Sustainable house day 2010


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Details of our home which was part of the 2010 Sustainable House Day.

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Sustainable house day 2010

  1. 1. OUR HOME<br />
  2. 2. Before we moved<br />Our previous home had lots of west facing windows, heated up terribly in summer and then couldn’t be easily cooled when the easterly or southerly cool breezes arrived in the evening.<br />It was also a very cold house in winter, with only one small room (a bedroom) having a north facing window for good access to sun.<br />There had to be a better way of designing a home.<br />So we moved!<br />
  3. 3. As it was in 2000. The original house was built in the 50s.<br />North <br />As it was when we bought it in 2005<br />The site plan as at 2005. The right hand boundary meant we could build a north facing living area. The lane also gave separate access for a rear unit/granny flat.<br />
  4. 4. The original back of the house had west facing windows that we wanted to eliminate as much as possible<br />
  5. 5. Old sheds at the rear of the block were demolished by hand to salvage as much hardwood timber as possible.<br />Some of this timber was used to build the table on the deck, which also included left over timber from the building of the pergola.<br />
  6. 6. During excavation, an old well was discovered under the south west corner of the house (the only part of the old section to be demolished). It held up building for around 4 weeks and is now registered with the Heritage Council!<br />
  7. 7. Extra engineering certification was required as the well had to be spanned with concrete beams.<br />
  8. 8. And then the rains came!<br />
  9. 9. And it was hard to keep the final vision in focus<br />
  10. 10. At least we knew we had experienced tradies on the job<br />
  11. 11. The first of two halves of the rear unit arrives<br />
  12. 12. And is pushed into position by a tractor<br />
  13. 13. The second half arrives, but it is still about 4 months away from being ready for occupancy.<br />
  14. 14. The door in the centre of the old house becomes the only west facing window in the house, a small bathroom window.<br />
  15. 15. The door unit arrives. Looking at various options for higher performance glass, we settled on 4mm thick (standard glass is 3mm) tinted glass in a stackable sliding unit that allows a 4 metre opening.<br />
  16. 16. 60mm Greenboard (polystyrene with R value of 1.9) is fixed directly to timber frame<br />
  17. 17. On the old section of the house, vinyl cladding was removed and 40 mm Greenboard (R value 1.4) is attached directly to the weatherboards<br />
  18. 18. Mesh is applied over the Greenboard which is then cement rendered, and our house becomes an esky.<br />
  19. 19. Direct quote from 5 year old: “If you didn’t have us, how could you get all your work done?!”<br />
  20. 20. Bamboo floorboards were placed over particle board. Left over floorboards were used as the kitchen splashback.<br />
  21. 21. Grapevines planted 3 years ago at northern side of deck now create dense shade over the deck during summer, while allowing sun in through winter.<br />
  22. 22. Our photovoltaic system was first installed in June 2008<br />
  23. 23. .<br />And expanded in March this year. It is now a 2.8 kW system, 16 panels and produces just over 11 kWh per day<br />It will generate an income of around $2800 per year<br />
  24. 24. A 1 kW system was also installed on the unit<br />
  25. 25. We consume between 8 and 9 kWh of electricity per day. (The Australian average per household is 19)<br />Some of the reasons we have lower than average electricity consumption include: <br />Only 1 fridge<br />No air conditioner<br />Heatpump hot water system<br />Low energy lighting <br />Only 1 TV (and a daggy old CRT at that!)<br />No Playstation, Wii, Xbox etc<br />Very little on standby<br />Laptop computers rather than desktops<br />Very conscious of turning off lights and equipment when not being used<br />
  26. 26. We have no air conditioner (though one would be nice for the 40+ days. Lucky we’re so close to the pool!)<br />There are 6 ceiling fans throughout the house. The timber ones were originally in the living area and weren’t strong enough, but work well in the bedrooms.<br />More effective fans:<br />1. Are metal<br />2. Have longer blades<br />3. Are set as low as is safe<br />4. Have more powerful motors<br />
  27. 27. We have a 275 litre Heatpump hot water system that uses about 30-40% of the electricity of an electric storage system.In hindsight we would install a solar hot water system instead<br />
  28. 28. A 4500 litre bladder tank under the old section of the house is plumbed to the back toilet, washing machine and front garden tap.<br />
  29. 29. A 3000 litre tank at the rear of the unit is also plumbed to 2 toilets and washing machine<br />
  30. 30. Compact Fluros (CFLs) are installed throughout the house, including downlights and bathroom Tastic lights. These typically use about 25% of the power of incandescents.<br />The heatlamps remain in the tastics but are not used<br />The new downlights use 60 watts per set of 4 instead of 240<br />An 11 watt ceiling light replaces a 60 watt downlight<br />
  31. 31. The correct way to use 12 volt halogen downlight fittings<br />A robot created at the Lambton Public School “Recycled Robots” day.<br />
  32. 32. InsulationIn the old section, bulk insulation (combination of fibreglassbatts and loose fill) of R 3.5 is in roof. Underfloor polystyrene batts, R 1.4 was recently installed.<br />
  33. 33. Vegetable gardens<br />Established in Spring 2009<br />
  34. 34. We have 3 waste systems for organic waste<br />Our worm farm provides fertilizer for the garden as well as a method of disposing of suitable kitchen waste<br />
  35. 35. The Bokashi compost is an anaerobic fermentation system that can compost all kitchen waste except bones<br />(We are beginning to question the environmental impact of this system) <br />
  36. 36. A conventional compost bin for some garden waste is at the back of the unit, but is not actively composted, just left to its own devices.<br />Other waste<br />We share a general rubbish bin and recycling bin with the rear unit<br />
  37. 37. Cubby house is yet to be retro fitted with sustainable features <br />
  38. 38. Future Plans<br />Paint roof of new section with reflective paint<br />Install external blinds on top louvre windows<br />Install underfloor insulation under new section<br />Change all blinds in old section to more thermally efficient ones<br />Install new roof on old section with solar powered ventilation<br />Continue to explore ways of reducing our energy and resource use<br />