Tiled Traditional Roof >15° – 75°
All VENT Systems technical advice presents BEYOND COMPLIANCE of the National Construction Code 2022 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 to ensuremitigation of the risks associated with internal moisture in the roof cavity. BEYOND COMPLIANCE solutions go above and beyond the requirements of the NCC 2022, addressing critical areas such as ensuring unimpeded airflow past insulation. These measures areessential for maintaining optimal conditions within the roof space and minimising thepotential for moisture-related issues.
VENT Systems offers a range of solutions compliant with AS3959, AS4200 as well as NCC2022.
For a Traditional Pitched Roof >15° – 75° NCC2022 requires “7,000mm²/lm at LOW LEVEL and 5,000mm² /lm at High Level.”
FOR COMPLIANCE:
Application at Eaves or Box Gutters: LOW LEVEL VENTILATION
Our G750N Over Fascia Vent 7.5mm guarantees a calculated airflow of 7,500mm²/lm,ensuring compliance effortlessly.
Application at ridge, abutment or parapet : HIGH LEVEL VENTILATION
Our G630 Lap Vent is specifically designed to assure compliance and ease of installation, guaranteeing a calculated airflow of >3,000mm²/vent.
ABOVE COMPLIANCE:
Our G502 Roll Panel Vent compliance with NCC2022 ensuring a 20mm gap above the primary layer of insulation & ensures unimpeded airflow through the eaves.
For bespoke or complex designs there are numerous alternatives that can be considered. Contact our specialist team for further assistance.
DISCLAIMER: Product combinations specified within Vent Systems Pty Ltd (ACN 682 448 997) (Vent Systems) technical documentation are designed to mitigate the risk of moisture accumulation and condensation when installed correctly. Unless otherwise indicated, Vent Systems’ individual products or product combinations generally comply with relevant requirements of the Australian Standards and National Construction Code (NCC). However, compliance with NCC minimum requirements alone may not provide adequate moisture and condensation management per sae. Vent Systems can provide professional and tailored advice as to the suitability, specification and installation of ventilation systems. Except to the extent that we have provided tailored advice, to the fullest extent permitted by law, Vent Systems accepts no liability for losses, damages or defects arising from the specification, installation or performance of its products, and does not guarantee any condensation control, moisture mitigation or overall building performance.
G1200N
Over Fascia Vent
The VENT Over Fascia Vent – G1200N is the most practical and cost-efficient method of ventilating the Eaves of traditional roof pitches ≥ 15°-75°. It is easy to install, discrete and compatible with either timber or Colourbond fascias.
- 11,000mm²/lm of free airflow
- Meets NCC DTS requirements
- Releases hot air from roof voids and manages condensation
- The only solution to ventilate builds with no eaves
- It can be used in isolation or as part of a passive ventilation system
- It can be used to form part of a passive ventilation system that works year-round with no moving parts or energy consumption.
- Easy to install
- Not visible as hidden by spouting/gutter
G630 Lap Vent
The VENT Systems Lap Vent – G630 is designed to release warm air from the roof void using the natural convection of rising warm air.
The G630 can be used in isolation or as part of a propriety ventilation system. It is highly recommended that the G630 is used in conjunction with low-level eaves or over fascia vents.
The G630 is applied to the highest layer of horizontally laid membrane or sarking within 900mm of the high point of the roof to comply with NCC requirements.
- 3,000mm²/unit
- Allows warm moist air to escape the roof cavity
- Perfect for new builds or retrofit
- Is highly recommended to only apply high-level vents with some form of Over Fascia or Eaves ventilation
- Requires no change in ridge capping applications
- No tools or fixing accessories required
- Must be applied to horizontally laid membranes
- Works year-round with no moving parts or energy consumption