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640 SEALED INSULATING GLASS UNITS
• Standard: To BS 5713 and/ or BS EN 1279.
• Colour of aluminium perimeter spacers: Black.
• Perimeter seals:
- Resistant to UV light degradation on exposed edges.
- Compatible with structural and weather sealants with which they come into
contact.
• Assembly fixings: Hermetically sealed through or into units.
• Structural integrity: Fabricate units to transfer loads safely from glass panes to
assembly fixings.
• Perimeter taping: Not permitted.

FABRICATION AND INSTALLATION

710 WORKMANSHIP GENERALLY
• Fabrication: Machine cut and drill glass, assembly fixings and assembly supports in
the workshop.

730 STRUCTURAL GLAZING
• Setting out of glass panes and units: Orientate to ensure uniformity of appearance.
• Assembly fixings and assembly support fixings:
- Isolate metal surfaces to prevent direct contact with glass.
- Isolate dissimilar metal surfaces to prevent electrolytic corrosion.
- Tighten to manufacturer's recommended torque figures.

740 SEALANT JOINTS
• Sealant: To BS EN ISO 11600, type G silicone, neutral curing where in contact or
close proximity to other products and finishes that may be adversely affected by
acetoxy curing.
- Class: 25HM.
• Manufacturer: Contractor's choice.
- Product reference: Contractors choice.
• Colour: Black.
• Application: As section Z22.

750 STRUCTURAL SEALANT JOINTSgenerally
• Structural sealant:
- Silicone, neutral curing, designed and manufactured for bonding of structural
sealant glazing.
- Compatible with contact and close proximity products and finishes.
• Manufacturer: Submit proposals.
- Product reference: Contractors choice.
• Colour: Black.
• Application: As section Z22.

760 DOORS
• Base supported doors: Allow for differential movement with suspended structural
glass assemblies.
• Setting out: Provide head, jamb and bottom clearances required by the fittings/
ironmongery manufacturer.
• Fittings and ironmongery: Use matching fasteners supplied by the manufacturer.
• Completion: Check, adjust and lubricate to ensure correct functioning.

RotF generic (intermediate) NBS 2014 6118-AEW-XX-XX-NBS-A-01