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P10 Sundry insulation/ proofing work

SUNDRY INSULATION/ PROOFING WORK

TYPES OF INSULATION

110 EAVES ROOF VENTILATORS FOR EXISTING ROOFS
• Manufacturer: Contractor's choice.
- Product reference: submit proposals.
• Eaves free air space (minimum): As recommended in BRE Report 262.

125 INSULATION LAID BETWEEN CEILING TIES/ JOISTS
• Manufacturer: Contractor's choice.
- Product reference: submit proposals.
• Material: Rock wool to BS EN 13162.
• Recycled content: Submit proposals.
• Thickness: site specific.
• Installation requirements:
- Installation standard: To BS 5803-5.
- Joints: Butted, no gaps.
- Insulation at perimeter: Carried over wall plates.
- Eaves ventilation: Unobstructed.
- Service holes: Sealed, and debris removed before laying insulation.
- Water cistern platforms: Not applicable.

135 INSULATION LAID ACROSS CEILING TIES/ JOISTS
• Manufacturer: Contractor's choice.
- Product reference: submit proposals.
• Material: Rock wool to BS EN 13162.
• Recycled content: Submit proposals.
• Thickness: site specific.
• Installation requirements:
- Installation standard: To BS 5803-5.
- Insulation widths: Widest practical.
- Laid direction: At right angles to ties/ joists.
- Joints: Butted, no gaps.
- Insulation: Fitted neatly around rafter ends and extended over wall plates.
- Eaves ventilation: Unobstructed.
- Service holes: Sealed, debris removed before laying insulation.
- Water cistern platforms: Not applicable.

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