sustainable renovation

sustainable renovation slab poured

Demolition has been completed on our latest sustainable renovation. The slab is being poured and soon the rammed earth crew from Earth Structures will be setting up their formwork. This is going to be an intricate build with thermal bridging eliminated and a complex heat recovery system, but we have a great team including Doug & Jason from Ridge Developments and Peter Steudle from Passive House. This will be an interesting one to watch, stay tuned for more updates.



Type: Residential alteration & addition

Location: Armadale

Size: Site 435m2, Existing building 150m2, Proposed building 170m2 & shed 25m2, Garden/Outdoor Entertaining 241m2

Challenges: south facing block, heritage overlay, bulky adjoing properties, sloping block, targetting Passivhaus standard

Features: 3 bed, 2 bath, open plan living, lounge/home office, two courtyards for outdoor living, rammed earth wall, morphed butterfly roof


Sustainable strategy:

Hot water: sanden energy efficient hot water heat pump

Water Saving: 2 x 5,000 L underground water tanks, grey water divesion to garden

Renewable Energy: Solar PV system

Passive Design: Morphed butterfly roof provides high-level shaded north facing windows to bring light into south facing extension, minimised east/west glazing, airlock between existing and proposed, operable windows located for cross ventilation, high thermal mass in rammed earth and living slab, high level airtightness

Building materials: Rammed earth, Australian hardwood timber cladding stained, high levels of insulation to proposed and existing, steel framing minimised

Windows: Timber high performace double glazed windows

Active Heating & Cooling: MHRV (Mechanical Heat-Recovery Ventilation), Haiku Ceiling fans, hydronic towel rails

Lighting: Daylight maximised , LED fittings

Paints, finishes & floor coverings: low VOC paint throughout, external blinds shade doors & windows where necessary

Other ESD features: building footprint minimised to preserve garden for growing food

heritage sustainable renovation

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