Description

Neuchâtel Mastic Asphalt Waterproofing System is a polymer-modified, bitumen mastic asphalt for use as a waterproofing layer on a concrete substrate for roofs, decks, balconies and podiums.

Scope

1. Neuchâtel Mastic Asphalt Waterproofing System has been appraised as a roof, deck, balcony and podium waterproofing system on buildings within the following scope:

• subject to specific structural and weathertightness design; and,
• with substrates of suspended concrete slabs; and,
• situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 6 kPa; and,
• with the weathertightness design of junctions for each specific structure being the responsibility of the building designer.

2. Roofs, decks, balconies and podiums with Neuchâtel Mastic Asphalt Waterproofing System must be designed and constructed in accordance with the following limitations:

• roofs, decks, balconies and podiums constructed to drain water to gutters and drainage outlets complying with the NZBC; and,
• with no steps within the deck level, no integral roof gardens and no downpipes directly discharging to decks.

3. The design and construction of the substrate, movement and control joints is specific to each building, and therefore the responsibility of the building designer and building contractor and is outside the scope of this Appraisal.

4. Neuchâtel Mastic Asphalt Waterproofing System must be installed by Neuchâtel Waterproofing Limited trained installers.