JECO house

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The JECO showhouse is a family home built in 2006 in Camberwell It is a detached house on a small site with 11 others. The site was purchased with planning permission and little scope to externally alter it. It does not have optimum orientation or design, with flat roof, no windows in the Northfacing wall, and no overhanging eaves. Never the less, it is rated at 32 points, equivalent to 7 stars. This was achieved within a cost limit of around 5% above the cost for the 5 star minimum currently required.

The JECO Showhouse is open for tours.

Owners JECO
Location Camberwell
Country Australia
Type Sustainable renovation
House size Medium
Owner contact JECO 0417 104987

Summary of house features

  • Passive solar design - 7 star rating
  • Solar panels, grid interactive
  • Solar hot water
  • Rainwater tanks
  • Water minimisation
  • Super insulation
  • High efficiency appliances and lighting


[edit] Energy design

  • High thermal mass: a concrete slab, with dark tiles, which absorbs and then re-radiates heat
  • Large glazed area to west allows controlled solar gain to heat slab
  • Minimal hardwood – plantation timber
  • Entrance porch creates ‘airlock’, keeping warm air inside, or hot air out
  • Zincalume shiny roof absorbs less heat
  • Light coloured bricks absorb less heat
  • Light coloured rendering, flashing and garage doors absorb least heat

[edit] Windows and doors

  • Cedar window frames are energy efficient and need no treatments
  • Wide gap sealed double glazed units with ‘low e’ glass equal to triple glass
  • East facing windows have solar control glass to further limit solar heat gain
  • West facing windows have fixed or automated awnings to limit solar gain
  • Windows and doors have multi-point locking to avoid draughts
  • Windows are casements to catch prevailing breezes for through drafts

[edit] Super insulation

  • Slab edge and bottom of wall insulated to prevent earth cooling the warm slab
  • Very high levels of reflective and bulk insulation in walls (210mm & 260mm)
  • Very high levels of reflective and bulk insulation in roofs, including garage
  • Residents of Australia, (performing such insulation energy improvements) may be eligible to take advantage of the current Australian Government Insulation Grant program. Approved insulation installers can perform installation at a heavily subsidised costs.

[edit] Water minimisation

  • ‘Caroma’ ultra-low flush toilets
  • Super-low flow suction shower heads
  • Low flow aerated taps throughout
  • Ceramic disc mixer valves - never drip
  • Hot water on demand without waste
  • Very low water capacity bath
  • Xeriscaped (minimal water) garden

[edit] Recycled materials

  • "Smorgon" ARC recycled steel reinforcement used in slab
  • "GB blend" concrete made with power station waste used in slab
  • "Modwood" long-lasting recycled plastic-wood composite for decking

[edit] Lighting and eletrical

  • All lights including downlights are efficient fluorescent units
  • High efficiency (star rated) appliances
  • ‘Power Genie’ devices to turn off units to avoid standby usage
  • Essential and non-essential circuits

[edit] Other special features

  • Excavated soil re-used on site
  • Permeable paving allows rain to soak into soil rather than go direct to drains
  • Minimised use of PVC (manufacture of which may cause carcinogenic dioxins)
  • Minimised use of MDF wood substitute and specifying low VOC alternatives to reduce outgassing of toxic gasses
  • Use of low VOC paints such as Watyl id

[edit] Credits

  • Supervising architect and Construction Queen: Paula Gibson-Roy
  • Builder: CDM

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