Most Australian building companies believe that mounting pressure by regulators willl compel the industry to build energy efficient housing within five years.
A new study by BIS Shrapnel, “Attitudes of residential builders to energy issues and usage in Australia, 2001/02”, demonstrates that most builders are sympathetic to the concept of the “clean, green” home, but are deterred by perceived higher building and installation costs. Further, builders believe that greater community education is required of the benefits of energy efficient housing. The study involves interviews with 121 building firms in all the mainland state capitals.
It found substantial increases over the past 12 to 24 months in the installation of building products with a significant bearing on energy efficiency and usage, including air conditioners, floor and wall insulation, hot water temperature controls, water efficient shower heads, and even solar hot water systems, where the level of acceptance has been low.
The study also identifies substantial differences in attitude and product usage between the states, and between the sectors of the building industry. For example, small builders tend to be more sympathetic to environmental considerations in housing design than their larger colleagues who are much more likely to cite competitive price advantage for a luke-warm attitude.
But the industry is almost unanimous in its view that change will be driven by the regulators, and particularly by local authorities with one builder commenting: “legislation is required ….because people are not interested in more expensive options. Hence it must be enforced.”
The most compelling reasons cited by builders for support of the concept are energy efficiency, long term cost savings and reduced environmental impacts.
Builders nominate increased construction costs as the standout reason for not recommending energy-efficient solutions - “to be green is more expensive”, said one respondent. For example, only three percent of new homes have solar hot water heaters installed. Builders believe that only lower costs and/or rebates will result in an increase in this figure.
The study indentifies and researches the incidence of 15 major building projects which impact on energy efficient and discovers variations between the states:
New South Wales is the leading installer of air conditioning and well above average installer of ceiling insulation, wall insulation and gas hot water systems.
Victoria is the leader in ceiling insulation, gas hot water systems, insulated hot water pipes, ducted gas heating and ducted evaporative cooling.
Queensland leads the way in the installation of roof insulation and electric hot water systems, but lags well behind other states in wall insulation, gas hot water systems and air conditioning.
South Australia is a high installer of energy-efficient products and the leader in wall insulation, water efficient devices and floor insulation.
Western Australia is the leading installer of hot water temperature control and solar water systems but has a very low rate of wall insulation due to the prevalence of double brick housing.
Source: Building Products News.