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ROOFING • GREEN ROOFS
STRUCTURAL WATERPROOFING
SOLAR PV • SINGLE PLY
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AXTER ROOF WATERPROOFING AND INSULATION SPECIFICATION

Supporting deck Existing waterproofing
Application Single layer waterproofing , no insulation
System reference ALPAL 3000 S

Existing waterproofing with no added thermal insulation
Single layer waterproofing

Reinforced bitumen membranes should only be applied over a continuous substrate which provides full support. Substrate Materials used to form the roof deck in flat roofs should be those listed in BS 6229:2003 Flat roofs with continuously supported coverings – Code of practice and conform to the relevant requirements in BS 8217:2005 Reinforced bitumen membranes – Code of practice.

The waterproofing system should conform to the requirements of British Standard 8747:2007 Reinforced Bitumen membranes (RBMs) for roofing – Guide to selection and specification and be installed in accordance with British Standard BS 8217:2005.

Supporting deck Existing membrane or asphalt waterproofing system
Deck preparation Ensure substrate is sound, cut and seal all blisters, remove details. Prime all surfaces with a suitable bituminous primer and allow to dry in accordance with Annex C of British Standard BS 6229:2003.
Waterproofing system Base layer Not required
  Intermediate layer Not required
  Cap sheet ALPAL 3000 S
  SP classification S4P3
Details ALPAL 3000 S
Finishes Self protected system
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