Passive Roof Ventilation System by Masons

Passive Roof Ventilation System

Masons

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Description

Masons Passive Roof Ventilation System is a complete system for ventilating roof cavities in long run metal roofs. Using the natural stack effect and wind movement, this passive system helps remove warm, moist air and introduces cooler, drier air to protect the roof structure, insulation, and ceiling space from moisture-related damage.

The improved weather and air tightness of modern roof cladding and flashings contribute to warm, dry and healthy homes. But, the reduced airflow in the roof attic space can create a hidden problem – excess moisture and condensation in the roof space.

Without adequate ventilation, moisture builds up, creating the perfect conditions for mould growth. Good roof space ventilation is crucial in preventing this.

Masons Roof Ventilation System includes:

ROOF VENTS to let warm air escape
VENTILATED ROOF BATTENS to create airflow under the roofing
INSUL-BAFFLE to preserve a clear air path near the eaves

Key Features

Passive system for ventilating the roof space without using mechanical fans
Removes warm, moist air and introduces cooler, drier air
Protects the roof structure, insulation, and ceiling space from moisture-related damage.

Ranges

Masons Building Products Vents, Grilles, & Diffusers

Scope of Use

A passive roofing ventilation system is a method of ventilating the roof space without using mechanical fans. Instead, it relies on natural airflow – using the principles of convection (warm air rising) and wind pressure differences – to allow hot, moist, or stale air to escape while drawing in cooler, fresh air.

Complete system for ventilating roof cavities in long run metal roofs
Can be installed in wind zones up to and including Extra High — NZS3604
Compatible with corrugated or trapezoidal roofs and will suit most profiles

Limitations on Use

Install roof cover within 21 days of installing the Passive Roof Ventilation System
For use on skillion and trussed roofs in accordance with MRM COP and BRANZ guidelines

Statement of Building Code Compliance

When designed, installed, and maintained in accordance with the guidelines outlined in the Design and Installation Guide, MASONS Passive Roof Ventilation system will meet or contribute to meeting the following clauses of the New Zealand Building Code (NZBC):