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Dedicated to educating designers, trades and consumers in the fundamentals of building science.

Bathroom Moisture Management – Why Heating and Ventilation Work Together

by Greg on June 3, 2026June 3, 2026

Modern bathrooms produce high levels of moisture during normal use, particularly when showering. Managing this moisture effectively is essential to prevent condensation, mirror fogging, and long-term issues such as mould growth.

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Understanding Roof Colour Thermal Ratings Under NCC 2025 Part J

by Greg on May 26, 2026May 26, 2026

For builders, designers and clients, these additional figures can seem confusing at first. This article explains what they mean in simple practical terms.

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Knee Walls: When Better Language Leads to Better Buildings

by Greg on February 6, 2026February 6, 2026

Better terminology, such as “knee wall” and “attic” leads to better decisions. Better decisions lead to better buildings.

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NatHERS vs DTS Glazing Rules – Clearing Up the 5% Myth

by Greg on September 30, 2025September 30, 2025

One of the most common misconceptions I come across is the idea that all windows in energy compliance must fall within 5% of the SHGC and U-values listed in the energy report. This simply isn’t true.

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Gold Star Building Performance is Now a Registered Trademark

by Greg on July 16, 2025July 16, 2025

We’re excited to share that Gold Star Building Performance is now officially a registered trademark in Australia.

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Designing for Extremes: How Gold Star Uses the 99% and 1% Rules for Heating and Cooling Loads

by Greg on June 25, 2025December 17, 2025

Many building energy models rely on climate averages, which smooth out extremes. That’s fine for annual energy estimates, but it can lead to undersized or underperforming heating systems.

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Winter Condensation: Why the ‘Dry’ Mode on Your AC Might Be Making Things Worse

by Greg on June 17, 2025December 17, 2025

Don’t use the ‘Dry’ setting on your air conditioner in winter.
It’s designed for warm weather, and using it in cold conditions will likely make condensation worse, not better.

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MBAB Study tour

by Greg on June 13, 2025June 13, 2025
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how does gold star out perform nathers star ratings?

by Greg on June 10, 2025June 10, 2025

Gold Star outperforms NatHERS Star Ratings by addressing critical real-world performance issues that NatHERS either ignores or oversimplifies.

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