Sealoflex Endura Roof Waterproofing System

Manufacturer: Icopal 

Materials: Poly Methyl Methacrylates (PMMA) 

The Sealoflex Endura Roof Waterproofing System is based on a reinforced, two-component, solvent-free, liquid applied polymethyl methacrylate membrane. The system is comprised of the following components:
• Sealoflex Endura — a polymethylmethacrylate resin, available in Blue/Grey
• Sealoflex Endura Cat Powder — a benzoyl peroxide catalyst
• Sealoflex Endura Reinforcing Fabric — a polyester fleece with a nominal mass per unit area of 110 g·m–2

Sealoflex Endura is available in winter and summer grades, for use where application temperatures are between 0 and 20°C, and 10 and 35°C respectively.

The system is applied to provide a waterproofing membrane with a minimum dry film thickness of 1.8 mm.

BBA logo

Number: 20/5753 PS1
Issue date: 10/08/2020

Approved for use on

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

The Sealoflex Endura Roof Waterproofing System is satisfactory 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 Steel 

The system has been assessed for use on concrete primed with Sealoflex Endura Concrete Primer, asphalt primed with Sealoflex Endura Asphalt Primer, and unprimed steel. The adhesion to, and compatibility with, other substrates must be confirmed by test.


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.

Fire Safety

When tested to DD CEN/TS 1187 : 2012, Test 4, a composite build-up comprising 19 mm thick plywood primed with a synthetic rubber resin, 120 mm thick PIR Insulation board bonded to a vapour control membrane with a two-component PUR adhesive, a 0.6 mm thick bitumen carrier membrane, the Sealoflex Endura Roof Waterproofing System applied at a rate of 3.1 kg·m–2, including Sealoflex Endura Reinforcing Fabric, was classified in accordance with BS EN 13501-5 : 2005 as European Class BROOF(t4).

In the opinion of the BBA, a roof incorporating the system will be unrestricted under the national Building Regulations in the following circumstances:
• Protected or inverted roof specifications, including an inorganic covering listed in the Annex of Commission Decision 2000/553/EC,
• a roof garden covered with a drainage layer of gravel 100 mm thick and a soil layer 300 mm thick,
• irrigated roof gardens, green roofs and brown roofs.

The designation of other specifications should be confirmed by reference to the requirements of the documents supporting the national Building Regulations.

The system, when used in pitches of greater that 70°, excluding upstands, should not be used on buildings in England and Wales that have a storey at least 18 m above ground level and contain: one or more dwellings, an institution, a room for residential purposes (excluding any room in a hostel, hotel or boarding house), student accommodation, care homes, sheltered housing, hospitals or dormitories in boarding schools.

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 ensurethe overall fire-rating of the roof is not compromised.

Certified Products

The following products are also covered by the same certification:

  • Downloads

Interested in this product?

Website disclaimer:

“The information contained in this Website is for general information purposes only. The information is provided by manufacturer members and their accreditation certifications and while we endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with regard to information or products. Any reliance you place on such information is therefore strictly at your own risk.

LRWA Is not an accreditation body and does not test products or have a role in determining whether a product or system is fit for purpose. An agrément certificate is only issued for a successful product or system following a detailed assessment including both laboratory testing and inspections by the certificate provider.”