Скачать или смотреть 😲Why airtightness matters more than insulation alone in New Zealand homes

😲Why airtightness matters more than insulation alone in New Zealand homes

Adding extra insulation can help - but without proper airtightness, it often creates bigger problems.

When a home isn’t airtight, warm and moist air leaks into the wall and ceiling cavities, that moisture then condenses, gets trapped, and leads to mould growth, timber rot, damp insulation, and long-term structural damage.

This is why renovation projects across New Zealand regularly uncover mouldy framing, wet pink batts, and insulation that has slumped from moisture exposure. Interestingly, the only dry areas are often where insulation has fallen away... because those spaces could actually dry out. The real issue isn’t insulation… it’s uncontrolled airflow.

At Devlin Property, we take a high-performance building approach. Our homes are designed with airtight construction and balanced ventilation, creating a controlled indoor environment where fresh air is delivered efficiently, stale air is removed, and moisture is managed properly. The result is a healthier, drier, more energy-efficient home built to last.

Thinking about building or renovating with performance in mind?
Learn more about our DEVPRO™ Build System and message us today.

🏠 Based in Whangārei, New Zealand - building high-performance, energy-efficient homes
📍 Serving Northland and the Pacific (from the Harbour Bridge to the Islands)

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