Wilkinson’s House 2020

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Location
Harrisdale WA 6112
    • Housing Type:
    • Standalone House
    • Project Type:
    • New Build
    • Open with support of
    • Renew Perth Branch
    • Designer
    • Solar Dwellings

About Wilkinson’s House

This house is being supported by Solar Dwellings. This is the third passive solar house that I have had built, and the most successful by far. Griff Morris has been a great help all the way through the project – right from advising on the block (several earlier ones were overlooked on his advice) and then design through construction and fitout.

The house tries to combine the functionality of a passive solar house with some visual appeal – I am much in favour of the style of Frank Lloyd Wright and Sarah Susanka (author of The Not So Big House).

I was fortunate to find a block in a new estate that is supporting sustainable development – the block is 18m x 24m and faces due east. Also, there are concessions with setbacks, as well as rebates for installation of solar hot water, solar PV panels and a water tank.

I have been in the house since 2013 and, although the house has two shade sails (north and south), I have found some weeks in summer a bit hot, so I have installed a small air conditioner. I occasionally need to use the reverse cycle in winter.

The house has been situated as far to the south and west as possible to allow for a reasonable-sized garden, which features mostly fruit trees. The colorbond fencing has been covered by reed panels in an effort to minimise the amount of heat reflected into the house. To shelter the southern windows from the afternoon sun, we have built manually operated shutters; they also keep the cold out in winter.

I upgraded from 1.5kW to a 3.6kW PV system in summer as it was not generating enough energy during winter. Also installed a 22kW battery. I installed a monitoring system to track my energy generation and consumption in 15-minute intervals; this has been helpful in maximising my consumption of energy. Consumption from the grid is about 1kW hr per day.

I recently installed a curtain to separate the laundry from the living room, and have started to experiment with Perspex as a form of secondary glazing on some windows that are not low-e glass. I converted the single-brick wall to the garage into reverse brick veneer to reduce the heat flow between the garage and house.
Purchased an EV a month ago so reducing green house gas emitted due to transport.

Designed by Griff Morris and Ken Wibberley from Solar Dwellings.

This house achieved a NatHERS rating of 9.1 stars using NatHERS accredited software (FirstRate5). Find out how the star ratings work on the Nationwide House Energy Rating Scheme (NatHERS) website.

 

 

 

 

Meet the owners of  ‘Wilkinson’s House’ and other Solar Dwellings Home owners on Sunday 20th September for our special SHD event at Home Base. Find out more here.

This home is supported by

Perth Branch

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SUSTAINABLE FEATURES

Years Open
2014
2015
2016
2017
2018
2019
2020
ENERGY AND WATER EFFICIENT FEATURES
    • Energy efficiency:
    • Draught proofing
      Efficient lighting
      Efficient appliances
      Energy monitoring

    • Energy efficiency:
    • Override switch over four kitchen appliances
    • Passive heating cooling:
    • Cross ventilation
      Passive solar designed home
      Shading
      Thermal mass
    • Active heating cooling:
    • Ceiling fans
      Split system airconditioner
    • Water heating:
    • Solar hot water (flat panel)
    • Water harvesting and saving features:
    • Rainwater storage - Above ground
      Low flow shower heads
      Low flow taps
      Drip irrigation
    • Average water consumption per day:
    • 100 l
    • Above ground rainwater storage Type:
    • Plastic
    • Above ground rainwater storage Size
    • 10k l
    • Energy Efficient Lighting
    • Natural daylight
      Solar skylight
      Tubular skylight

    • Energy Efficient Lighting
    • 10 x recessed LED downlights (types that can have the ceiling insulation around the light fitting)
    • Electric Vehicle Type
    • Hyundai Ioniq Electric
    • Window Protection:
    • Adjustable Shading
      Awnings (external)
      Deciduous tree/vegetation
      Drapes/curtains
      Eaves
      Pelmets
      Shade Sails
      Shutters
SUSTAINABLE & RECYCLED MATERIALS
    • Sustainable materials:
    • Timber doors Low VOC paint on walls and stains on doors Dark coloured tiles on northern side of house
    • Recycled and reused materials:
    • Doors
INSULATION SPECIFICATIONS
    • Insulation Type:
    • Under-roof
      Ceiling
      External walls
    • Ceiling Type:
    • Bulk – glass wool
    • Ceiling Rating:
    • R4.0 (including garage)
    • Internal / External Walls Type:
    • Brick
    • Under Roof Insulation Type:
    • Insulated reflective foil (Anticon)
    • Under Roof Insulation Rating:
    • R1.3
    • External Walls Rating:
    • R1.6
    • External Walls Type:
    • Reflective insulation
RENEWABLE ENERGY SPECIFICATIONS
    • All-Electric Home?
    • No
    • Renewable energy used:
    • Energy storage/battery
      Solar PV grid connect
    • Size of PV system:
    • 3.6kW
    • Average Daily Energy Consumption:
    • 2kW per day
COSTS AND COST SAVINGS
    • Total cost of home when constructed:
    • $262,000
    • Cost estimate of sustainable home/features:
    • Many sustainable features were included in the construction price
HOUSE DESIGN SPECIFICATIONS
    • House Size
    • 230m2
    • BAL Rating
    • BAL – Low: There is insufficient risk to warrant specific construction requirements
    • Roof
    • Metal (Colorbond)
    • Wall Materials
    • Double brick
    • Window and Door Types
    • Double hung
      Low-e, films
      Sliding windows/doors
      Sun Tunnel/SolaTube
      180 degree opening doors

    • Window and Door Types
    • DIY 4.5mm Perspex installed in ensuite
    • Universal design accessability
    • Universal access
    • Universal Design Features
    • 80cm minimum door opening width
      Flush thresholds (no lip) to all external doors
      Hobless showers
      Lever handles for doors (no knobs)
      Minimum 110cm wide hallways
      No stairs/steps
      Power points at 60cm above floor level and 50cm from internal corners
      Pull out shelving easily accessible in wheelchairs
      Ramps and path gradients must be less than 20:1
      Semi recessed basins
      Shower head on rail for various heights
      Slip resistant flooring
      Space around toilets for ease of access in wheelchairs
      Tapware to be easily accessed from outside the shower
      Window openings easily accessible
    • Number of bedrooms
    • 3
    • Number of bathrooms
    • 2
GARDEN AND WASTE REDUCTION
    • Garden / Outdoors
    • Drip irrigation
      Edible garden
      Organic
      Wicking beds
      Worm farm
    • Waste Reduction Practices:
    • Recycle
      Repair
HEALTHY HOME FEATURES
    • Healthy home features
    • Cabinet design to minimise dust collection
      Carpet free - tiles/concrete/timber flooring throughout
      Cross flow ventilation
      Indoor plants for air filtration
      Natural light and ventilation
      Natural oil sealer/finishes
      VOC free paints/sealer/varnish

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