Triflex ProThan

An odour free PU liquid applied waterproofing solution ideal for use in sensitive environments
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Triflex updated certification

In highly sensitive environments such as hospitals, food processing and pharmaceutical facilities, it is sometimes necessary to use an odour free roof waterproofing system.

The BBA and ETA certified Triflex ProThan is the ideal solution as it utilises a solvent-free resin technology that is odour free during application. The cold liquid applied system does not require any hot works and can also be used internally within buildings without the requirement for additional ventilation.

Compatible with the majority of substrates and suitable for both new-build and refurbishment, the highly certified system is the obvious choice for highly sensitive roof waterproofing.

System highlights

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Odour and solvent free

The two component polyurethane resin used in Triflex ProThan is odour free during application, making it ideal for use in highly sensitive areas, such as hospitals, food processing, pharmaceutical and other sensitive facilities. The solvent free system can also be used in internal areas without the additional need for ventilation making it ideal for plant rooms and internal bunds

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Versatility and compatibility

Whether for refurbishment or new-build, Triflex ProThan is suitable for virtually all roofing applications. The significant costs, risks and disruption associated with removal of the existing membrane are eliminated as the system is compatible with almost all roof substrates. Even the direct overlay of failed single ply and other membranes is possible. Roof waterproofing made easy.

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Cold applied

There is no risk from hot works during installation as all Triflex materials are applied in a totally cold liquid form, curing to create a long term waterproofing solution.

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Single process application

Installation time and costs are significantly reduced when compared to multi-coat, typically solvent based, single component polyurethane systems. The single coat application eliminates the risks of inter-layer adhesion issues.

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Fully reinforced technology

The unique, highly flexible Triflex ProThan resin is used with a special high tensile strength polyester fleece to ensure that high levels of movement and cracking within the structure and between substrates can be accommodated. Proven fully reinforced waterproofing technology that stands the test of time.

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Tough and durable protection

The standard Triflex ProThan system is designed for foot traffic and provides exceptional puncture resistance when compared to many alternative materials. With the option to include a heavy duty wearing layer, even the most heavily trafficked industrial roofs can be securely waterproofed and protected from damage.

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Tried and tested

Triflex ProThan offers a complete waterproofing solution that will last for years to come. The system is certified and tested to the highest UK and European standards and offers proven performance.

ProThan Grid

Application areas

  • Highly odour sensitive environments
  • Internal waterproofing
  • Refurbishment
  • New build
  • Overlay of existing failed waterproofing systems
  • Warm roofs (all insulation types)
  • Inverted roofs
  • Podium / plaza decks
  • Buried membrane roofs
  • Green roofs
  • Brown roofs
  • Blue roofs
  • Bunds / storage tanks / silos / plant rooms

Compatible substrates

  • Felt
  • Asphalt
  • Bitumen
  • Single ply membranes (e.g. PVC, PVC-P, EPDM, EVA, TPO, FPO, TPE, CPE, PIB, VET etc.)
  • Cementitious materials (concrete, brickwork, masonry)
  • Metals and coated metals
  • Plastics
  • Coatings (e.g. polyurethane (PU), polyurea (PUA), polymethyl methacrylate (PMMA), etc)
  • Solar reflective coatings
  • Glass
  • Timber

System variants

Triflex ProThan

Suitable for both new build and roof refurbishment in highly sensitive environments, ProThan is the ideal solution for facilities requiring an odour free roof waterproofing system that's compatible with the majority of substrates, including single ply.
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Triflex ProThan warm roof

The Triflex ProThan warm roof system can incorporate polyisocyanurate (PIR), vacuum insulated panels (VIP), mineral wool and expanded polystyrene (EPS) insulation or combinations of the materials. The build-up is dependent upon the required U-value and condensation risk analysis
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Optional heavy-duty finish

Triflex ProThan with a heavy duty finish can be used locally for walkways and higher trafficked areas where increased skid, impact and abrasion resistance are required, or for entire roof areas.
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Resin colour

Triflex ProThan is available in 7009 Green grey and 7016 Anthracite grey.

Triflex ProThan resin colours
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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

Certification and approvals

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Full system certified, tested and approved to the highest UK and European standards and classifications, including:

  • BBA
  • ETAG 005 
  • UKTA
  • FLL : Root and rhizome resistant
  • EN 13948 : Resistant to root penetration
  • EN 13583 : Hail resistant
Tested to:
  • EN 13501-5 : Class BROOF (t1), (t4)
  • EN 13501-1 : Class E
  • BS 476-3 : EXT.F.AA
Satisfies or contributes to satisfying:
  • NHBC Standards 2020
Environmental rating:
  • BRE / BREEAM rated
Heat resistant:
  • Tested for overlay at 250°C
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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.