Cor-Vent® Roof Ventilation Device

Cor-Vent® is a low-level passive Roof Ventilation device adhering to NCC2022 ABCB housing Provision Part 10.8.3 & Vol1 F8D5 requirements. Designed to allow passive airflow over fascia and pliable membrane (sarking) or flashing to reduce the risk of moisture and condensation in the roof attic.

Cor-Vent® Standard Pitch – 15°~75° Pitch Roofs – Steel

Compliance & Installation PDF

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Cor-Vent® Standard Pitch – 15°~75° Pitch Roofs – Tiles

Compliance & Installation PDF

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NEW Cor-Vent® Low Pitch – 0°~15° Pitch Roofs – Steel

Compliance & Installation PDF

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Overview

What is Cor-Vent®?

Cor-Vent® is a passive Roof Ventilation device with compliance to Code NCC2022 ABCB housing Provision Part 10.8.3 & Vol1 F8D5 requirements. Designed to allow passive airflow over fascia and pliable membrane (sarking) or flashing to reduce the risk of moisture and condensation in the roof attic.

Cor-Vent® Range

We offer Cor-Vent® products that cater to various roof pitches from 0°~75°.

Design

Cor-Vent® products are made from Australian made fluted polypropylene board (Corflute®); a robust substrate perfectly suited to roof ventilation requirements.

The Cor-Vent® 8K and 5K products include a 45° cut on both open ends (flute openings). Cor-Vent® 25K product has a 90° cut on both ends. The open ‘flutes’ improves airflow and helps avoid possible blockage from overlapped sarking.

Installation

Cor-Vent® product installations do not require any special tools, training, or major changes to the roof build. Cor-Vent® Installation Guides are included in the Product Information Download Forms above.

Certification

Cor-Vent® meets the DTS airflow opening requirements per NC2022, including BAL Zones.

Contact our Cor-Vent® specialists for additional information at building@corex.com.au or download Cor-Vent® Order Form below.

Image: Cor-Vent® 8K FR BAL 200. For standard pitch roofs – 15°~75°. Cor-Vent® is Australian designed and made locally from Corflute®. Patent pending: 541217AU

NCC Compliance Code

Updated roof space ventilation requirements

Cor-Vent® satisfies Compliance Code NCC2022 ABCB housing Provision Part 10.8.3 & Vol1 F8D5 requirements.

  1. Minimum 20 mm gap maintained between insulation and sarking.
  2. Eave ventilation opening in accordance with Table 10.8.3.
Roof pitch Ventilation openings
< 10° 25,000 mm2/m provided at each of two opposing ends
≥ 10° and < 15° 25,000 mm2/m provided at the eaves and 5,000 mm2/m at high level
≥ 15° and < 75° 7,000 mm2/m provided at the eaves and 5,000 mm2/m at high level, plus an additional 18,000 mm2/m at the eaves if the roof has a cathedral ceiling

Cor-Vent® Features

General features of the Cor-Vent® range

  • Applies to ventilation requirements for climate zones 6, 7 and 8
  • Designed for roof pitch from 0° to 75°
  • Light weight and engineered from Corflute®
  • Made from recyclable polypropylene (PP)
  • Easy to install and offered in 2.5-meter lengths
  • Can be screwed or bonded to battens or rafters

Flame Retardant variant

  • FR grade to AS1530.3 **

Image: Cor-Vent® Standard 8K 200 for pitch roofs 15°~75°.

Cor-Vent® Technical Data

Criteria Test Method Value
Compression strength AS1301.429S Min 600 KPA
Melting temperature ASTM3418 165ºC
Maximum working temperature 90ºC
Spread of Flame Index (range 1-10) ** AS1530.3 0
Smoke developed index (range 1-10)** AS1530.3 3
Heat evolved index (range 1-10)** AS1530.3 0
Ember protection ** AS3959 2mm aperture aluminium wire mesh

15°~75° Pitch Products

Cor-Vent® Standard Pitch. 15°~75° Pitch Roofs – Steel

Roof pitch Ventilation openings
≥15° to ˂75° Exceeds 7000 mm²/m provided at the eaves and 5,000mm²/m at the high level.
Product Thickness (mm) Width (mm) Length (mm) Weight (kg) Ventilation minimum Free open area (mm²/m)
Cor-Vent 8K 200 10 200 2500 0.9 8050
Cor-Vent 8K 250 10 250 2500 1.1 8050
Cor-Vent 8K FR BAL 200 10 200 2500 1.0 8050
Cor-Vent 8K FR BAL 250 10 250 2500 1,2 8050
Cor-Vent 5K (high level) 6 100 2500 0.3 5050
  • Cor-Vent 8K meets DTS 7000mm²/m installed along the two longest horizontals calculation based on the longest planned dimension of the roof.
  • Cor-Vent 5K meets DTS 5000mm²/m installed on one side (high level) but typical to install on both sides.

Image: Cor-Vent 8K – Hip Roof. Installed with sarking & clips

Image: Cor-Vent 8K – Hip Roof – Cladding installation

0°~15° Pitch Products

Cor-Vent® Low Pitch. 0°~15° Pitch Roofs – Steel

Roof pitch Ventilation openings
≥0° to ˂15° Exceeds 25000 mm²/m along the longest building length
Product Thickness (mm) Width (mm) Length (mm) Weight (kg) Ventilation minimum Free open area (mm²/m)
Cor-Vent 25K 100 31 100 2500 1.4 25,000
Cor-Vent 25K 120 31 120 2500 1.8 25,000
Cor-Vent 25K FR 100 31 100 2500 1.4 25,000
Cor-Vent 25K FR 120 31 100 2500 1.8 25,000
Cor-Vent 25K FR BAL 100 31 100 1200 1.6 25,000
Cor-Vent 25K FR BAL 120 31 120 1200 1.6 25,000
Cor-Vent 5K (high level) 6 100 2500 0.3 5,050
Cor-Vent 10mm Packer 10 50 2500 0.25 N/A
  • Cor-Vent 25K meets DTS 25000mm²/m installed along the longest building length and opposite ends for skillion roof < 10°.
  • Cor-Vent 25K meets DTS 25000mm²/m installed along the longest length on low level in conjunction with Cor-Vent 5K on high level for roof pitch < 10°~15°.

Image: Cor-Vent® 25K– Standard version with 10mm packer.

Image: Cor-Vent® 25K FR-BAL

Cor-Vent®

Get in touch!

Contact our Cor-Vent® specialists for additional information. Email building@corex.com.au

Cor-Vent® Installation Guides can be found in the Product Information Download Forms at the top of this page.

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