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Our Partner 
VerraShield Working with VENT Systems for Complete Moisture Management

VENT Systems is a leader in providing products and solutions compliant with National Construction Code (NCC) requirements.

VENT has been New Zealand’s leading specialist in the supply of passive ventilation systems and products for over 15 years and is now here in Australia as VENT Systems. VENT Systems are industry leaders in passive ventilation and condensation management in the non-habitable areas of the building envelope, offering NCC Compliant and above Compliant solutions.

Ventilation Systems for NCC2022

VerraShield VapourTek Roof Membranes

Metal Traditional Roof <10°

The National Construction Code 2022 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 for a Traditional Pitched Roof <10° requirement mandates “25,000mm²/lm per linear metre at opposing ends of the roof.”

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VerraShield VapourTek Roof Membranes

Metal Traditional Mono-Pitched Roof <10°

The National Construction Code 2022 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 for a Traditional Mono-Pitched Roof <10° requirement mandates “25,000mm²/lm at opposing ends of the roof.”

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Metal Traditional Pitched Roof ≥10° – 15°

Metal Traditional Pitched Roof ≥10° – 15°

The National Construction Code 2022 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 for a Traditional Pitched Roof <10° requirement mandates “25,000mm²/lm at the eaves and 5,000mm² at high level.”

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Metal Traditional Mono-Pitched Roof ≥10° – 15°

Metal Traditional Mono-Pitched Roof ≥10° – 15°

The National Construction Code 2022 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 for a Traditional Mono-Pitched Roof <10° requirement mandates “25,000mm²/lm at the eaves and 5,000mm² at high level.”

Learn more
Metal Traditional Pitched Roof ≥15° – 75°

Metal Traditional Pitched Roof ≥15° – 75°

The National Construction Code 2022 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 for a Traditional Pitched Roof ≥15° – 75° requirement mandates “7,000mm²/lm at the eaves and 5,000mm² at high level.”

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VerraShield VapourTek Roof Membranes

Metal Traditional Mono-Pitched Roof ≥15° – 75°

The National Construction Code 2022 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 for a Traditional Mono-Pitched Roof ≥15° – 75° requirement mandates “7,000mm²/lm at the eaves and 5,000mm² at high level.”

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Concrete Tile Traditional Pitched Roof ≥15°

Concrete Tile Traditional Pitched Roof ≥15°

The National Construction Code 2022 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 for a Traditional Pitched Roof ≥15°-75° requirement mandates “7,000mm²/lm at the eaves and 5,000mm² at high level.”

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Colourbond-Cathedral-Pitched-Roof-above-10-degrees

Metal Cathedral Pitched Roof ≥10°

The National Construction Code 2022 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 for a Cathedral Pitched Roof ≥ 10° requirement mandates “7,000mm²/lm at the eaves and 5,000mm² at high level, plus an additional 18,000mm²/m at the eaves if the roof has a cathedral ceiling.”

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VerraShield VapourTek Roof Membranes

Metal Cathedral Mono-Pitched Roof ≥10°

The National Construction Code 2022 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 for a Cathedral Mono-Pitched Roof ≥ 10° requirement mandates “7,000mm²/lm at the eaves and 5,000mm² at high level, plus an additional 18,000mm²/m at the eaves if the roof has a cathedral ceiling. ”

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Ventilation Systems for NCC2025

VerraShield VapourTek Roof Membranes

Metal Traditional Roof <10°

The National Construction Code 2022 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 for a Traditional Pitched Roof <10° requirement mandates “20,000mm²/lm per linear metre at opposing ends of the roof.”

Learn more
VerraShield VapourTek Roof Membranes

Metal Traditional Roof 10° to 75°​

All VENT Systems technical advice presents BEYOND COMPLIANCE of the National Construction Code 2025 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 to ensure mitigation of the risks associated with internal moisture in the roof cavity.

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Tiled Traditional Roof >15° – 75°​

Tiled Traditional Roof >15° – 75°​

All VENT Systems technical advice presents BEYOND COMPLIANCE of the NationalConstruction Code 2025 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 to ensure mitigation of the risks associated with internal moisture in the roof cavity.

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Metal Traditional Mono-Pitched Roof ≥10° – 15°

Metal Cathedral Roof >10°​

The National Construction Code 2022 Vol 1: F8D5 / ABCB Housing Provisions Standard 10.8.3 for a Traditional Mono-Pitched Roof <10° requirement mandates “20,000mm²/lm at the eaves and 5,000mm² at high level.”

Learn more

Vent Calculator

Calculate ridge, facia and barge/parapet vents for your roof