No.12
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House Notes – No.12
With a much loved family home in a character protection area we wanted to enhance the house (nearly all of the 1928 structure) with a contemporary extension that addressed sustainability whilst retaining the character of the original without major change. In doing so we demolished only the ‘sleepout’ and laundry as well as the outside toilet and recycled timber for the new deck and bricks for pathways.
The extension provides us with a new living space and main bedroom with ensuite. Polished concrete floor for thermal mass, double glazing, insulation, high louvres and solar orientation the living area has been successful in moderating the climate. Only ceiling fans have been needed even in the heat of summer, aided by a shade sail to keep the direct sun away. By comparison the original rooms are noticeably hotter in summer and colder in winter. Our intent was to reduce energy consumption, including solar HWS, and reuse materials where possible. The house was able to meet our needs as we get older with ease of access inside.
All this was to be complemented by a garden with new trees, native plants and succulents.
Designed by Patrick Irwin Architect and built by Wandoo Design and Construct
Sustainability Features
- Energy efficiency:
- Draught proofing
Efficient lighting
- Passive heating cooling:
- Cross ventilation
Passive solar designed home
Thermal mass
- Active heating cooling:
- Ceiling fans
- Water heating:
- Solar hot water (flat panel)
- Water harvesting and saving features:
- Low flow shower heads
Drip irrigation
- Average water consumption per day:
- 0.1kL
- Energy Efficient Lighting
- LED lights throughout
Natural daylight
- Window Protection:
- Blinds
Shade Sails
- Recycled and reused materials:
- Salvaged boards and beams, recycled jarrah kitchen bench
- Sustainable materials:
- Retention of nearly all of the 1928 structure
Double glazed sliding doors with split frame - timber interior and aluminum exterior
Matrix cladding
- Recycled and reused materials:
- Doors
Paving
Timber
- Insulation Type:
- Under-roof
Internal walls
External walls
- Under Roof Insulation Type:
- Insulated panels
- Under Roof Insulation Rating:
- R4.84
- Internal Walls Insulation Type:
- Polyester
- Internal Walls Insulation Rating:
- R4.16
- External Walls Rating:
- R4.16
- All-Electric Home?
- Yes
- Average Daily Energy Consumption:
- 2.7kwh
- Total cost of home when constructed:
- $395,000
- Cost estimate of sustainable home/features:
- included in overall cost
- Estimate of annual savings:
- TBD
- House Size
- 170m2
- BAL Rating
- BAL – Low: There is insufficient risk to warrant specific construction requirements
- Roof
- Metal (Zincalume)
- Wall Materials
- Lightweight construction (timber frame)
- Window and Door Types
- Double glazing
Louvre windows
Low-e, films
Sliding windows/doors
- Window and Door Types
- Louvres in low-e glass
- Universal design accessability
- Disability access
Universal access
- Universal Design Features
- 80cm minimum door opening width
Hobless showers
Lever handles for doors (no knobs)
Ramps and path gradients must be less than 20:1
Rocker style light switches
Semi recessed basins
Shower head on rail for various heights
- Number of bedrooms
- 3
- Number of bathrooms
- 2
- Garden / Outdoors
- Native plants
Water wise plants
- Waste Reduction Practices:
- Compost all food scraps
Recycle
Repair
- Healthy home features
- Airtight house design
Cabinet design to minimise dust collection
Cross flow ventilation
Indoor plants for air filtration
Natural light and ventilation
Natural oil sealer/finishes
- Housing Type:
- Standalone House
- Project Type:
- Extension and renovation
- Builder
- Wandoo Design and Construct
- Designer
- Patrick Irwin Architect
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