Shop by Brand
Shop by Price

Sika® Multi-Seal BT Self Adhesive Butyl Flashing Tape 150mm X 10M

Sika® Multi-Seal BT Self Adhesive Butyl Flashing Tape 150mm X 10M
Zoom  Zoom
Our Price:  CALL(Inc. 20% VAT)(£0.00 Exc. VAT)

Brand:  Sika


No stock, delayed despatch  

No stock, delayed despatch

Sika® MultiSeal BT Self Adhesive Butyl Flashing Tape 150mm Wide X 10M Long


Sika® MultiSeal BT is a high-adhesive butyl sealing / flashing tape made of butyl rubber compound, protected by a reinforced aluminium metal film.   It is a premium butyl flashing tape which is ideal for use in most flashing applications and is polycarbonate safe.  Once installed correctly Sika® Multiseal BT will provide years of waterproofing.  It is the perfect product for joining your polycarbonate sheets to the wall when construction a lean to conservatory, canopy or carport. 

Sika® Multiseal BT is a non bituminous flashing tape which is one of the only flashings approved for use with polycarbonate roofing sheets. 

Typical Applications Include: 

  • Roofing (including Polycarbonate & Sheet Metal)
  • Facades
  • Broken Roof Tiles
  • Leaking Gutters
  • Chimneys & Roof Lights
  • Air Conditioning Pipework
  • Caravans & Trailers
  • Duct Works

Sika® Multiseal BT is extremely easy to apply.  The self adhesive backing can be applied cold and give good adhesion to plastics, glass, polycarbonate, steel, timber and most other common building materials.  It has excelent adhesion at low temperatures, is weather-proof and solvent free. 

Application details: 


All loose particles, release agents, dust, paint, rust and other poorly adhering materials must be removed by suitable hand or mechanical preperation techniques.  Metallic substrates and plastics (except polycarbonate) should be thoroughly cleaned with solvent e.g. white spirit prior to application.  Please allow the solvent to completely evaportae before the tape is applied.  PLEASE NOTE:  DO NOT APPLY SOLVENTS TO POLYCARBONATE SHEETS. 

Installation operating temperature +0°C Minimum // +40°C Maximum.  At temperatures below +5°C the tape and the substrate should be warmed before application. 

All surfaces must be dry and free from dust before and during application. 


Cut the MultiSeal BT to the desired length, remove the release liner and press the tape firmly onto the substrate with a suitable pressure roller.  All joints must be overlapped by a miniumum of 50mm. 


Not suitable for sealing against water pressure.  Butyl adhesives are sensitive to solvents, please check chemical compatibility of the butyl adhesive with the substrate. 



Layer thickness:  1.0mm inc aluminium foil

Density:  1.4g/cm³

Fire Rating:  E (EN 11925-2; EN 13501-1)

Service Temperature:  -30°C to + 90°C

Tensile Strength:        Longtitudinally & Transversally >150N/50mm (EN12311-1)

Chemical Base:  Butyl rubber compound



Store in dry conditions and protected from direct sunlight at temperatures of between +5°C and +40°C


Full technical data sheet available upon request.