Sarnafil® Roof and Deck Membrane Systems

Abbreviation
Appraisal number 619 (2020)
Amendment
18/06/2021
Valid from
9/11/2020

Information provider
BRANZ Limited
Information type
BRANZ Appraisal
Format
PDF

Description

Sarnafil® Roof and Deck Membrane Systems are glass fibre reinforced PVC membranes for waterproofing roofs and decks.

Scope

Sarnafil® Roof and Deck Membrane System has been appraised as a roof and deck waterproofing membrane on buildings within the following scope:

  • the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; or,
  • the scope of limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regards to building height and floor plan area when subject to specific structural design; and,
  • with substrates of plywood or suspended concrete slab; and,
  • with minimum falls for roofs of 1:30 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.

Sarnafil® Roof and Deck Membrane System has also been appraised as a roof and deck waterproofing membrane 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 the Sarnafil® Roof and Deck Membrane System must be designed and constructed in accordance with the following limitations:

  • decks and nominally flat or 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 downpipe direct discharge to the deck; and,
  • with the deck membranes continually protected from physical damage by a pedestal protection system.

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

The membrane must be installed by Sika (NZ) Ltd approved applicators.

For assistance with locating previous versions, please contact the information provider.
Notes/comments

This Appraisal replaces BRANZ Appraisal No. 619 (2015).

View on Information Provider website Download this resource (PDF, 523KB)
For assistance with locating previous versions, please contact the information provider.

This Appraisal replaces BRANZ Appraisal No. 619 (2015).

This resource is not cited by any other resources.

Sarnafil® Roof and Deck Membrane Systems

This document is not CITED BY any other resources:

Sarnafil® Roof and Deck Membrane Systems

Description

Sarnafil® Roof and Deck Membrane Systems are glass fibre reinforced PVC membranes for waterproofing roofs and decks.

View on Information Provider website Download this resource (PDF, 523KB)
Sarnafil® Roof and Deck Membrane Systems
Description

Sarnafil® Roof and Deck Membrane Systems are glass fibre reinforced PVC membranes for waterproofing roofs and decks.

View on Information Provider website Download this resource (PDF, 523KB)
This resource does not cite any other resources.

Sarnafil® Roof and Deck Membrane Systems

This resource does not CITE any other resources.
Feedback