All productsVantell Product System

VDSBT Series - Double-Sided Butyl Tape

A premium double-sided butyl tape that creates concealed gasket-style waterproof and airtight bonds.

Product Overview

VDSBT Series Double-Sided Butyl Tape is a premium self-adhesive butyl sealant tape designed to create strong, watertight, and airtight bonds between different building materials. Its double-sided format provides a gasket-style seal between surfaces, making it suitable for concealed sealing and bonding applications.

VDSBT is especially useful for integrating interior vapor barrier films to walls and ceilings, sealing membrane lap joints, and creating robust airtight and waterproof connections in challenging building envelope conditions. It provides reliable adhesion and flexible sealing performance where a dual-sided bond is required.

Product Information

Product SeriesVDSBT Series
Product TypeDouble-sided butyl sealant tape
MaterialButyl
Application SystemWaterproof flashing & butyl sealing system
Primary FunctionDouble-sided bonding, airtight sealing, waterproof lap sealing, and gasket-style joint protection

Available Sizes

ModelSpecificationPackage
VDSBT-50230.05 m × 23 m12 rolls / ctn
VDSBT-100230.10 m × 23 m6 rolls / ctn

Key Benefits

  • Double-sided butyl tape for concealed bonding and sealing

  • Creates watertight and airtight bonds between building materials

  • Suitable for vapor barrier film connection to walls and ceilings

  • Provides gasket-style sealing for membrane laps and overlap joints

  • Strong adhesion to waterproof membranes, cement mortar board, and pre-painted steel plate

Technical Data

Test ItemStandard / MethodSubstrate / ConditionTest Result
Material--Butyl
Heat ResistanceJC/T 942-200480°C, 2 hNo bleeding, no cracking, no deformation
Low Temperature FlexibilityJC/T 942-2004-40°CNo cracks
180° Peel AdhesionJC/T 942-2004Waterproof membrane; requirement: ≥ 0.4 N/mm0.73 N/mm
180° Peel AdhesionJC/T 942-2004Cement mortar board; requirement: ≥ 0.6 N/mm1.30 N/mm
180° Peel AdhesionJC/T 942-2004Pre-painted steel plate1.60 N/mm
Peel Adhesion after Heat AgingJC/T 942-2004Waterproof membrane; 80°C, 168 h1.45 N/mm
Peel Adhesion after Heat AgingJC/T 942-2004Cement mortar board; 80°C, 168 h1.04 N/mm
Peel Adhesion after Heat AgingJC/T 942-2004Pre-painted steel plate; 80°C, 168 h0.92 N/mm
Water Immersion AdhesionJC/T 942-2004Waterproof membrane; water immersion, 168 h1.99 N/mm
Water Immersion AdhesionJC/T 942-2004Pre-painted steel plate; water immersion, 168 h1.38 N/mm
System Note: For best long-term performance, this product should be used as part of a complete Vantell building envelope moisture management system.

Key Applications

  • Double-sided sealing between building materials
  • Interior vapor barrier film bonding to walls and ceilings
  • Waterproof and airtight lap joint sealing
  • Gasket-style sealing for membrane overlaps
  • Critical building envelope joint and transition sealing