Rohan Off Grid Strawbale Home 2024

House Notes – Rohan Off Grid Strawbale Home

Our dream was to create an off-grid, eco friendly home that melded modern features with a rustic country feel and would leave a very small footprint.

Everything used in the house has a story; a large majority of the wood featured is salvaged wood we collected over years, the bathroom sink is carved from a stone from our property and the fireplace is also made from our own stone, the remaining sinks are hand beaten copper, and all metalwork and woodwork was done by my husband. We have beams collected from the old Whyalla jetty, wood panels from an old local shearing shed featured in the kitchen, and our front door is made from pallet wood.

The house itself is solar passive, runs completely on solar power, water is entirely from rainwater tanks and our septic system has a grey water diversion system that helps water the garden.
Our appliances are all electrical, no air con, a wood fire heater for winter, windows and doors are double glazed, outer walls are strawbale with render, all internal walls and roof are insulated with Earthwool, wood flooring is bamboo, and internal walls are painted with BioPaint – a natural paint. Our overall aim was to create a healthy, natural and simple home that was low-budget, had basically no running costs and would live harmoniously with the surrounding natural landscape.

Sustainability Features

Years Open
2024
ENERGY AND WATER EFFICIENT FEATURES
    • Energy efficiency:
    • Draught proofing
      Efficient lighting
      Efficient appliances
    • Passive heating cooling:
    • Cross ventilation
      Passive solar designed home
      Shading
      Thermal mass
    • Active heating cooling:
    • Ceiling fans
    • Water heating:
    • Hot water heat pump
    • Water harvesting and saving features:
    • Rainwater storage - Above ground
      Grey water system
      Low flow shower heads
      Low flow taps
      Drip irrigation
    • Above ground rainwater storage Type:
    • Poly tanks
    • Above ground rainwater storage Size
    • 22,500L
    • Energy Efficient Lighting
    • LED lights throughout
      Natural daylight
      Skylight
    • Window Protection:
    • Automation/controls
      Eaves
SUSTAINABLE & RECYCLED MATERIALS
    • Sustainable materials:
    • No skip bin used - all materials used or repurposed. Timber naturally treated against termites
    • Recycled and reused materials:
    • Basins/sinks
      Bath
      Bathroom cabinets
      Benchtops
      Bricks
      Decking
      Doors
      Insulation
      Pallets
      Paving
      Railway sleepers
      Rocks/stone
      Tiles
      Timber
      Wine barrels/crates
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Under-roof
      Ceiling
      Internal walls
    • Ceiling Type:
    • Bulk – glass wool
    • Ceiling Rating:
    • R6
    • Under Roof Insulation Type:
    • Reflective foil
    • Under Roof Insulation Rating:
    • 1.8
    • Internal Walls Insulation Type:
    • Bulk – glass wool
    • Internal Walls Insulation Rating:
    • R4
RENEWABLE ENERGY SPECIFICATIONS
    • All-Electric Home?
    • Yes
    • Renewable energy used:
    • Energy storage/battery
      Solar PV off-grid
    • Size of PV system:
    • 15
COSTS AND COST SAVINGS
    • Total cost of home when constructed:
    • 380,000
    • Cost estimate of sustainable home/features:
    • 380,000
    • Estimate of annual savings:
    • $5000
HOUSE DESIGN SPECIFICATIONS
    • House Size
    • 164
    • BAL Rating
    • BAL – 12.5: Ember attack with heat up to 12.5kW/m2
    • Roof
    • Metal (Colorbond)
    • Wall Materials
    • Insulated panels or blocks
      Lightweight construction (timber frame)
      Strawbale
    • Window and Door Types
    • Double glazing
      Skylights
      Tilt and turn
    • Universal design accessability
    • Adaptive design
    • Universal Design Features
    • 80cm minimum door opening width
      100cm minimum door opening width
      Contrasting colours and material for vision impaired
      Hobless showers
      Lever handles for doors (no knobs)
      No stairs/steps
      No Corner cupboards
      Ramps and path gradients must be less than 20:1
      Space around toilets for ease of access in wheelchairs
      Tapware to be easily accessed from outside the shower
      Washing machine/dryer on plynth for easy access
      Window openings easily accessible

    • Universal Design Features
    • House has no hallways
    • Number of bedrooms
    • 2
    • Number of bathrooms
    • 1
GARDEN AND WASTE REDUCTION
    • Garden / Outdoors
    • Composting
      Drip irrigation
      Local indigenous plants
      Organic
      Permaculture
      Native plants
      Water wise plants
      Wicking beds
    • Waste Reduction Practices:
    • Compost all food scraps
      Make jams/conserves
      Pickle and preserve food
      Plastic free household
      Recycle
      Repair
      Take own containers to the supermarket and for take away food
      Swap with friends and neighbours
      Waste free/reduced construction site
HEALTHY HOME FEATURES
    • Healthy home features
    • Airtight house design
      Carpet free - tiles/concrete/timber flooring throughout
      Chemical free cleaning products used
      Cross flow ventilation
      Indoor plants for air filtration
      Lime render/wash
      Low VOC paints/sealer/varnish
      Natural fibre furnishings
      Natural light and ventilation
      Natural oil sealer/finishes
      VOC free paints/sealer/varnish
Location
Palmer SA 5237
    • Housing Type:
    • Standalone House
    • Project Type:
    • New Build
    • Builder
    • House of Bales
    • Designer
    • Bohdan Dorniak

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