Norton®Structural Glazing Spacers
Saint-Gobain Performance Plastics Corporation
One Sealants Park
Granville, NY 12832
Tel: (518) 642-2200
Toll Free: (800) 724-0883
Fax: (518) 642-2793
E-mail: sgppl.marketing@saint-gobain.com
Web site: http://www.nortonfoam.com
Norton®
Spacer Tapes Contribute To The Success
Of Structural Silicone
Glazing And Cladding Systems
Thermalbond®
V2100 and V2200 Spacers
Thermalbond®
is a registered trademark.
PRODUCT OVERVIEW
Structural silicone systems for glazing
and cladding require compatible spacers to achieve reliable performance
of the silicone adhesives. Norton's Thermalbond® is the
most widely used spacers for structural silicone systems. They are available
in a wide variety of sizes to accommodate typical silicone joint designs.
And,
in addition to holding the glass or cladding at a predetermined distance
from the substrate for proper silicone joint design, they also offer a
number of other benefits, including compatibility with other silicone sealants,
a special adhesive surface, curing of sealants, a special formulation and
thermal resistance.
Compatibility:
Thermalbond® is compatible
with the silicone sealants and materials most frequently used for structural
glazing and cladding (contact Technical Service for list).
Norton® Spacers will not
significantly affect the color, physical properties or adhesion of compatible
silicones. Because of the number of variables affecting each project, the
silicone manufacturer should be consulted for approval of all components
used with structural silicone systems, including Norton Spacers.
Adhesive Surface:
Norton® Spacers also come
with an aggressive pressure-sensitive adhesive on one or both sides. The
adhesive simplifies installation by securing the spacer into proper location
and in factory glazing by helping to temporarily hold the glass or cladding
substrate while permanent silicone adhesive is being installed and cured.
A removable polyethylene liner is adhered to one face of the tape to simplify
handling.
Curing of Silicone Sealants:
Norton® Spacers have an
open cell structure. This allows air and moisture to reach the silicone
to allow optimum curing.
Special Formulation:
Norton® Spacers are manufactured
from a specially formulated, high density, semi-rigid polymer foam. They
effectively maintain the required spacing between the glass or cladding
and the substrate, but are resilient enough to adjust to minor surface
irregularities and to cushion the glass during assembly. The resilience
of Norton® Spacers also enables them to accommodate differential
thermal expansion and contraction between glazing and metal framing.
Thermal Resistance:
Made of cellular foam, Norton®
Spacers have low thermal conductivity and help to reduce heat loss through
glass and condensation at framing members. This is especially important
with insulated glass units, since the metal spacers in the insulated glass
units can act as a thermal bridge, exposing curtainwall framing directly
to exterior temperatures.
Advantages:
- As a spacer for glass, metal,
stone, mineral cement and plastic panels in structural glazing systems,
including two- and four-sided structural silicone glazing of curtain walls,
storefronts, skylights and windows.
- To temporarily secure glazing or panels
to framework in shop fabrication of unitized structural silicone glazing
and cladding systems.
- To temporarily secure lightweight veneers
to substrates while permanent structural silicone adhesives are curing.
When used with thin stone, tile or architectural panels, this system can
reduce weight and minimize the need for exposed fasteners.
Thermalbond® V2100 Series
tape is recommended for field or shop installations.
Thermalbond® V2200 Series
tape is more conformable and specially designed for shop installation or
field installation of two-sided systems.
The products can also be used as a non-structural,
double-stick tape for vibration dampening.
Precautions:
Norton® Spacer tapes are
for use as spacers only. Their adhesive properties cannot be used as part
of the permanent fastening system or in any way to reduce the amount of
silicone adhesive recommended by the silicone manufacturer.
All mounting surfaces should be flat, without
ribs or serrations. In order to develop temporary adhesion, surfaces should
be dry, free from dirt, dust or contaminants. Wiping the bonding surfaces
with a cleaning solution such as alcohol, followed by a dry wipe with a
clean cloth is generally sufficient.
With some surfaces, it may be necessary
to prime the surface with Norton Tite-R-Bond™ 2287A adhesion promoter.Consult
Saint-Gobain Application Engineering for recommendations.
For four-sided on-site glazing or cladding,
the use of supplemental fasteners to hold the panels in place is necessary
until the silicone has cured in accordance with recommendations of silicone
manufacturer. (Supplemental fasteners may not be required when installing
lightweight veneer systems as described below or two-sided glazing).
Once Norton® Spacers are
applied, they cannot be removed or reused; therefore, position sections
carefully. Consideration should be given to the visual impact of the tape
when viewed through a clear, single lite glass. Aesthetics can be improved
by using a single side adhesive spacer tape with mechanical fasteners.
Contact Saint-Gobain Application Engineering for details.
Description:
Norton Sealants are a specially formulated
polyurethane foam tape faced with a pressure sensitive acrylic adhesive
which forms an aggressive bond to most surfaces.
There is a polyethylene liner that is removed
after application to expose the second adhesive face. The product is supplied
in a range of sizes wound in rolls for easy application.
INSTALLATION
Preparatory Work: Clean mounting
surfaces with a cleaning solvent such as alcohol and then wipe dry with
a clean cloth. This removes dirt loosened by the solvent. Change cloth
often. Caution: Observe fire safety precautions and provide fresh air and
ventilation when using solvents.
When recommended by Saint-Gobain Application
Engineering, apply Tite-R-Bond™ 2287A adhesion promoter as directed on
container.
Methods: Apply Norton®
Spacers from the roll to the metal framework. Press the tape down securely.
Do not touch the adhesive surface.
The thickness of the tape and the amount
of setback from the panel edge controls the silicone bead size. Recommendations
of width of the tape should be determined by the silicone manufacturer.
Do not remove the liner from the tape until
ready to secure the glass or panel in place. In some cases, removing the
liner from between the glass and tape after the glass is in place is advantageous.
Press the panel completely around the perimeter to insure complete adhesive
contact. Once all of the components are in place, the silicone can be gunned.
Follow the silicone manufacturer's recommendations with regard to the tooling
of the joint and general application techniques.
Precautions: Norton®
Spacers should be stored at 70°F and 50% relative humidity.
AVAILABILITY AND COST
Availability: Norton®
Spacers are available from Saint-Gobain and through a worldwide network
of master converters and authorized distributors.
Packaging: The product is wound
into rolls with the length of each roll depending on the thickness
of the
tape.
Rolls are packaged in bulk. The number
of rolls per carton depends on the width of the rolls; widths from 1/8"
to 56" are available. Sheets for die-cutting are also available.
Cost: Contact Saint-Gobain or an
authorized distributor for pricing. Norton® Spacers are
cost efficient. Compared to other types of spacers, they do not require
expensive extrusions, custom designed framing members or the added step
of applying adhesive to the spacers in the field or shop. Installation
is fast and easy.
WARRANTY
Limited Warranty: For a period of
six months from the date of first sale, Saint-Gobain Performance Plastics
Corporation warrant this product to be free from defects in materials and
workmanship. Our only obligation will be to replace any portion proving
defective, or at our option, to refund the purchase price thereof. User
assumes all other risk, if any, including the risk of injury, loss or damage
direct or consequential, arising out of the use, misuse, or inability to
use, this product. THIS WARRANTY IS IN LIEU OF THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR PARTICULAR PURPOSE, AND ALL OTHER WARRANTIES, EXPRESSED OR
IMPLIED.
No deviation is authorized.
Roll Sizes
Thickness Length
1/8" 50' per Roll
3/16" 50' per Roll
1/4" 50' per Roll
3/8" 25' per Roll
1/2" 20' per Roll
TECHNICAL SERVICES
All materials used in a structural silicone
project must be tested for compatibility by the silicone manufacturer before
installation. Saint-Gobain will provide complete technical information
and materials for testing upon request. Laboratory facilities and Application
Engineering representatives are available to assist customers, call toll-free
(800) 724-0883.
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