Icopal’s Monobond LT - High Performance, Low Temperature Sealant Tape  For Construction Membranes

Monobond LT Tape

Monobond LT is a high performance low temperature Sealant Tape for construction membranes.

Icopal’s Monobond LT is a permanently flexible double-sided tape for easy joining of side and end laps in polyethylene membranes. Monobond LT’s special formulation allows installation at temperatures down to -12ºC, ensuring work can carry on in virtually the coldest of weather.

Features & Benefits

  • Permanently flexible
  • Work can continue in the coldest weather.
  • Makes impermeable airtight waterproof seals at laps to ensure overall vapour resistance of the membrane.
  • Quick and easy joining of side and end laps.
  • Adheres to most construction materials including concrete, steel and timber.


Monobond LT is suitable for making impermeable, waterproof seals at laps in vapour control layers, gas protection membranes, damp proof membranes and pollution control membranes.

Vapour Tight Laps: The sealing of laps in VCLs is essential to the overall vapour resistance of the membrane. Monobond LT can also be used at roof and wall perimeters to seal VCLs to the structure, improving the air-tightness of the building.

Damp Proof Membranes: To comply with British Standards and Building Regulations, DPMs incorporated in ground bearing floors must have all joints sealed to prevent moisture penetrating the floor. Monobond LT enables secure, waterproof joints to be formed quickly and easily. 

Product Availability

Product Code Description Pack Size Pack Weight
3002888 Monobond LT Tape (15mm x 2mm x 24m) 20 rolls per box 1.1kg
3002889 Monobond LT Tape (30mm x 2mm x 24m) 12 rolls per box  2.2kg


Product Data and Performance

Performance Data:
Composition: Non-hardening, permanently flexible, high performance butyl sealant tape
Thickness: 2mm
Colour: Blue
Application Temperature: Down to -12ºC
Service Temperature: -40ºC to +90ºC
Adhesive Strength: 1.9 kN/cm2 (contact time 1hour)
Elongation: 400% at 100 mm/min
Release Sheet: Single release paper



Surfaces must be clean, dry and grease free. Clean metal surfaces with white spirit. Wire brush and prime masonry and concrete surfaces.

Apply Monobond LT to one surface, remove the backing strip and press overlap sheet firmly into place. Use a roller to ensure a good seal.

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