Energy Efficient Design Builders
Capital Building Contractors a ‘Green Living Master Builder’, tries to incorporate energy efficiency measures in all of its project designs.
The following items are important for achieving an energy efficient home and will save you on heating, cooling and water use. We invite you to discuss the recommended items/options and associated costs with us during the design/consultation process.
Remember, a Sustainable design Home is a lower cost home to run and does not necessarily cost any more to design and build.
Energy Efficient Design Measures:
- Make the most of existing spaces before adding new areas.
- Always look to orientate living areas and indoor-outdoor areas to the north.
- Minimize west, east and south facing windows without compromising ventilation. Blinds or shutters for east and particularly west facing windows.
- Ensure house has some sort of shading (eave/roof/ pergola) cover to protect windows from direct sun during summer months.
- Double glazing in combination with full-length curtains and Pelmets.
- Roof vents which can be closed in winter.
- Flat roofs, without roof cavity, should not be built
- Flat roofs can be built with a cavity and should have at least 3 degrees fall.
- Avoid Skylights unless no other alternative, then use double glazed opening type.
- Recommend additional ceiling insulation as well as ‘Aircell’ or sarking under tiles and steel roofing.
- Recommend continuous gas hot water booster units, or heat pump storage type.
- Recommend reversible Ceiling fans.
- Mechanical ventilation to roof cavities should include auto closing cowels.
- For upper storey walls also consider polystyrene wallboards with a render finish to achieve higher insulation values.
- Lighting should be by low energy (low wattage) Compact Fluro and LED type lighting. Capital will no longer install halogen recessed down-lights.
- For timber floors recommend ‘Aircell’ insulation or similar over bearers before placing joists.
- For brick houses try to recycle existing roof tiles, clay bricks and large timber beams.
- Capital generally recommends recycled bricks and roof tiles out of necessity, to best match existing.
- Suggest installation of diverter valves to redirect (on demand) water from showers and laundry only for soaker drainage garden watering.
- Install rainwater tanks to supply toilets, laundry and garden water. Filters, and mains re-direction pump.
- Recommend heat recovery ventilation systems to reduce heating and cooling costs.
- Install solar power generation, some good deals and rebates still available.
- Use locally produced materials as much as possible
- Use materials which require less energy to produce
- Zoning and insulation of utility areas and adjoining garage walls and ceilings.
- Use sustainable materials ie plantation timber verses rain forest timbers.
- Recycle building materials as long as they are still sound
- Capitals project waste is recycled and only about 30% goes into landfill