why do we need energy efficient housing
Building and renovating homes requires the use of a lot of resources and building materials. Many of the decisions you make about building products will affect the quality and comfort of your home, as well as future maintenance costs. They will also have an impactвconsider that up to 40ВperВcent of the waste going to landfill in Australia is. Choose long-lasting, durable materials that don't need a lot of maintenance. Windows, doors and skylights
Windows can let in or leak away up to 40В perВ cent of your home heating or cooling energy. You can reduce this loss by up to 80В perВ cent by choosing energy-efficient windows. Look for the on windows. The Heating Star rating shows how well the window keeps heat in.
The Cooling Star rating shows how well it stops the heat from entering. Some doors and skylights also have a WERS rating. Choose double glazing and a timber or insulated frame for a high WERS rating. Choose windows and skylights that can be opened. Make sure they are airtight when closed. Also think about window coverings like heavy curtains, pelmets, blinds, external awnings or shutters. If you use timber for windows, frames, flooring or decking, make sure it comes from. Options include FSC-certified (Forest Stewardship Council) timber or organic plantation pine treated with LOSP (light organic solvent preservative).
Many plantation timbers are available for decking, or composites made of sawdust and recycled plastic. Seal timber floors from air leaks and insulate in cold areas. The paint colours you choose for your home can have an effect on lighting and heating levels. Use light-coloured interior paints to improve daylight levels inside your home and reduce the need for lighting during the day. Pre-1970s homes are likely to contain lead-based paints. If youвre removing lead-based paint follow the advice in, and has further information about lead-based paint. Use low-emission paints to reduce toxic fumes. Some paints are now available that contain all-natural ingredients.
Identify building materials and appliances that can be re-usedвfor example, windows, doors, roofing tiles and dishwashers. Make sure your builder has a waste and recycling plan in place. Work with them to minimise waste and recycle leftover building materials to reduce landfill. Buy recycled building products. Not only will this save energy that is required for the production of new materials, it can also lead to considerable savings. Recycled products can also add charm and atmosphere to homes. More broadly, we need to realise that a high thermal performance home (with good insulation, draught proofing and well-designed glazing) above the outdoor temperatureБ in both winter and summer.
Extra internal mass or phase-change materials can help to stabilise the temperature, duration of hot spells, so thermal mass is becoming less effective. The houses they built up here in FNQ are mostly timberframe/steelframe with insulation in the walls. Outside is usually some sort of cladding like hardiflex or even worse brick veneer (thermal mass outside). I don t know if they put insulation into the ceiling, but it s definitely under the roof sheeting, which doesn t help avoiding heat build up under the roof. Next thing then are standard air cons without any humidity control, unless you can do with the ac at 19 deg to get the humidity out П Oh and the roof layout on modern homes is the most idiotic thing of it all.
I mean, just look at google earth and see for your self how stupid most of them are as the roof is so jagged up into small pieces that go into all directions so you won t be able to fill it efficiently with solar panels. total madness this. My dream home would be made from internal concrete wall, nice insulation on the outside with hardiflex on top and a flat roof, no eaves (two story) and a HAVC system for the whole house that extracts heat/cold from the air it exchanges with the outside (recuperation) at 90% efficiency. Heating or cooling something like that will be easy peasy.
- Autor: ArturElin
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