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J41 Reinforced bitumen membrane roof coverings

TYPES OF COVERING

110 BUILT-UP REINFORCED BITUMEN MEMBRANE WARM DECK ROOF COVERINGgenerall
y

• Substrate: site specific.
- Preparation: site specific.

• Vapour control layer: site specific.
• Insulation: site specific.
• Overlay to insulation: Softboard.
• Waterproof covering:

- System manufacturer: Contractor's choice.
- First layer: To BS 8747, class S2P3.

Attachment: Pour and roll bonding.
- Intermediate layer: To BS 8747, class S2P3 where require (site specific).

Attachment: Pour and roll bonding .
- Top layer/ Capsheet: To BS 8747, class S4P4.

Colour: site specific.
Attachment: Pour and roll bonding .
- Flashings and detail work: site specific.
• Surface protection: site specific.
• Accessories: site specific.

130 BUILT-UP REINFORCED BITUMEN MEMBRANE COLD DECK ROOF COVERINGgenerally
• Substrate: site specific.
- Preparation: site specific.
• Waterproof covering:
- System manufacturer: Contractor's choice.
- First layer: To BS 8747, class S2P3.
Attachment: Partial bonding.
- Intermediate layer: To BS 8747, class S2P3.
Attachment: Pour and roll bonding.
- Top layer/ Capsheet: Agrément certified SBS modified bitumen membrane,
polyester reinforced.
Colour: site specific.
Attachment: Pour and roll bonding.
- Flashings and detail work: site specific.
• Surface protection: site specific.
• Accessories: site specific.

PRODUCTS

320 PRIMER
• Type: Bitumen cut back with volatile solvent.
• Characteristics when tested to BS EN 13357:
- Volatile solvent content (minimum): 40% by mass.
- Viscosity (maximum) (STV at 25°C, 4 mm orifice): 10s.

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