ME501 Duo Window Membrane HD

Class W1 Window Sealing Membrane

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ME501 is a high strength, tear resistant, air and weathertight, window & door sealing membrane made from polyethylene copolymer film with non-woven fabric. It can be applied before or after window installation to suit on-site details and programming. The membrane is attached to the window and construction material with SP525 Frame and Facade Sealant & Adhesive. ME501 is also available as a self-adhesive ME501VV.

Usage/purpose

ME501 provides a high performance seal to the perimeter joint between the window/curtain wall and the construction reveal. Due to the intelligent, variable vapour permeability (sd value), when used in an internal UK (warm) environment, it will be vapour-tight, and when used in an external UK (cold) environment it will be vapour open. This means that the membrane is suitable for interior and exterior use providing an air-tight and weather-tight seal whilst always complying with inside tighter than outside principles.

  • Complies with principle of ‘inside tighter than outside’ in order to facilitate efficient vapour control
  • BBA accredited alternative to EPDM in many applications
  • Excellent drying potential (due to the membrane’s vapour permeability) avoiding mould growth and physical damage
  • UV stable - will tolerate up to 12 months direct exposure prior to covering
  • Fully compatible with illbruck Building Protection Membranes
  • Weathertight against driving rain to 1200 Pa
  • ME501VV self adhesive version also available
Paste Adhesive Membrane Installation Guide Issue 6.pdf Application Instructions
MSDS Sealing Tapes & Membranes (en-GB).pdf Safety Data Sheets
Site Water Tightness Testing Guidance 2021 (en-GB).pdf Technical Guidance Document
ME500_ME501 Application Advice For Low Temps Technical Advice (en-GB).pdf Technical Guidance Document
ME501 Advice on Low Temperature Conditions Technical Advice (en-GB).pdf Technical Guidance Document
ME508 and ME501 Duo Window Membranes BBA Certificate (en-GB).pdf Test / Certification Document
IB_ME501_datasheet_Duo Window Membrane HD_en-GB_v1.pdf TDS