In this episode, we unpack the role of roof underlays - the hidden layer that plays a vital role in protecting your building.

We discuss how underlays manage condensation, act as a secondary moisture barrier, and contribute to the long-term performance of your roof. The conversation also covers the Masons Roof Underlay range, including VHP Value, Strong, Ultra and Maxi, plus White Face Foil, and the key differences between breathable and non-breathable systems.

We also break down CodeMark certification and what it means for meeting New Zealand Building Code requirements.

A practical listen for builders, roofers and designers looking to better understand roof systems and product selection.

About Masons:

Masons began over 20 years ago, founded by Trent Mason, from a family of bricklayers, and has grown into a building-envelope focused company developing practical systems and products for building and construction in New Zealand and Australia.

To learn more about Masons go to https://mpb.co.nz

Roof ventilation plays an important role in protecting buildings from moisture and condensation in roof spaces.

In this episode of The Masons Podcast, Michelle is joined by Masons Technical Manager Arthur Whitfield to explore the role of roof ventilation in modern construction and to discuss the Masons Passive Roof Ventilation System.

As buildings become more airtight, moisture can accumulate in roof cavities and increase the risk of condensation. Arthur explains how passive roof ventilation works and how the Masons Passive Roof Ventilation System uses natural airflow to help remove moisture-laden air from roof spaces.

The conversation also covers common sources of moisture inside homes, how ventilation supports insulation performance, and why more designers are incorporating passive roof ventilation into their building envelope strategies.

Practical, educational and grounded in building science, this episode provides useful insights for builders, architects and designers interested in creating healthier, more durable buildings.

About Masons:

Masons began over 20 years ago, founded by Trent Mason, from a family of bricklayers, and has grown into a building-envelope focused company developing practical systems and products for building and construction in New Zealand and Australia.

Learn more about Masons products: https://mpb.co.nz

Condensation in roof spaces is becoming more common as homes become warmer and more airtight. In this episode, we discuss why it happens and what can be done to manage it.

Arthur Whitfield, Technical Manager at Masons, explains how moisture enters roof spaces, why long-run roofs are more susceptible, and the key steps designers and builders can take to reduce condensation risk.

We also cover ventilation, airtightness, and the difference between cold and warm roof design.

A practical conversation for builders, designers, and anyone interested in better building performance.

About Masons:

Masons began over 20 years ago, founded by Trent Mason, from a family of bricklayers, and has grown into a building-envelope focused company developing practical systems and products for building and construction in New Zealand and Australia.

Learn more about Masons: https://mpb.co.nz