Technology: Building Science, Passivhaus and Smart Homes
When we think of technology, it's easy to imagine just computers and phones, but technological advances in construction mean so much more. Using the latest techniques can help you build a unique, comfortable and healthy home — one that is energy-efficient, structurally sound and cheaper to run.

The Building Envelope
Building science is the study of how air, moisture and heat move through a building's outer layer — the building envelope. There are four main building control layers: the water control layer, the air control layer, and the thermal and vapour control layers. Each serves a different function, and getting them right is crucial.
Think of it like a puffer jacket. It's warm because it's stuffed full of insulation, but if you don't zip it up (airtightness), you'll still get cold. Windows are like putting clear plastic over a hole — even triple-glazed windows still perform worse than a standard insulated wall.
Passivhaus Standard
Passivhaus is the world's leading standard for energy-efficient construction. A Passivhaus-certified home maintains consistent indoor temperatures with minimal energy use, using super-insulation, airtight construction, high-performance windows, thermal bridge-free design and mechanical ventilation with heat recovery.
My recommendation is to build to Passivhaus Standard if possible for your project. It's not just about energy savings — it's about comfort, health and building longevity.

Smart Homes
Smart home technology can enhance convenience, security and energy efficiency. From automated lighting that follows your circadian rhythm to heating systems you can control remotely, technology should serve your lifestyle — not complicate it.
Building Envelope Checklist
- Is the water control layer properly detailed?
- Has airtightness been tested with a blower door test?
- Are thermal bridges minimised at junctions?
- Are windows and doors high-performance rated?
- Is mechanical ventilation with heat recovery included?
About the Author
Luke Davies
Luke is the founder of Davies Design & Construction and author of Dream Home. He writes about home design philosophy, lean construction, and building businesses that put people first.
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