Epoxy Floor Thickness: How Thick Should It Be?

Epoxy floor thickness varies based on its use and epoxy type. Thicker resin floors are stronger and better at absorbing shocks, protecting the concrete underneath.

It’s crucial to use high-quality materials for epoxy flooring to ensure it lasts longer, stays safe, and can handle regular use.

As specialists in resin flooring installation and determining the correct thickness, we know people have questions about their options. This article serves as a quick guide to understanding epoxy flooring thickness reasons.

The Condition of the Concrete Substrate

People looking for epoxy for their floors aim to protect them long-term. Finding the right protection can be complicated. It’s important to choose the epoxy thickness based on the floor’s condition.


When selecting floor thickness, consider how much traffic it will receive. High foot traffic and heavy machinery require thicker floors to protect the concrete. For less traffic, choose a thinner epoxy to save money.

Chemical Exposure

Chemicals can damage all types of flooring, including those with epoxy coatings, especially if they are frequently exposed. Epoxy floors with thin coatings can wear down from regular use of cleaning products.

Companies using chemicals regularly benefit from epoxy floors with thicker coatings.

Condition of the concrete

The thickness of epoxy flooring depends on the current damage to the concrete floor. Floors with major cracks or significant damage need a thick coating to prevent worsening. A thinner coating is enough if modern concrete floors have low traffic and no chemical exposure.

Thin Epoxy Floor Coatings

Thin Epoxy Floor Coatings

Thin epoxy coatings brighten industrial areas and simplify floor cleaning. They are installed fast, reducing downtime for new flooring installation.

Pros of Thin Epoxy Floor Coatings

  • Installed quickly to reduce downtime.
  • Ideal for keeping surfaces dust-free.
  • Options for non-slip surfaces are available.

Cons of Thin Epoxy Floor Coatings

  • Does not fix deep holes and blemishes.
  • Scratches can reveal the concrete below.

Thick Epoxy Floor Coatings

Areas with heavy erosion or damage need thick epoxy coatings. Thorough floor preparation is crucial for these thick epoxy layers to bond deeply with the concrete and stick properly.

Pros of Thick Epoxy Floor Coatings

  • Very long-lasting.
  • Ideal for areas with lots of foot traffic.
  • Able to hold heavy equipment.
  • Scratches usually don’t reach the concrete.

Cons of Thick Epoxy Floor Coatings

  • Prepare the floor thoroughly.
  • Apply additional epoxy layers.
  • Expect an extended installation time.

Super Thick Epoxy Coating

If you own a machine shop, commercial warehouse or an industrial space like a brewery, you might need a thicker epoxy floor for heavy machinery, chemical spills, and vehicle traffic.

The best and most cost-effective option is often a slurry epoxy, which combines three components: A, B, and Aggregate (usually quartz). This mix is trowelled onto the floor, forming a highly resistant base coat. A topcoat is applied afterwards to protect the floor and add aesthetic appeal.

What the Epoxy Flooring Thickness Usually Is

Resin is a coating system, not actual flooring. It involves pouring epoxy resins over concrete, which then hardens to create a smooth floor. The thickness of resin floors can vary depending on the intended use.

Light Use

If your space gets light traffic, a floor thickness under 1mm is enough. This works well for small warehouses, packing areas, and storage rooms. It’s okay for light vehicles like forklifts and pump trucks.

Thin Coat Systems

Thin Coat Systems have a thickness of 400-500 microns, including a primer coat if required. These floors suit facilities with light to medium traffic and are applied using a roller and squeegee.

Intermediate Use

If an area gets a lot of foot traffic, choosing a thicker epoxy flooring of 2 to 4 mm for medium use is best. This thickness can handle the pressure from forklifts, making it perfect for warehouses and industrial areas with vehicle traffic. Very heavy compounds should not be used on this type of surface.

Self Levelling epoxy systems

Self Levelling epoxy systems are thicker epoxy floors, usually 2-3 mm thick. They create a smooth finish and are used in many industries including food storage and manufacturing, pharmaceuticals, and industrial warehouses.

Heavy Use

Heavy-use flooring typically measures 4 to 6 mm in thickness and often consists of multiple layers, making it ideal for high-traffic areas. It’s especially suited for garages, car park decking systems and public spaces that experience constant use, as it can withstand heavy weight easily.

The resin flooring is also easy to clean and has anti-slip properties, making it practical for use in airports.

Anti-slip floor systems

Anti-slip floor systems are available in thicknesses from 1mm to 4mm. There are two methods for applying anti-slip floors. One method involves broadcasting quartz on the wet coating. The other method mixes quartz with epoxy primer and applies it with a trowel.

Choosing the Right Epoxy Floor Thickness & Epoxy Flooring System

Choosing the Right Epoxy Floor Thickness & Epoxy Flooring System

To choose an epoxy flooring for your industrial or manufacturing business, start by evaluating your floors and understanding your business needs. Epoxy floors are durable and improve your property’s look.

Deciding between a thin or thick coating can be challenging. Our experts at DC Flooring offer free consultations to help you. Contact us today to begin!


What happens if you pour epoxy resin too thick?

Pouring a thicker layer of epoxy than recommended can cause problems, including trapped air bubbles, smoky emissions from the thick epoxy layer, and extended curing time or failure to cure properly.

What is the minimum thickness for an epoxy resin floor?

The thinnest epoxy floor coatings measure about 150 microns or 0.15mm thick per coat. The performance of these thin coatings can vary significantly based on the topcoat type.

How is epoxy resin floor coating thickness measured?

Epoxy floor coatings are measured in microns (µm) when the coatings are very thin, or millimetres (mm) when they are laid thicker.

Do you thin epoxy primer?

We advise against thinning epoxy prime with a solvent because it weakens the epoxy. Adding 5% lacquer thinner cuts its compressive strength by 35%, making it unsuitable as a structural adhesive. Using a solvent also lengthens the curing time, making the outcome unpredictable.

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