Technical Statement
Product Description
Manual opening skylight for roof pitches between 0 and 60 degrees
Scope of use
For use on roof pitches 0-60 degrees. (It is recommended for
roof pitches below 5 degrees for the skylight to be pitched to 5 degrees
minimum to ensure an improved water runoff and to limited ponding on the glass)
VCM skylights are not fire rated but can be used under New Zealand
Building Code C/AS2 Part 5 in Risk Group SH buildings
VCM skylights have been tested for impact, but cannot be regarded as part of a trafficable roof surface.
New Zealand Building Code (NZBC)
The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:
- Clause B2 Durability: Performance B2.3.1, B2.3.2
Product is CodeMark Certified. (BRANZ CM-1008)
- Clause E2 External moisture: Performance E2.3.1, E2.3.2, E2.3.7
Product is CodeMark Certified. (BRANZ CM-1008)
- Clause G4 Ventilation: Performance G4.3.1, G4.3.3
Product is CodeMark Certified. (BRANZ CM-1008)
- Clause G7 Natural light: Performance G7.3.1, G7.3.2
Product is CodeMark Certified. (BRANZ CM-1008)
- Clause H1 Energy efficiency : Performance H1.3.1, H1.3.2E, H1.3.3
Product is CodeMark Certified. (BRANZ CM-1008)
Evidence
The product meets the requirements set out in the following documents, or relevant parts of cited standards within the documents:
- B2/AS1 Durability - AS 4285 - VELUX Skylights satisfy the durability requirements specified for Non-structural Roof Cladding elements and External Window/Door Joinery.VELUX Skylights have passed tests for weather tightness, concentrated load, non-cyclonic and cyclonic wind pressures according to Australian Skylight Standard AS4285 test methods.
- E2 External Moisture - AS 4285 - VELUX Skylights have passed tests for weather tightness, concentrated load, non-cyclonic and cyclonic wind pressures according to Australian Skylight Standard AS4285 test methods.
- F2 Hazardous Building Materials - NZS 4233: Part 4, AS/NZS 4666 - VELUX Skylights comply with requirements for sloped Insulating Glass Units.
- G4/AS1 Natural Ventilation (1.2, 2.1) - VELUX Opening Skylights can be used to meet the G4 Natural Ventilation requirements.
- G7 Natural Light - VELUX Skylights can be used to meet the G7 Natural Light requirements.
- H1 Energy Efficiency - NZS 4218 - VELUX Skylights exceed the minimum R-value requirements for skylights in all climate zones.
- Evidence: 30+ years of historical use in New Zealand
Supporting evidence
The product has and can make available the following additional evidence to support the above statements:
Product Criteria
Design requirements
VCM skylights are modular manually operated venting skylights intended
for roof pitches between 0 and 60 degrees. They are available in standard sizes
only. The IGU glazing unit has argon gas fill and Low E3 applied to the inside
surface of the outer pane. The IGU unit meets the requirements of NZBC F2
VCM skyloights come fitted with insect screen.
For out of reach operation up to 4 metres from floor level use ZCT 300 rod. For in reach operation use ZZZ 212 swivel handle.
VCM
skylights have been tested for impact but are not intended to be part of a
trafficable roof surface.
VCM
skylights do not have a fire rating.
Installation requirements
Install VCM skylight in accordance with manufacturer’s
installation instructions, supplied with VCM, and with local building code
requirements.
Align
skylight with curb, free of warp or twist, maintaining dimensional tolerances.
Attach skylight to curb with screws furnished by manufacturer. Coordinate
attachment and seal of perimeter air and vapor barrier material. Provide
insulation of the curb for maximum energy efficiency. Install site
made flashing in accordance with latest version of New Zealand Roofing Code of Practice to achieve weather- tight installation.
Maintenance requirements
For maintenance requirements refer to http://https//www.velux.co.nz/service-and-warranty/maintenance.
Exterior
surfaces must be cleaned with clean water at least once a year, subject to the
environmental conditions present.
