. Polyester gelcoat is not recommended for finishing repairs below the waterline. This is because once epoxy is cured, it’s dimensionally stable and will not shrink.

Can I put Polycrylic over epoxy?

Polyurethane over epoxy is just fine.

Can I put shellac over epoxy?

Dewaxed shellac is a pretty universal sealer, anything adheres to it, including epoxy.

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Does epoxy resin need a top coat?

Whatever the project you’re working on, you’ll need several coats of epoxy resin and hardener. Most projects need between two and four. However many coats you’re planning on, you need to recoat at the right time and in the right way and ensure your surface is properly prepared.

Can I spray lacquer over epoxy resin?

Lacquer can stick to epoxy.

Is gelcoat the same as epoxy?

Gelcoat or ‘Gel Coat’ is a material used to provide a high-quality finish on the visible surface of a fibre-reinforced composite. The most common gelcoats are thermosetting polymers based on epoxy or unsaturated polyester resin chemistry. Gelcoats are modified resins which are applied to moulds in the liquid state.

Do they make epoxy gelcoat?

Industrial Epoxy Finishing Coating EcoPoxy GelCoat is an epoxy coating with superior chemical, abrasion, and thermal resistance. It is easy to use, wets out well over a variety of surfaces, and will coat vertical surfaces without sagging. It is designed as a finish coat and works well with laminating systems.

Can you put fiberglass over epoxy?

Yes, as long as you glass over it with epoxy resin too.

Does epoxy resin stick to epoxy resin?

No, because no cured Epoxy surface will allow a chemical bond for another layer of Epoxy. You can sand it down though and then another layer of epoxy should bond to it.

Will fiberglass resin stick to epoxy?

Polyester resin laminates achieve their highest strength when the bonds between layers of fiberglass are chemical or primary bonds as opposed to mechanical or secondary bonds. Because of the difference in curing chemistry, it is not possible to achieve a chemical bond between epoxy and polyester gelcoat.