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WORKMANSHIP

310 WORKMANSHIP GENERALLY
• Condition of substrate:
- Clean and even textured, free from voids and sharp protrusions.
- Moisture content: Compatible with damp proofing/ tanking.
• Air and surface temperature: Do not apply sheets if below minimum
recommended by membrane manufacturer.
• Condition of membrane at completion:
- Neat, smooth and fully supported, dressed well into abutments and around
intrusions.
- Completely impervious and continuous.
- Undamaged. Prevent puncturing during following work.
• Permanent overlying construction: Cover membrane as soon as possible.

335 PRIMERS
• Manufacturer: Contractor's choice .
- Product reference: site specific .
• Coverage per coat (minimum): As recommended for the purpose by membrane
manufacturer .
• Curing: Allow to dry thoroughly before covering.

340 HOT APPLIED BONDING COMPOUNDS
• Type: Oxidized bitumen to BS 3690-2.
- Grade: As recommended by membrane manufacturer for the conditions and
type of surface .
• Application: Continuous even coating to provide full bonding over whole surface.
Do not overheat.

345 COLD APPLIED BONDING COMPOUNDS
• Type and application: As recommended for the purpose by the membrane
manufacturer.

350 ANGLES IN BONDED DAMP PROOFING/ TANKING
• Preformed rot proof fillet to internal angles:
- Size (minimum): 50 x 50 mm, splay faced.
- Bedding: Bitumen mastic or bonding compound.
• Reinforcing strip to all angles:
- Material: As damp proofing/ tanking.
- Width (minimum): 300 mm.
- Timing: Apply before main sheeting.
• Dressing of main sheeting onto adjacent surfaces (minimum): 100 mm.

360 JUNCTIONS WITH PROJECTING DPCS/ CAVITY TRAYS
• Adjoining surfaces: Clean and dry.
• Dpcs/ Cavity trays: Lap and fully bond/ seal with sheeting.
- Laps (minimum): 150 mm.
- Bonding/ Sealing: site specific.

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