ME501 is a high strength, tear resistant 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. It is also available with gasket options for fixing to window profiles. The product meets the recommendations of the RAL Quality Assurance Association for windows and doors. Successfully tested by MPA Hannover to EN1026 (airtightness) & EN1027 (weathertightness). The membrane is attached to the window with SP525 adhesive, enhanced ‘acrylic adhesive +’ strip, or integral gasket and to the construction reveal material with SP525 adhesive. Self adhesive version (ME501VV) also available.

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.

The product meets the recommendations of the RAL Quality Assurance Association for windows and doors. Successfully tested by MPA Hannover to EN1026 (airtightness) & EN1027 (weathertightness). The membrane is attached to the window with SP525 adhesive, enhanced acrylic adhesive + strip, or integral gasket and to the construction reveal material with SP525 adhesive.

Safety data sheet must be read and understood before use.

Product Benefits

• 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

Made To Order Sizes

Size : 1000mm (Lead Time : 21 ,  Minimum Order Quantity : 15)
Size : 900mm (Lead Time : 21 , Minimum Order Quantity : 16)


Data Sheets

Technical Data Sheet
Safety Data Sheets
Application Instructions
Remedial Method Statements




The above information is based on current test data, health and safety information and application instructions supplied by our suppliers and manufacturers of the products. It is supplied for guidance and to the best of our knowledge is true and accurate. Customers should satisfy themselves to the suitability of the products in its intended use and no guarantee is given or implied as the conditions of actual use are beyond our control. If in doubt the customer should consult the designer of the project or the local building control. 

Fire Stopping Shop, disclaim any liability for loss, damage or other expense which may arise from the use of this information, data or products refereed to and reserve the right to amend or change any details without notice. This statement does not affect your statuary rights.