HS Butyl Membrane Tape

• Prevents air leakage through lap joints to comply with the requirements of Approved Document L2:2006.
• Can be applied in cold conditions without affecting long-term performance.
• Reduces condensation in built-up metal roofing systems by effectively sealing the metal liner, ensuring compliance with the Building Regulations Approved Document L2:2006.
• Unique high tack adhesive provides instant grab.
• Special high-strength, non-tear laminated film.
• Offers outstanding adhesion to coated steel and aluminium sheets without the need for primers.
• Supplied in self-wound rolls for easy application.
• Very low moisture vapour transmission rate.
• Predicted service life can exceed 20 years.

Surface preparation

• All surfaces should be clean, dry, and free from frost, grease, and loose materials.

• When cleaning contaminated substrates, HS Butyl recommends using propan-2-ol (IPA) and allowing it to dry before applying the butyl tape.

Application

• Apply directly from the reel onto one surface and press along its entire length to ensure good initial adhesion.

• Remove the backing paper, position the other surface onto the butyl tape, and push firmly to seal across the joint.

• Use a roller with firm pressure to ensure a good bond.

• A high performance air seal and moisture barrier tape developed especially for sealing side lap joints of metal roof and wall liners to reduce condensation and increase airtightness in buildings.
• Polyband® can be used as recommended in the MCRMA Technical Paper No.14 Guidance for the Design of Metal Roofing and Cladding to comply with Approved Document L2:2006.
• Polyband® can be used on purlins to prevent cold-bridging.
• Polyband® can be used to separate different metal components to prevent bimetallic corrosion.
• Care must be taken to seal the joints at the eaves, ridge and any pipe or service penetrations in order to provide a completely airtight building.
• The use of GCA® preformed butyl sealant is recommended for sealing between the end laps of liner trays.
• Polyband® can be used to seal sidelaps in steel decking.
• Polyband® can be used to overtape joints in vapour control layers.

• 1mm x 15mm x 25m – 20 rolls per box
• 2mm x 15mm x 22.5m – 20 rolls per box
• 1mm x 30mm x 10m – 24 rolls per box
• 1mm x 30mm x 20m – 12 rolls per box
• 1.5mm x 30mm x 10m – 12 rolls per box
• 2mm x 30mm x 22.5m – 10 rolls per box
• 1mm x 50mm x 20m – 6 rolls per box
• 1.5mm x 50mm x 10m – 6 rolls per box
• 8mm bead x 6m – 22 rolls per box
• 10mm bead x 4.75m – 20 rolls per box

24 months when stored flat in original packaging in cool, dry conditions.