Double Face Glass Sealing Tape
- Material: High-density PVC foam core, 280-350 kg/m3 typical reference
- Adhesive: Double-sided acrylic pressure-sensitive adhesive
- Color: Black foam with blue or clear release liner
- Common Thickness: 3 mm, 4 mm, 6 mm, 8 mm, 9.5 mm
- Common Width: 6 mm-25 mm, custom slit rolls available
- Typical Use: Structural glazing joint spacing before sealant cure
Two Face Tape Company is a manufacturer of Double Sided PVC Structural Spacer Tape for structural glazing assemblies where joint thickness must stay controlled before silicone or structural sealant cures. The tape combines a high-density PVC foam core with double-sided adhesive to hold glass-to-frame spacing during positioning, clamping, and early curing. It is made for curtain wall, facade, and cladding glazing work where compression recovery, clean liner removal, and sealant compatibility checks are part of the assembly process.
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Product Overview
Double Sided PVC Structural Spacer Tape is used as a controlled spacing layer between glass panels and aluminum, coated metal, stainless steel, or curtain wall framing before the structural silicone develops handling strength. It is not an ordinary glass sealing tape, household window foam strip, or gasket replacement. Its value is in keeping the designed joint geometry stable while the sealant system is applied and cured.
The high-density PVC foam core helps prevent the glass from closing the joint too tightly during placement. In reference sample checks, a 6 mm tape can typically hold the spacing within about +/-0.3 mm after hand pressure and fixture contact, depending on frame flatness, coating type, and applied load. This is important because a joint that becomes too thin may reduce sealant depth, while an uneven joint can lead to inconsistent sealant contact.
The double-sided adhesive keeps the spacer in position during shop-glazed panel preparation or facade installation work. Before repeated glazing assembly, the tape should be checked with the selected structural sealant, actual glass surface, aluminum finish, cleaning method, and designed joint width. A 24-72 hour sample observation can help confirm edge lifting, adhesive transfer, liner release, and spacing stability. The tape supports positioning before cure; the final structural performance must come from the specified silicone or structural sealant system.
Benefits
- Maintains designed joint thickness before structural silicone curing.
- Supports stable glass-to-frame spacing under fixture pressure.
- High-density PVC foam offers typical compression recovery of >=80% after short-term compression release.
- Double-sided adhesive helps reduce spacer movement during glass placement and panel handling.
- Blue or clear liner removes cleanly without stretching narrow slit strips when handled correctly.
- Custom slit widths help match curtain wall, facade, and cladding glazing joint designs.
- Works as a spacing and positioning aid, not as the final structural load-carrying material.
How does the tape control joint gap before sealant curing?
Double Sided PVC Structural Spacer Tape controls the joint by working as a temporary spacing element between the glass and frame. The PVC foam core resists excessive compression, while the adhesive keeps the strip in the planned position before sealant application and cure. In curtain wall structural glazing, this helps prevent the glass from pressing too close to the frame during positioning. A practical check should measure the joint after glass placement, fixture pressure, and 24-hour dwell to confirm that the designed sealant depth is still available
Product Production
TDS
Item Typical Value Product Type Double sided PVC structural glazing spacer tape Foam Core High-density PVC foam Adhesive Type Double-sided acrylic pressure-sensitive adhesive Foam Density 280-350 kg/m3 typical reference Standard Color Black foam Release Liner Blue PE liner or clear film liner Thickness Range 3 mm, 4 mm, 6 mm, 8 mm, 9.5 mm, custom available Thickness Tolerance +/-0.3 mm typical depending on thickness Width Range 6 mm-25 mm standard, custom slitting available Width Tolerance +/-0.5 mm typical for slit rolls Roll Length 10 m, 15 m, 20 m, or project roll length 180 Degree Peel Adhesion 8-14 N/25 mm typical on cleaned aluminum Compression Recovery >=80% typical after short-term compression release Application Temperature 10 C-45 C recommended Service Temperature -20 C-90 C typical reference Joint Gap Function Helps control glass-to-frame spacing before sealant cure Structural Role Temporary support and spacing aid, not final structural load carrier Sealant Compatibility Sample testing required with actual silicone or structural sealant Substrate Check Glass, aluminum, coated metal, stainless steel, cladding frame Sample Observation Check liner release, edge lifting, adhesive transfer, and sealant contact after 24-72 hours
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Applications
- Curtain wall structural glazing joint spacing
- Facade glass-to-aluminum frame assembly
- Cladding glazing systems before sealant cure
- Shop-glazed glass panel preparation
- Two-sided or four-sided structural glazing systems
- Temporary positioning before silicone or structural sealant reaches handling strength
- Commercial window wall and architectural glass framing
- Projects requiring consistent sealant depth and controlled joint width
What should be tested before using PVC structural spacer tape with structural sealants?
Before repeated glazing assembly, the tape should be tested with the same glass, frame finish, cleaning process, and structural sealant planned for the project. Key checks include sealant color change, adhesion loss, adhesive migration, foam edge interaction, liner removal behavior, and compression recovery after fixture pressure. A small assembly trial is more useful than tape data alone, because coating type, surface dust, solvent cleaning, temperature, humidity, and joint width can all affect glazing results. For narrow strips, stretching during liner removal and edge stability after 72 hours should also be reviewed.
FAQ
Is Double Sided PVC Structural Spacer Tape a structural bonding tape?
No. It is a spacer and temporary support tape. The final structural performance must come from the designed structural silicone or sealant system.
Can the thickness be customized for different glazing joints?
Yes. Common thicknesses include 3 mm, 4 mm, 6 mm, 8 mm, and 9.5 mm, with custom options depending on joint design.
Does the tape need sealant compatibility testing?
Yes. It should be tested with the actual glass, frame coating, cleaning method, and structural sealant before repeated assembly.
Where is this tape mainly used?
It is mainly used in curtain wall, facade, cladding glazing, and commercial structural glass assemblies that require controlled joint spacing before sealant curing.
