Flowcrete helps you choose the best resin floor for the job

  • 31 Jan 2019

The two main types of resin floors are polyurethanes (PU) and epoxies, and each has differing properties suited to particular uses so it’s important to choose the correct one for the job. Choosing the wrong flooring solution can result in costly repairs or even complete floor failure down the line.

While both are called resins, epoxy and PU floors should not be confused – it’s important to understand the differences between the two.

Admittedly they do share some similarities, such as being two-component systems (a resin and a hardener) that when brought together undergo a process of stoichiometric curing to form a solid layer. In both cases this results in a seamless, impervious coating that can be applied quickly in large quantities, but they are two very different types of materials with specific characteristics and uses.

Screen Shot 2019-01-31 at 17.40.34The main difference between these two types of materials is in the molecular structure, which affects how it fuses together during the curing process. There are multiple types of components that can be used and that will vary the end result slightly, but essentially PUs have a higher cross-linked density than epoxies, making them the harder wearing of the two.

Consequently, PU systems have long been associated with offering strength, durability and resilience when faced with a variety of testing conditions, such as heavy footfall, physical impacts, extreme temperatures and corrosive chemicals. Therefore, PU systems are ideal for industrial facilities due to their robust nature, meaning that they can survive the abuses of industrial operations for a very long period of time.

Equally, the superior chemical resistance of PU floors has made them popular in the food & beverage industry, where corrosive acids and by-products are found in large quantities. 

Epoxies, on the other hand, are much more rigid in terms of structure and cannot tolerate intense heat as well. To exemplify this, some epoxy coatings are heat resistant to temperatures up to 65°C, whereas PU systems are available that can tolerate 120°C. Epoxies can be very easily adapted for a wide variety of environments and are available in a much wider range of colours, styles, effects and decorative options.

Unless there is a specific challenge or requirement for a PU, there will more than likely be an epoxy floor that is up to the task at hand, and which can do so in bright and glossy tones, glittering light reflective surfaces or multi-toned swirling shades.

This, therefore, gives designers the creativity to install unique floors that convey the interior design scheme or a brand identity. This has made epoxies a go-to floor for large-scale commercial venues such as shopping centres and airports as well as in less heavy-duty industrial spaces or for customer-facing processing zones that need to look good as well as be functional.

PU systems also tend to be thicker and heavier than epoxies, which is great for absorbing impacts and thermal shock, but if weight and space is an issue then epoxies offer a thinner and lighter option.

However, it should be noted that when talking about PU it’s important to bear in mind that there are a few different types. There are full PU “liquid vinyl” type floors, which are great for creating soft surfaces underfoot due to the elastic nature of PU. However more common are PU deck coatings used for car parks and PU concrete systems, which are the most failure resistant type of resin flooring available. Although not particularly aesthetically pleasing, PU concrete can be customised with anti-slip aggregates, anti-bacterial additives and is highly adept at dealing with rising moisture.

To find out more about what resin floors best suit a specific environment, get in touch with the resin flooring specialists Flowcrete today.

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