Roof Ventilation Products have been appraised for use as non-structural roof battens and vents for use with pitched and skillion roof construction on buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regards to building height and floor plan area; and,
• with profiled metal roof cladding; and,
• situated in NZS 3604 Wind Zones up to, and including Extra High.

The VENT Vented Batten (VB20) is designed for use on all skillion roof designs irrespective of the roof cladding. It can be used in all climates and weather conditions.

The VENT Vented Batten will fix to the top of the roof purlins, the upper edge of the fascia and underneath the barge flashing, and is compatible with steel and timber purlins.

• Residential skillion roofing and commercial buildings
• Designed to ensure that unimpeded airflow through the roof cavity of a skillion roof design
• Also designed as a purlin vent to allow airflow throughout roof area
• New build or renovation
• VB20 can also be used on walls to create vertical or horizontal ventilation flows

See BRANZ Appraisal 979

Show more

In the opinion of BRANZ, Roof Ventilation Products, if designed, used, installed and maintained in accordance with the statements and conditions of this Appraisal, will meet or contribute to meeting the following provisions of the NZBC:

• Clause B1 STRUCTURE: Performance B1.3.1, B1.3.2 and B1.3.4. Roof Ventilation Products meet the requirements for loads arising from gravity loads, wind and impact [i.e. B1.3.3 (b), (h) and (j)]
• Clause B2 DURABILITY: Performance B2.3.1 (b) 15 years and B2.3.2. Roof Ventilation Products meet these requirements
• Clause E2 EXTERNAL MOISTURE: Performance E2.3.2. Roof Ventilation Products contribute to meeting this requirement
• Clause E3 INTERNAL MOISTURE: Performance E3.3.1. Roof Ventilation Products contribute to meeting this requirement
• Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. Roof Ventilation Products meet this requirement

See BRANZ Appraisal 979 (2023) for full information.

Show more

BRANZ Appraised

• DriStud FRU38 is intended for use on buildings designed in accordance with NZS 3604:2011 paragraph 1.1 and in wind zones up to and including 'Extra High'.
• DriStud FRU38 is designed to be used as a replacement for standard kraft paper roof underlay.
• It can be installed over both timber and steel framing to ensure a dry roof cavity.
• DriStud FRU38 can be used under: masonry tiles, metal tiles, profiled metal roof claddings.

Where CodeMark is to be relied upon, then all conditions of that certificate must be met. These are:

• Must be installed in accordance with the DriStud FRU38 Installation Guide Rev 1.
• DriStud FRU 38 may be installed over timber and steel roof framing.
• The certificate covers the use of DriStud FRU 38 under: masonry tiles, terracotta tiles, metal tiles, profiled metal claddings, slate and composite panels.
• DriStud FRU38 can span up to 1200mm between adjacent supports. Where the span exceeds 1200mm a corrosion resistant mesh or alternative i.e. plastic strapping must be used.

Show more

When specified and installed in accordance with the requirements of the Installation Guide, DriStud FRU 36 roofing underlay will comply with the following provisions of the NZ Building Code:

• Clause B1 Structure: B1.3.1, B1.3.2, B1.3.3 (a, h)
• Clause B2 Durability: B2.3.1(a), B2.3.2(b) (15 years)
• Clause C Protection from Fire: C3.4(c)
• Clause F2 Hazardous Building Materials: F2.3.1

Show more

CodeMark