Triflex StairCoat

Partially reinforced waterproofing and surfacing PMMA system for stairs above open or unoccupied space
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CE certified

External stairs and stairwells are vulnerable to water, mechanical and chemical damage as they are not only open to the elements but are also particularly susceptible to mechanical damage, particularly at nosings. To protect the long term integrity of the structure, and to provide a safe and secure environment for users it is essential that a robust waterproofing and surfacing system is used.

Providing a combination of heavy duty, highly durable surfacing on the treads with proprietary or resin based edge nosings, Triflex StairCoat is the answer, offering a long term protective solution. The system is ultra fast curing and cold liquid applied, allowing installation to be completed quickly, without the use of hot works, and with minimal impact on users.

System highlights

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Dynamic crack bridging, locally reinforced waterproofing

Even high risk areas pose no problem for this hard wearing solution, as the system incorporates a fully reinforced waterproofing membrane locally to accommodate movement within the structure.

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Cold applied system

There is no risk from hot works during installation as all our materials are applied in a totally cold liquid form, curing to create a solution that lasts.

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Fast curing with rapid installation

Rapid curing and easy to install, Triflex allows buildings to remain occupied during installation, limiting access restrictions and unnecessary disruptions to everyday life. Installation can be carried out all year round, and the majority of system variants still cure quickly at temperatures down to 0°C.

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Asphalt overlay

Many stairs and stairwells have historically been waterproofed using asphalt which over time will fail. With more than 30 years' experience, Triflex StairCoat is the ideal solution for directly overlaying failing asphalt. In fact, whatever the substrate, we can provide a quick, easy and reliable overlay solution.

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Safety and environmental

The solvent and isocyanate free resin technology has been assessed under BREEAM principles and can contribute to A+ ratings. The levels of skid resistance of a number of the finish variants make these particularly suitable for high risk, frequently trafficked areas.

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Versatile design

Available in either Quartz Design or Chips Design these system variants offer different textures and surface finishes, combined with over 50 standard colours the system can be tailored to meet aesthetic and project needs.

Triflex StairCoat

Application areas

  • External cantilevered stairs and stairwells
  • External stairs and stairwells over open or unoccupied space

Compatible substrates

  • Concrete, concrete repair materials and screeds
  • Asphalt and polymer modified asphalt
  • Existing membranes
  • Steel
  • Structural plastics
  • Timber

Suitable constructions

  • Cast in situ concrete
  • Permanent formwork with in situ concrete
  • Precast concrete planks with or without structural topping
  • Precast double tee units with or without structural topping
  • Steel / galvanised steel / structural plastic / timber constructions

System variants

Quartz Design

Triflex Quartz Design features a high quality, anti-skid quartz and a durable coloured finish. With a choice of four quartz aggregate sizes providing a range of textures and over 50 standard colours it is easy to see why this versatile finish is our most popular.
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Chips Design

Triflex Chips Design is a low maintenance, durable coloured finish with decorative anti-slip chips. With a range of over 50 standard colours, there are countless possibilities available, enabling you to create a tailored solution for your project.
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Triflex StairCoat colour card

Finish colours

Triflex StairCoat is available in a range of over 50 finish colours and 2 finish options, the system can be tailored to meet aesthetic and project needs with special colours being produced to order.

For full details on the range of colours and finish options download the Triflex StairCoat colour card below.

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Colour card

Require an on-site survey or quote?

All installations are carried out by our network of Triflex Authorised Contracting Partners. If you have a project we can provide a free no obligation on-site survey and can put you in touch with local Triflex contractors in your area that will be able to provide you with a quote.

To organise your free on-site survey you can either complete our project enquiry form or contact your local Business Development Manager, who will be more than happy to discuss your requirements.

Triflex Authorised Contracting Partners can place orders by calling 01785 819119 or emailing

Project enquiry
Triflex StairCoat Nosing Examples


Triflex nosings are available in resin form to provide additional safety to a stair or stairway. By installing nosings onto the nose of each step, they help to clearly define the edge of the steps reducing the risk of falls, while protecting the edges further from potential wear and tear from heavy traffic.


ETA logo

Fully certified to the highest UK and European standards and classifications, including:

    ETAG 005 certified (localised waterproofing membrane)

    • 25 year expected working life

    Fire performance:

    • EN ISO-11925-2
    • EN ISO-9239-1
    • EN 13501-1

    Manufacturer certification

    • ISO 9001 Quality Management
    • ISO 14001 Environmental Management
    • ISO 50001 Energy Management

    Take a look at Triflex in action

    Looking for support?

    Delivering solutions together, that's our motto. If you require any support, have an upcoming project or just a general enquiry then please don't hesitate to get in touch, we're always happy to help.