REHAU Ltd. - Energy-efficient building and refurbishment

Increase value, save costs: Energy-efficient solutions for new built and refurbishment with REHAU systems

Today almost half of the UK’s carbon emissions come from the use of buildings (27% from homes and a further 17% from non-domestic buildings) – Source: Energy White Paper 2007. The Building Regulations, and Part L therein, set out minimum requirements for energy efficiency for new buildings and for building work to existing buildings including alterations and extensions.
In 2007 the Government set out in its Building a Greener Future – Policy Statement its intention for new homes to be net zero carbon from 2016. As steps to achieving this target, carbon emission standards for new homes are to be improved by 25% in 2010 and 44% in 2013 relative to current 2006 standards.
On 18 June 2009 the Department for Communities and Local Government has published the consultation paper regards the proposals for amending Part L in 2010.
The consultation period will close 17 September 2009, with a final version of the new Part L being published beginning of 2010.
It is envisaged that the changes in Part L for England and Wales will be implemented in October 2010.

Important changes to the Building Regulation – Part L 2010 in comparison to the current Part L 2006 are as follows:

New homes to achieve a 25% improvement on 2006 standards in regards to CO2 emissions. This is to be achieved by every new build dwelling whereas it is proposed to use an “aggregate” approach for non domestic buildings in order to achieve 25% improvement on average for the complete mix of different non domestic buildings.
Overheating in summer will be looked at in more detail with updated weather data (average of 1987 – 2006) and a revised limit on summer solar gains for non-domestic buildings.
Air tightness of new buildings to be improved to 5 m3/(hm2) at 50Pa which results in a trend towards more mechanical ventilation to meet the adequate ventilation requirements.
With improved insulation standards, thermal bridging becomes an increasingly significant proportion of the envelope heat loss. Careful attention to be paid to junction details to maintain the continuity of both the insulation layer and air barrier.

Residential Brochure

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