ME010 FR Window & Door Sealing Membrane

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FR Window & Door Sealing Membrane (ME010) is a vapour permeable polyester, airtight and fully watertight membrane used as a perimeter membrane seal to the external side of glazed units such as windows, doors, and curtain walling.

When correctly installed with illbruck FR Membrane Adhesive (SP025), it provides an air and fully watertight seal over the construction joint which remains breathable to enable any trapped incidental moisture or condensation to escape out through to the external side of the wall construction.

It can also be used to seal and protect horizontal and vertical linear joints between sheathing boards and the main structure.

It is available in a range of pre-cut slit widths from 60 mm to 400 mm wide.

When bonded to compatible substrates with a minimum Class A2-s1, d0 fire performance with illbruck FR Membrane Adhesive (SP025), the combined system has been tested and achieves a Class B-s1, d0 fire performance in accordance with EN 13501-1.

When tested for water resistance in accordance with EN 1928 with a 2 kPa head of water, FR Window & Door Sealing Membrane (ME010) remains watertight for 24 hours and meets both the criteria for a Class W1 membrane in accordance with EN 13859-2 and the more onerous requirements stated for a Type A water resistant membrane as given in EN 13984.

Illbruck’s FR Window & Door Sealing Membrane (ME010) should be used in conjunction with FR Breather Membrane Black (ME014) as a full façade breather membrane. When used together they form a continuous weather and airtight barrier around the full building envelope including structural openings.

It is important that FR Window & Door Sealing Membrane (ME010) is installed in the correct orientation with the smooth/coated side always facing outwards towards the external environment.


Illbruck FR Window & Door Sealing Membrane (ME010) is a permanently UV stable, specially coated polyester based, airtight and watertight membrane that is compliant with the regulatory requirements for use on ‘Relevant and Higher Risk Buildings’ as described in Approved Document B.

FR Window & Door Sealing Membrane (ME010) is available in a range of slit widths to seal the external perimeters of glazed units and curtain walling.

Safety data sheet must be read and understood before use.

  • Permanently UV-resistant
  • Reaction to Fire Class B-s1, d0 when bonded with FR Membrane Adhesive (SP025).
  • Easy to apply, fold, and manipulate
  • Water resistant to EN 1928 at 24 hours and resistant to wind driven rain.
  • Airtight and can achieve Passiv Haus standards.
  • Breathable (vapour open)
  • High range of in-service temperature resistance
  • Environmentally friendly EC1+
  • Non branded, plain black finish – suitable for visible applications
ME010 Declaraton of Performance (en-GB).pdf Declaration of Performance
ME010 Safety Data Sheet (en-GB).pdf Safety Data Sheets
ME010 Air Tight EC1 plus Certification (en-GB).pdf Test / Certification Document
illbruck BBA Certificate ME010 & SP025.pdf Test / Certification Document
ME010 Technical Data Sheet (en-GB).pdf TDS
Illbruck FR Façade Membrane Range Brochure (en-GB).pdf Brochure