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840 LAYING PRECAST CONCRETE PAVING SLABS
• Condition of substrate: Clean.
• Setting out: Minimize cutting.
• Joints: Open.
- Width: 3 mm .
- Perimeter/ Upstand margins: site specific mm wide, stone ballast filled.
• Completion: Slabs must be level and stable.

870 APPLYING CHIPPINGS
• Condition of substrate: Clean.
• Gravel guards: Fit to outlets.
• Dressing compound: Hot or cold application. Evenly pour at
• 1.5 kg/m².
• Chippings application (approximately): 16 kg/m².
• Completion: Remove loose excess chippings without exposing dressing compound.

874 APPLYING SOLAR REFLECTIVE PAINTS
• Application: manufacturers recomendation.
• Surface coverage: Even and full.
• Coats: Fully adhered.

COMPLETION

910 INSPECTION
• Interim and final roof inspections: Submit reports.

920 ELECTRONIC ROOF INTEGRITY TEST
• Testing authority: The roofing contractor.
• Timing of test: Give notice.
• Condition of roof prior to testing:
- Complete to a stage where integrity can be tested.
- Surface: Clean.
• Test results and warranty: Submit on completion of testing.

940 COMPLETION
• Roof areas: Clean.
• Outlets: Clear.
• Work necessary to provide a weathertight finish: Complete.
• Storage of materials on finished surface: Not permitted.
• Completed membrane: Do not damage. Protect from chemicals, traffic and
adjacent or high level working.

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