Page 337 - McD_6118-AEW-XX-XX-NBS-A-001_Neat

370 INFILL UNITS to match existing
• Manufacturer: site specific.
- Product reference: site specific.
• Material: site specific.
• Recycled content: site specific.
• Size: site specific.
• Edge profile: site specific.
• Finish: site specific.
- Colour: site specific.

EXECUTION

610 PREPARATION
• Documentation: Obtain available documentation of the existing ceiling system
and services, including record drawings and maintenance manual. Check on site.
• Discrepancies: Give notice.

620 EXECUTION GENERALLY
• Workmanship: In accordance with BS EN 13964 Annex A.
• Designated ceiling system components: Remove carefully without affecting
surrounding areas.
• Disposal of removed components: Remove from site.
• Retained components: Do not distort or damage retained components.
• Reuse of ceiling system components:
- Condition: Undamaged, free from distortion, clean.
- Units and boards: Match adjacent areas where appropriate.
• Cutting units, boards and components: Cut neatly and accurately. Maintain edge
profiles.
- Openings: Suit sizes and edge details of fittings.

650 SETTING OUT
• General: Maintain ceiling system accurately, continuous, even, and jointed at
regular intervals. Provide level soffits free from undulations, lipping and distortions in
grid members.
• Infill units, access units, integrated services: Fit and align correctly.
• Minimum size for edge and perimeter infill units half standard width or length where
practicable.
• Grid: Position to suit infill unit sizes. Allow for permitted deviations from nominal sizes.
• Infill joints and exposed suspension members: Straight, aligned and parallel to walls
or setting out lines. Where building elements and features to which the ceiling
system relates are not square, straight or level, give notice.

675 INSTALLING PERIMETER TRIMS
• Jointing: Neat and accurate, without lipping or twisting.
- External and internal corners: Mitre joints.
- Intermediate butt joints: Minimize. Use longest available lengths of trim. Align
adjacent lengths, with matching joints.
• Fixing: Fix firmly to perimeter wall or other building structure.
- Fixing centres: As existing.
• Finish: Apply before ceiling grid is installed.
- Prime new timber edge battens with undercoat and final coat to visible surfaces.

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