Description

Everguard and Everguard Extreme TPO Roof and Deck Membranes are synthetic, single-ply waterproofing membranes for use on nominally flat and low-pitch roofs and decks on buildings within the limitations of this Product Certificate. 

Everguard and Everguard Extreme TPO Roof and Deck Membranes are single-ply, polyester fabric reinforced, thermoplastic polyolefin (TPO) fully bonded waterproofing sheet membranes for roofs and decks.

Everguard is a standard membrane and Everguard Extreme has increased ultraviolet (UV) inhibitors, and both are available in white or grey. Rolls are wrapped in plastic printed with the GAF mark and Everguard TPO. Each roll has a sticker attached which gives the product, factory and colour codes. A manufacturing batch number is also printed on the top edge of the membrane. Packaging or containers identify other components and materials.

Scope

Everguard and Everguard Extreme TPO Roof and Deck Membranes are suitable for use as roof and deck waterproofing membranes on buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; or,
• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regard to building height and floor plan area when subject to specific structural design; and,
• with substrates of plywood, Strandsarking (roofs only), cross-laminated timber (CLT) or suspended concrete slab; and,
• with minimum falls for plywood, CLT and Strandsarking roofs of 1:30, suspended concrete slab of 1:60 and decks of 1:40; and,
• with deck size limited to 40 m²; and,
• situated in NZS 3604 Wind Zones up to, and including, Extra High.

Everguard and Everguard Extreme TPO Roof and Deck Membranes are suitable for use as roof and deck waterproofing membranes on buildings within the following scope:

• subject to specific structural and weathertightness design; and,
• with substrates of plywood or suspended concrete slab; 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.

Roofs and decks waterproofed with Everguard and Everguard Extreme TPO Roof and Deck Membranes must be designed and constructed in accordance with the following limitations:

• nominally flat roofs and decks and pitched roofs 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; and,
• with the deck membranes continually protected from physical damage by a pedestal protection system.

The design and construction of the substate and movement and control joints are specific to each building and therefore is the responsibility of the building designer and building contractor and is outside the scope of this Product Certificate.