Thylogale 2020

House Notes – Thylogale

Going off grid in retirement is a dream for many, and reality for this couple who run their house and car from a solar and micro-hydro power system.

When Peter and Robyn Tuft decided to make a move from Sydney to Southern Tasmania, they sometimes joked about being climate change refugees – but their joking was only partly in jest. Sydney was getting too hot and too busy. They yearned for a cooler climate, a slower pace and water views. Their journey in search for a refuge brought them to an 80 hectare slice of heaven in the hills above the village of Kettering, and ultimately to the creation of a home that would tread lightly on the planet.

In its relatively remote hilltop location, the house had to be fully self-sufficient for energy and water. Solar panels provide all electricity, supplemented by a micro-hydro generator when the creek on the property flows in the cooler months. All water is harvested off the roof and hot water comes from the roof-mounted solar system. This is supplemented by the wetback indoor wood heater which also supplies a hydronic heating system in both pavilions. The two bathrooms have composting toilets and grey water is filtered through reed beds before being used to irrigate the property’s orchard. All appliances were selected for low energy and water consumption. The house produces vastly more energy than it uses so the excess is used to charge an electric car.

Peter and Robyn are also keen to share the house with others to demonstrate the superb results that can be attained in sustainable building.  “This house is so comfortable – much more so than our on-grid Sydney house. It’s really testament to what’s possible with living off-grid.”

Sustainability Features

Years Open
2016
2020
ENERGY AND WATER EFFICIENT FEATURES
    • Energy efficiency:
    • Draught proofing
      Efficient lighting
      Efficient appliances
      Energy monitoring
    • Passive heating cooling:
    • Cross ventilation
      Heat recovery ventilation system
      Passive solar designed home
      Shading
      Thermal mass

    • Passive heating cooling:
    • Very large NE facing windows provide generous winter heating
    • Active heating cooling:
    • Ceiling fans
      Heat exchange ventilation system
      Hydronic
    • Water heating:
    • Solar hot water (evacuated tube)
      Wood fire wetback

    • Water heating:
    • Surplus power from micro-hydro
    • Water harvesting and saving features:
    • Rainwater storage - Above ground
      Compost toilet
      Grey water system
      Stormwater management
      Low flow taps
      Drip irrigation

    • Average water consumption per day:
    • 70 L
    • Above ground rainwater storage Type:
    • Colorbond steel tanks
    • Above ground rainwater storage Size
    • 2 x 10,000 L
    • Water harvesting and saving
    • 15 m2 reed bed for greywater treatment before drip irrigation
    • Energy Efficient Lighting
    • LED lights throughout
      Natural daylight
      Skylight
    • Electric Vehicle Type
    • Tesla Model 3 long range, Mitsubishi iMiEV
    • Window Protection:
    • Blinds
      Drapes/curtains
      Eaves
SUSTAINABLE & RECYCLED MATERIALS
    • Sustainable materials:
    • External timber cladding and living room ceiling from timber felled and milled on site. External stone plinth and internal fireplace/chimney from stone collected on site.
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Ceiling
      External walls
      Floor
    • Ceiling Type:
    • Double batts + reflective membrane
    • Ceiling Rating:
    • R5.3
    • Floor Type:
    • Bulk - polystyrene board
    • Floor Rating:
    • R2.1
    • Internal / External Walls Type:
    • Double batts
    • Internal / External Walls Rating:
    • 4.0
    • External Walls Rating:
    • 5.3
    • External Walls Type:
    • Double batts + membrane
RENEWABLE ENERGY SPECIFICATIONS
    • All-Electric Home?
    • No
    • Energy star rating:
    • 6
    • Renewable energy used:
    • Energy storage/battery
      Micro-hydro
      Solar PV off-grid
    • Size of PV system:
    • 4 kW solar, 0.8 W hydro
    • Average Daily Energy Consumption:
    • 5
COSTS AND COST SAVINGS
    • Total cost of home when constructed:
    • $1,200,000
HOUSE DESIGN SPECIFICATIONS
    • House Size
    • 240 m2
    • BAL Rating
    • BAL – 19: Increasing levels of ember attack and ignition of debris with a heat flux of up to 19kW/m2
    • Roof
    • Metal (Colorbond)
    • Wall Materials
    • Stone
      Timber
    • Window and Door Types
    • Double glazing
      Low-e, films
      Sliding windows/doors
      Tilt and turn
    • Universal design accessability
    • Wheelchair accessible
    • Universal Design Features
    • Hobless showers
      Lever handles for doors (no knobs)
      No stairs/steps
      Washing machine/dryer on plynth for easy access
      Window openings easily accessible
    • Number of bedrooms
    • 3
    • Number of bathrooms
    • 2
GARDEN AND WASTE REDUCTION
    • Garden / Outdoors
    • Chickens
      Composting
      Drip irrigation
      Edible garden
      Orchard
      Native plants
      Water wise plants
      Worm farm
    • Waste Reduction Practices:
    • Compost all food scraps
      Make jams/conserves
      Pickle and preserve food
      Recycle
HEALTHY HOME FEATURES
    • Healthy home features
    • Airtight house design
      Carpet free - tiles/concrete/timber flooring throughout
      Cross flow ventilation
      Heat recovery ventilation (HRV)
      Natural light and ventilation
      Natural oil sealer/finishes
Location
Kettering TAS 7155
    • Housing Type:
    • Standalone House
    • Project Type:
    • New Build
    • Builder
    • Skookom (Ian Simondson)

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