Triflex Protect Solvent-Free roof waterproofing system

Manufacturer: Triflex 

The Triflex ProTect ® Solvent-Free Roof Waterproofing System is based on a reinforced, two-component, solvent-free, liquid-applied polymethylmethacrylate membrane. The system is comprised of the following components:

  • Triflex ProTect — a polymethylmethacrylate resin
  • Triflex Catalyst — a benzoyl peroxide catalyst
  • Triflex 110 g Reinforcement — a polyester fleece with a nominal mass per unit area of 110 g·m–2

Ancillary items which may be necessary for installation of the system and which are included in this Certificate are:

  • Triflex Cryl Primer 276 — a two-component, polymethylmethacrylate primer for use on porous substrates such as concrete, cementitious screeds and timber/plywood
  • Triflex Cryl Primer 222 — a two-component, polymethylmethacrylate primer for use on asphalt, other bituminous substrates, solar reflective coatings and hot melt membranes
  • Triflex ProDetail — for use at details and for repairs, and the subject of Product Sheet 4 of this Certificate
  • Triflex Cryl Finish 205 — a two-component, polymethylmethacrylate-based decorative finish available in a range ofcolours
  • Triflex Cleaner — cleaner used for cleaning tools, cleaning substrates and the reactivation of the cured Triflex ProTect membrane prior to overcoating when work is interrupted for periods in excess of 12 hours.

BBA logo

Number: 13/5051 PS1
Issue date: 09/04/2020

ETA logo

Number: 03/0020
Issue date: 17/05/2018

Approved for use on

Brown Roofs Flat Roofs Green Roofs Inverted Roofs Pitched Roofs Roof Gardens Zero Falls Buried Roofs 

For use as a fully adhered waterproofing layer on new and existing:

• exposed flat and pitched roofs with limited access
• protected and inverted roofs with limited access (including zero fall roofs)
• green roofs, brown roofs and roof gardens (including zero fall roofs).


Concrete Mastic Asphalt Steel 

The system has been assessed for use on concrete primed with Triflex Cryl Primer 276, asphalt primed with Triflex Cryl Primer 222, and unprimed steel. The adhesion to, and compatibility with, other substrates must be confirmed by test.


25 Years 

Accelerated weathering tests and evidence from existing installations confirm that satisfactory retention of physical properties is achieved. All available evidence indicates that, under normal conditions, the system will have a service life in excess of 25 years.

Installation Requirements

The system should only be installed by installers who have been trained and approved by the Certificate holder.

Puncture Resistance

P1 - non accessible

Least compressible (eg concrete)

P4 - roof gardens, inverted roofs and green roofs)

Most Compressible Substrate (eg insulation)

Fire Safety

A composite build-up comprising:

  • the Triflex ProTect Roof Waterproofing System (pebble grey) applied at a rate of 3.1 kg·m–2, including Triflex 110 g Reinforcement
  • a 0.6 mm thick bitumen carrier membrane
  • 120 mm thick PIR Insulation board bonded to a vapour control membrane with a two-component PUR adhesive
  • 19 mm thick plywood primed with a synthetic rubber resin, when tested in accordance with DD CEN/TS 1187 : 2012 (test 4) was classified in accordance with EN 13501-5 : 2010 as European Class BROOF(t4), and when tested in the flat position in accordance with BS 476-3 : 2004 achieved an EXT.F.AA rating. The system can contribute to a roof being unrestricted under the national Building Regulations.

Protected or inverted roof specifications, including an inorganic covering listed in the Annex of Commission Decision 2000/553/EC, can be considered to be unrestricted under the national Requirements.

The designation of other specifications should be confirmed by: England and Wales — test or assessment in accordance with Approved Document B (Volumes 1 and 2), Appendix A, clause A1. Scotland — test to conform to Mandatory Standard 2.8, clause 2.8.1. Northern Ireland — test or assessment by a UKAS accredited laboratory, or an independent consultant with appropriate experience.

In the opinion of the BBA, irrigated green roofs and roof gardens will be unrestricted under the national Requirements.

If allowed to dry, plants used may allow the spread of flame across the roof. This must be taken into consideration when selecting suitable plants for the roof. Appropriate planting, irrigation and/or protection must be applied to ensure the overall fire-rating of the roof is not compromised.

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