Important changes to the Building Regulations 2000 Requirement L:
Conservation of fuel and power
From January 2007 all building work in the London Borough of Waltham Forest will be expected to meet the new Building Regulations thermal standards.
This means that insulation levels in all walls, floors and roofs may be higher than previously used and will mean some fundamental changes to the building design; for example in loft conversions, external stud walls will need to be at least 125mm (5 inches) thick instead of the previously accepted 100mm (4 inches).
For your guidance and to help you and your builders to order and use the correct materials and of course to prevent any unnecessary delays, expenditure and problems on site, see the explanatory table below that provides alternative ways of achieving the new standards.
The table uses all of the most commonly available materials and will be suitable in most instances. However we do accept that there are many different materials available and many ways of achieving the same results. In this instance it is strongly recommended that you contact the Building Control Service before buying insulation to check its suitability.
These new standards will be imposed on all new applications, including Building Notice applications that have not yet started. However, any Full Plan applications that have already been approved will only be subject to the standards current at the time of that approval.
This information was correct at the time of writing (February 2007)
Contact us
Building Control
Environment and Regeneration
Waltham Forest Council
Sycamore House
Forest Road
London E17 4JF
Tel 020 8496 3000
Email building.control@walthamforest.gov.uk
