Building quality and performance in homes depends on insulation, windows, and airtightness.
Of these, airtightness is the least controlled in New Zealand housing.
In most countries, minimum airtightness levels are regulated as an essential build quality standard. While New Zealand has no mandatory requirement, the benefits are well proven:
International data shows air leakage accounts for around 25–40% of heating and cooling energy use in a typical home.
Based on data from ENERGY STAR, IECC and ANSI/RESNET.
“I’ve known about the technology for a while and seen them work their magic on other projects. The results speak for themselves.”
Uncontrolled air leakage causes comfort, energy, and durability problems in New Zealand homes — including early condensation and mould in new builds.
Rather than trying to ventilate moisture out of cavities and roof spaces, the better solution is to stop moist air getting in.
Airtightness, combined with proper ventilation, delivers more comfortable, energy-efficient, durable, and healthy homes.
The Energytight™ Solution is a practical, measurable approach to high-performance housing — without the cost or complexity of specialised building systems.
At its core, Energytight™ combines:
Airtightness + Certification + Ventilation
Reduced call backs: By controlling air leakage, Energytight™ helps prevent moist indoor air entering walls and roof spaces, reducing condensation and mould risk and cutting call-backs.
Improved quality: Using AeroBarrier and appropriate ventilation, Energytight™ delivers predictable comfort, energy efficiency, healthy indoor air quality, and long-term durability — using standard construction methods.
The result is a high-performance home without high-performance home costs.
A house needs to breathe—but it should do so in a controlled, consistent way, not just when the windows are open. In an airtight home with proper ventilation, fresh air can flow continuously without relying on open windows or losing valuable heat. This manages internal moisture, reducing condensation, musty smells, and the risk of hidden mould—creating a home that feels fresher, more stable in temperature, and noticeably more comfortable every day.
A house needs to breathe—but it should do so in a controlled, consistent way, not just when the windows are open. In an airtight home with proper ventilation, fresh air can flow continuously without relying on open windows or losing valuable heat. This manages internal moisture, reducing condensation, musty smells, and the risk of hidden mould—creating a home that feels fresher, more stable in temperature, and noticeably more comfortable every day.
Energy efficiency is no longer just about comfort—it’s a key driver in property value and saleability.
Homes with certified performance consistently outperform the market
Airtightness certificates provide proof of perfromance
An airtight, ventilated home isn’t just more energy efficient—it’s a healthier, more comfortable place to live. Compared to a standard home, it performs better in every way— and costs surprisingly little to achieve.
Experience dramatic savings on home heating & cooling
Seal out mould, pollutants & allergens for a healthier indoor environment
Up to 40% reduction in outside noise from traffic & neighbours
Reduce conditions that lead to damp cavities, mould & timber rot
Feel warmer in the winter, cooler in the summer
Seal gaps & holes to create the first line of defense against insects & pests
Our CPD presentation explains how airtightness supports building performance. It includes technical and background information and case studies any New Zealand residential architect will find useful.
Book CPD presentation
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