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M21 Insulation with rendered finish

GENERAL/ SYSTEM REQUIREMENTS

120 SURVEY OF STRUCTURAL SUBSTRATE
• Timing: Before starting work covered in this section.
• Objective: To confirm suitability for application of external wall insulation system.
• Survey report: Submit, covering:
- The form and condition of the structural substrate.
- A schedule of repairs and/ or additional works necessary to render the substrate
suitable to receive the system.
- A schedule of services, fixtures and fittings requiring removal to facilitate
installation of the system.
- Proposals for treatment of cold bridges that may occur as a result of installing the
system, e.g. at door and window reveals, concrete floor edges, movement joints.
- Any other relevant information.

180 STRUCTURAL SUBSTRATE
• Description: site specific.
• Preparation: site specific.

210 EXTERNAL WALL INSULATION SYSTEM
• Manufacturer: Contractor's choice.
- System reference: site specific.
• Insulation: site specific.
- Thickness: site specific.
- Density: site specific.
- Minimum compressive strength: site specific.
- Method of fixing: Submit proposals.
• Recycled content: Submit proposals.
• Beads/ Trims:
- Aluminium starter tracks;
- Stainless steel bell casts;
- Aluminium drainage Strips; and
- Stainless steel undersills with end caps.
• Render carrier/ Reinforcement: Galvanized steel mesh.
- Method of fixing: Expanding mechanical fixings.
• Render: Polymer cement finish coat, on adhesive basecoat.
• Decorative finish: site specific.

310 DESIGN
• Detailed design of system and associated features shown on drawings: Complete
to meet requirements of this specification.

320 INTEGRITY
• Installation requirements:
- Weathertight under all anticipated conditions.
- Capable of resisting all dead loads and design live loads, including impact and
wind loads, and accommodating all thermal movements without damage.

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