Re roofing and renovation of thermal elements
A thermal element is a roof, wall or floor which separates a thermally conditioned (heated or cooled) space from any of the following:
- the outside (including the ground)
- an unheated part of the same building
- a structure exempt from the building regulations, such as porch or conservatory
- part of the same building heated or cooled to a different temperature
Renovation means adding a new layer or replacing an existing layer. When the renovation takes up more than 25% of the surface, Building Regulations approval is needed and you may also need to provide more insulation.
Because of this, some work that used to be free from Building Regulations as it was considered a repair now needs approval.
For example:
- replacement of a slate or tiled roof covering even if like for like
- re-plastering of a wall
- replacement of felt on a flat roof
- renewal of a ceiling below a cold loft space
- external rendering or re-rendering of a wall
- renewal of cladding to a dormer
- renovation of a ground floor involving replacement of screed or timber decking
If you do not send in an application for work you could be prosecuted and fined and it may cause problems if the property is sold.
Building control
Address: PO Box 15Council House
Earl Street
Coventry
CV1 5RR