Moy UK Limited

Enkopur 1K Polyurethane Waterproofing System

Manufacturer: Moy UK Limited 

Materials: Polyurethane 

The Enkopur 1K Polyurethane Waterproofing System comprises:
• Enkopur 1K — a one-component, liquid-applied, moisture-reactive polyurethane prepolymer-based membrane
• Enke Polyflex Fleece — a 1.10 kg∙m-2 polyester fleece for use a reinforcement
• Enke Universal 933 Primer — a transparent, solvent-based, fast-drying synthetic resin solution, slightly yellowish in colour, for use on concrete, bitumen sheets, extruded polystyrene foam and steel
• Enke P-O Primer — a solvent based yellow primer for use on thermoplastic polyolefin membranes
• Enke Primer 2K — a two-part polyurethane-based primer for use on plasticised PVC membranes
• Enke Glass Primer — a silane-based primer for use on glass and glazed tiles.

Enkopur 1K is available in  anthracite, silver-grey and black. Other colours are available on request.

The membrane is applied by rolling or brushing in multiple layers to provide a waterproofing membrane with a minimum dry film thickness of 2.1 mm.

BBA logo

Number: 15/5223
Issue date: 16/08/2019

ETA logo

Number: 04/0020
Issue date: 21/06/2013

Approved for use on

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

for use on pitched, flat and protected zero fall roofs with limited access, including green roof and roof garden specifications and podia.


Concrete Glass Insulation Boards Metal Reinforced Bituminous Membranes Single Ply Membranes - PVC Single Ply Membranes - TPO XPS/PIR 

The system has been assessed for use on the following primed substrates:
• concrete
• polymer modified bitumen sheets
• metal
• TPO roofing membranes
• PVC roofing membranes
• glass.
For use with other substrates, the Certificate holder’s advice must be sought. The adhesion to, and compatibility with, other substrates must be confirmed by test (see also section 13.4)


25 Years 

Under normal service 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

Most Compressible Substrate (eg insulation)

P4 - roof gardens, inverted roofs and green roofs)

Least compressible (eg concrete)

Fire Safety

When tested(1) in accordance with DD CEN/TS 1187 : 2012, Test 4, a system comprising 1 kg∙m-2 Enkopur 1K (grey) with an embedded 110 g∙m-2 polyester reinforcing fabric and overcoated with 2 kg∙m-2 Enkopur 1K, applied to a substrate of 19 mm plywood board with 2.4 mm bitumen membrane under 40 mm PIR insulation with hard top composite board and primed with 0.2 kg∙m-2 Enke Universal 933 Primer, was classified(1) as BROOF(t4) in accordance with EN 13501-5 : 2005, Table 1. (1) Test Report Reference 351720, issued by Exova Warringtonfire. The Report is available from the Certificate holder.

In the opinion of the BBA, a roof incorporating the system will be unrestricted under the national Building Regulations in the following circumstances:
• a roof garden covered with a drainage layer of gravel 100 mm thick and a soil layer 300 mm thick
• when protected by an inorganic covering (eg gravel or paving slabs) listed in the Annex of Commission Decision 2000/553/EC
• when used in a irrigated roof garden or green roof specification.

The designation of other specifications should be confirmed by:
England and Wales – test or assessment in accordance with Approved Document B, Appendix A, clause 1, 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.

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

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Moy Materials UK Limited

6 Mackean Street

T : 0141 840 4660

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