ME500 is a polyethylene copolymer film with non-woven fleece fabric. It is an intelligent membrane providing perimeter window seal for airtight internal & weathertight external joints.

Usage/purpose

ME500 Duo Flexible Window Membranes (E & W) comprises a tear-proof woven fleece fabric with a polyethylene copolymer film. An integrated movement pleat is included in the foil which complies with the planning and installation recommendations of DIN 4108-7 and with the RAL Quality Assurance Association for windows and doors. It is attached to the wall with butyl adhesive, and to the window /door with a self-adhesive strip. The product has a specially designed reactive foil - water vapour permeability (sd value) changes depending on the humidity inside the joint. This allows the product to perform as an intelligent seal for airtight internal joints, and weathertight breathable external joints. The intelligent reactive system ensures that the joint always dries at the maximum rate. In non-fenestration applications, the membrane can be used to seal across adjacent insulated panels as an airtight or weathertight seal

Product Benefits

• The variable sd value ensures that the joint dries out quickly, thus protecting against mould and moisture damage
• Single product acts as internal airtight seal and external weathertight but breathable seal
• Easy fixing to frame and wall

Data Sheets

Technical Data Sheet
Safety Data Sheets
Technical Guidance Document



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.