Aluminium window and door framing systems helped add to the energy efficiency of Concrete House, which combined materiality with low-impact construction techniques to deliver an environmentally sustainable build.

Concrete House demonstrates how a family home can showcase thoughtful environmentalism while giving full expression to the joys of beautiful design.

Designed by Rob Henry Architects, Concrete House features polished concrete floors and walls that showcase the house’s minimalist aesthetic. One of Australia’s most desirable yet innovative energy-efficient home designs, this stunning house redefines the contemporary family home for an environmentally-conscious age.

Concrete House design awarded for energy efficient home design

In a testament to its innovative approach, Concrete House was judged the winner of the Australian Institute of Architects ACT Chapter 2019 Malcolm Moir and Heather Sutherland Award for Residential Architecture for its statement of endurance, resoluteness, and sustainability. Every energy-efficient house design decision, material selection, and construction detail have been chosen to extend the dwelling’s lifespan while meeting the challenges of climate change.

Aesthetically, Concrete House makes the most of the site’s considerable advantages. “This is a typical family house for two parents and three children in a beautiful leafy street,” said Rob Henry, architect on the project. “The site itself is lovely and quite generous in scale.”

The clients’ discerning nature was integral to the result. “They were very particular, with many informed ideas on what they wanted,” Rob confirms. “The clients helped drive the whole program, including the core aesthetic, sustainability focus, and use of materials.”

A home structured around human use patterns

From the beginning, Concrete House was destined to stand apart. “As the clients wished to ensure the project had an extremely high level of endurance, we planned the house according to the different lifecycles of who would be living in it at a given time,” Rob notes.

To address this ambition, the Concrete House’s design and floor plan are sensitively structured around human use patterns. “There are three wings in this V-shaped house – one for children, one for parents, and another for general accommodation (which is a retreat to the lower part of the house),” Rob states.

“The children’s wing is both connected and separate,” he continues. “Although it’s part of the wider floorplan, we designed it to be easily closed off from the rest of the environment if they move out in future. There’s also basement-level accommodation for an au pair if required or if elderly parents have to be accommodated.”

Solar orientation and air-tightness

The evocative surroundings of Concrete House have been carefully considered in terms of their effects on the building itself. “The front wing looks onto the leafy streetscape while ensuring all spaces had excellent solar orientation”, improving the home’s overall energy efficiency.

As Rob points out, the window and door framing systems play a significant role in this efficiency dividend. “Concrete House is striving for a passive house standard, based on solar orientation and air-tightness,” he observes. “It utilises triple-glazed windows as key performance measures, enabling optimal operation in Canberra’s climate.

“To ensure those window systems were functioning at the highest possible level to maximise the building’s thermal performance, we also installed all the triple-glazed windows with expanding seals and tapes,” he adds.

“The airtight nature we were able to achieve results in extremely low air changes per hour, increasing energy conservation. The window systems work perfectly in concert with the dual-layer wall system to prevent air leakage.”

An abundance of natural light

Schüco sliding doors open the interior, providing abundant natural light. “Those doors consist of large sliding panes 1800mm wide, with inbuilt retractable flyscreens,” says Rob. “A series of casement windows also adds significantly to the interior light levels.”

Louvres shade the windows at required times to harmonise with the sun’s position. “The louvres we’ve used on the front façade responsively shelter those windows while also creating privacy within the house.

“A central corridor runs through the building’s spine, with the louvred window above the staircase looking out onto the streetscape,” he continues. “We also used slatted window screens in the basement area, which blends in with the cladding while creating a beautiful texture.”

Heat recovery ventilation system

Concrete House’s heating system is another example of the architect’s environmentally responsible thinking. “The heat recovery ventilation system distributes air around the building extremely efficiently by drawing air in from the outside, changing its temperature as it enters,” says Rob. “This fresh air intake promotes circulation while keeping each space at a consistent temperature,” he continues.

Concrete House’s energy-efficient house designs and systems extend beyond heating and cooling to power generation. “The building features hydronic slab hot water coupled with a solar battery system, dramatically reducing energy consumption by allowing the house to run off-grid for extended periods,” Rob concludes.

The care with which Rob Henry Architects have engineered every aspect of Concrete House demonstrates how a family home can showcase thoughtful environmentalism while giving full expression to the joys of beautiful design.

Project Credits

Architect: Rob Henry Architects

Builder: Preferred Builders

Featured Products:

Schüco ASS 70 FD Sliding Series: Aluminium Sliding System
Schüco AWS 75.SI+: Aluminium Window System

Fabricator: ViewCo

Photographer: Light Studies & Rob Henry

Architecture & Design Team

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