roof. Although your existing property may not comply with this standard, any new rooms will have to. In simple
terms, the walls, roof slopes and ceilings around the new rooms are required to have a resistance against heat
loss (known in the Building Regulations as a `U' Value). The minimum standard that each element is required
to meet is shown in the table below:
efficiently of your home. The loft conversion should be constructed so that there are no avoidable `cold spots'
in the insulation caused by gaps between materials, at the joints and at the edges, such as those around
window and door openings. Reasonable provision should also be made to reduce unwanted air leakage
through the new loft conversion, ie sealing gaps around window openings and floor edges.