Kenzai 2020

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Location
South Coogee NSW 2034
    • Housing Type:
    • Standalone House
    • Project Type:
    • Renovation
    • Builder
    • Life Structures
    • Designer
    • The Design Commission

About Kenzai

Kenzai is a beautifully renovated home overlooking the ocean, inspired by Japanese/Scandinavian design.

Kenzai’s renovation was achieved by The Design Commission, an interior design studio that believes great design should be climate and earth positive. Kenzai was a finalist in the 2017 International Green Interiors Awards and 2017 Sustainability Awards.

Sustainable, environmentally friendly and healthy materials and strategies used in the home include:
• Recycled hardwood double-glazed windows
• Heat recovery ventilation that ‘breathes’ for the house, recovering 90% of heat in winter
• Cross-ventilation and external shading
• Exposed concrete floors/ceilings providing thermal mass
• Sustainably sourced Cedar used to line some internal ceilings/walls and external walls
• Wall/ceiling insulation
• Low energy appliances and fridge housed in ventilated cupboard
• Existing pool converted to 25,000L water tank feeding 3 internal toilets and garden taps
• New pool minimises energy/chemical use, solar pool heating
• Large kitchen garden

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SUSTAINABLE FEATURES

Years Open
2020
ENERGY AND WATER EFFICIENT FEATURES
    • Energy efficiency:
    • Draught proofing
      Efficient lighting
      Efficient appliances
    • Passive heating cooling:
    • Cross ventilation
      Deciduous planting around house
      External planting
      Heat recovery ventilation system
      Passive solar designed home
      Shading
      Thermal mass
    • Active heating cooling:
    • Electric floor heating in some rooms
    • Water heating:
    • Solar hot water (flat panel)
    • Water harvesting and saving features:
    • Rainwater storage - Underground
      Stormwater management
      Low flow shower heads
      Low flow taps

    • Underground rainwater storage type:
    • Old swimming pool with concrete lid
    • Underground rainwater storage Size:
    • 25,000L
    • Water harvesting and saving
    • Tank water feeds 3 toilets
    • Energy Efficient Lighting
    • LED lights throughout
      Natural daylight
      Skylight
    • Electric Vehicle Type
    • Lexus RX 400h Hybrid electric/petrol vehicle
    • Window Protection:
    • Adjustable Shading
      Automation/controls
      Awnings (external)
      Drapes/curtains
      Eaves
SUSTAINABLE & RECYCLED MATERIALS
    • Sustainable materials:
      1. Benchtops made from 75% recycled materials, 25% natural stone & eco resin or from recycled benchtops
      2. Master ensuite sink made from reclaimed marble-based stone composite
      3. Timber flooring from sustainably managed forests
      4. Reuse of sliding cedar screens, cedar ply floor sheets, cedar ply storage units from stripped commercial fit-out
      5. Recycled hardwood double-glazed windows
      6. Cedar bathtub made in Australia
      7. MgO board external cladding (low embodied energy)
      8. Internal walls lined with EchoPanel, created from 60% recycled PET
      9. Tiles with cradle-to-cradle* accreditation in wet areas (* takes into account full life cycle, optimal resource use, recyclability, renewable energy use, water use)
      10. Sustainably sourced Cedar used to line some internal ceilings/walls and external walls

    • Recycled and reused materials:
    • Appliances
      Basins/sinks
      Benchtops
      Concrete
      Doors
      Excavated earth
      Light fixtures / fittings
      Rocks/stone
      Tapware
      Timber
      Windows
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Ceiling
      External walls
    • Ceiling Type:
    • Bulk – polyester
    • Ceiling Rating:
    • R3.5
    • External Walls Rating:
    • R2.0
    • External Walls Type:
    • Bulk – polystyrene board
RENEWABLE ENERGY SPECIFICATIONS
    • All-Electric Home?
    • Yes
    • Renewable energy used:
    • Solar PV grid connect
    • Size of PV system:
    • 5kW
    • Average Daily Energy Consumption:
    • 5kWh
COSTS AND COST SAVINGS
    • Estimate of annual savings:
    • $4,000 per annum
HOUSE DESIGN SPECIFICATIONS
    • House Size
    • 360m2
    • BAL Rating
    • BAL – Low: There is insufficient risk to warrant specific construction requirements
    • Roof
    • Concrete slab, polyisocyanurate (PIR) insulation board
    • Wall Materials
    • Double brick
      Timber

    • Wall Materials
    • Magnesium Oxide (MgO) board cladding, Cedar cladding, Echopanel acoustic panelling by Woven Image
    • Window and Door Types
    • Awning
      Double glazing
      Sliding windows/doors

    • Window and Door Types
    • Steel french doors and all other are recycled timber doors & windows
    • Universal design accessability
    • Adaptive design
    • Universal Design Features
    • Kitchen bench/table for wheelchairs to access (75-85cm high)
      Lever handles for doors (no knobs)
      Minimum 110cm wide hallways
      Slip resistant flooring
    • Number of bedrooms
    • 4
    • Number of bathrooms
    • 3
GARDEN AND WASTE REDUCTION
    • Garden / Outdoors
    • Bee keeping
      Composting
      Edible garden
      Frog friendly
      Local indigenous plants
      Organic
      Permaculture
      Native plants
      Water wise plants
      Wicking beds
    • Waste Reduction Practices:
    • Compost all food scraps
      Recycle
      Repair
      Take own containers to the supermarket and for take away food
      Toy exchange/library
      Swap with friends and neighbours
      Waste free/reduced construction site

    • Other Waste Reduction Practices:
    • send soft plastic, polystyrene, clothing & other recyclable products to local council recycling centre. Avoid using glad wrap or plastics in home.
HEALTHY HOME FEATURES
    • Healthy home features
    • Airtight house design
      Asthma and allergy free certified carpet
      Automated ventilation system
      Chemical free cleaning products used
      Cross flow ventilation
      Formaldehyde free cabinets
      Heat recovery ventilation (HRV)
      Indoor plants for air filtration
      Low VOC paints/sealer/varnish
      Natural fibre furnishings
      Natural light and ventilation
      Natural oil sealer/finishes
      VOC free paints/sealer/varnish
      Wax based sealer/finish

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