JnJ’s 2024

House Notes – JnJ’s

We wanted to create a sustainable house to benefit the environment by reducing the production of carbon dioxide and reducing the running costs of the house. All of the external walls of the house are straw bale and most of the internal walls are mud brick. All of the windows are double glazed. The house has a lot of curved walls, which does mean some compromise in eve width and window orientation, however most windows are NE, N or NW and eve widths are a minimum of 600mm. Windows facing WNW and W have external blinds. The house has very good ventilation capabilities with an openable skylight at the high point of the cathedral ceilings, the hot air rising draws in cooler air through the windows. The ceilings are insulated with R3.5 polyester batts and foil sarking, the house is on an uninsulated concrete slab. We do not have mains water or sewer connection, we harvest our rain water and have a worm farm waste system. We are mains electricity connected but have 6.5 kW of solar, we have a heat pump hot water system, no air conditioning and our only heating, used in evenings over the colder months is a combustion fire.

Sustainability Features

Years Open
2023
2024
ENERGY AND WATER EFFICIENT FEATURES
    • Energy efficiency:
    • Draught proofing
      Efficient lighting
      Efficient appliances
      Energy monitoring
    • Passive heating cooling:
    • Cross ventilation
      Earth covering
      Passive solar designed home
      Shading
      Thermal mass
    • Active heating cooling:
    • Ceiling fans

    • Active heating cooling:
    • combustion fire
    • Water heating:
    • Hot water heat pump
    • Water harvesting and saving features:
    • Rainwater storage - Above ground
      Blackwater system
      Grey water system
      Worm farm septic tank system
      Stormwater management
      Low flow shower heads
      Low flow taps
    • Average water consumption per day:
    • 75 L
    • Above ground rainwater storage Type:
    • Corrugated iron
    • Above ground rainwater storage Size
    • 40 kL
    • Energy Efficient Lighting
    • LED lights throughout
      Natural daylight
      Skylight
    • Electric Vehicle Type
    • Tesla
    • Window Protection:
    • Adjustable Shading
      Blinds
      Eaves
SUSTAINABLE & RECYCLED MATERIALS
    • Sustainable materials:
    • Straw bale walls are rendered with on site mud. Mud bricks are made with on site mud.
    • Recycled and reused materials:
    • Paving
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Under-roof
      Ceiling
      Internal walls
      External walls
    • Ceiling Type:
    • Bulk – polyester
    • Ceiling Rating:
    • R 3.5
    • Under Roof Insulation Type:
    • Reflective foil
    • External Walls Rating:
    • R 7.0
    • External Walls Type:
    • Straw (stawbale walls)
RENEWABLE ENERGY SPECIFICATIONS
    • All-Electric Home?
    • Yes
    • Renewable energy used:
    • Solar PV grid connect
    • Size of PV system:
    • 6.5 kW
    • Average Daily Energy Consumption:
    • 2 kWh
COSTS AND COST SAVINGS
    • Total cost of home when constructed:
    • $250000
    • Cost estimate of sustainable home/features:
    • $10000
HOUSE DESIGN SPECIFICATIONS
    • House Size
    • 230
    • BAL Rating
    • BAL – 29: Increasing levels of ember attack and ignition of debris with a heat flux of up to 29kW/m2
    • Roof
    • Metal (Colorbond)
    • Wall Materials
    • Mud brick
      Strawbale
    • Window and Door Types
    • Double glazing
      Double hung
      Skylights
    • Number of bedrooms
    • 3
    • Number of bathrooms
    • 2
GARDEN AND WASTE REDUCTION
    • Garden / Outdoors
    • Composting
      Edible garden
      Frog friendly
      Local indigenous plants
      Orchard
      Permaculture
      Native plants
      Wicking beds
      Worm farm
    • Waste Reduction Practices:
    • Compost all food scraps
      Make jams/conserves
      Recycle
      Repair
      Swap with friends and neighbours
      Waste free/reduced construction site
HEALTHY HOME FEATURES
    • Healthy home features
    • Airtight house design
      Cabinet design to minimise dust collection
      Cross flow ventilation
      Indoor plants for air filtration
      Lime render/wash
      Low VOC paints/sealer/varnish
      Natural fibre furnishings
      Natural light and ventilation
Location
Red Hill VIC 3937
    • Housing Type:
    • Standalone House
    • Project Type:
    • New Build
    • Builder
    • Hands on owner built

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