3M is pleased to formally announce the introduction of 3M™ VHB™ Structural Glazing Tapes G23F and B23F.  These tapes are specifically designed to withstand the applications stresses and environmental conditions faced in demanding curtain wall glazing applications.

3M™ VHB™ Structural Glazing Tapes are available in grey or black with a film liner.  It is precision slit to meet application guidelines provided for your qualified project.

Application Guidelines:
3M™ VHB™ Structural Glazing Tape is a two-sided pressure sensitive acrylic foam tape designed to bond glass to metal frames in glass curtain wall systems.  Each application will be reviewed on a project specific basis.  Application guidelines will be based upon adhesion test results generated by 3M Technical Service.  These project specific application guidelines will be provided to the customer and must be followed during the glass bonding process.

Design Guidelines:
Note:  For tape areas calculations, the following guidelines can be used.  Please ensure that each project is reviewed and approved by your local 3M Technical Service Representative.

Dynamic Loads (deadload support):
For dynamic tensile or shear loads (such as windloads), a design strength of 12 psi (85 kPa) is used for 3M™ VHB™ Structural Glazing Tape.  This design strength provides a safety factor of at least five and was established based on material property testing as well as ASTM dynamic load testing for curtain wall applications.

Static Loads (no deadload support):
For static tensile of shear loads (such as dead weight loads, snow loads and other long term loads), a design strength of 0.25 psi (1.7 kPa) is used for 3M™ VHB™ Structural Glazing Tape.  This means 4 in² of tape per pound of load should be used to support static loads.  This guideline provides a safety factor of at least five.

Important:  Dynamic and static load calculations should be performed on unsupported deadload structural glazing applications.  The calculations resulting in the wider tape width should be used as the appropriate tape width for the application.

3M™ VHB™ Structural Glazing Tape Warranty:
For qualifying applications, 3M provides the curtain wall manufacturer the confidence that the tape can deliver high performance and long-term reliability.  Once your application and assembly process are approved by a 3M Technical Service Representative, 3M guarantees that the tape will not fail for the warranty period.  See your 3M Representative for details on obtaining the warranty for your project.