Roof Insulation Uk Regulations

The removal or alteration to any roof elements could affect how the roof works and cause movement to occur.

Roof insulation uk regulations.

Installing flat roof insulation could save you similar amounts on your heating bills to loft insulation. As a roof is defined as a thermal element the work to re cover a roof should also include for improving the thermal insulation properties of the roof. You are replacing repairing more than 25 per cent of the roof area in which case the roof thermal insulation would normally have to be improved. If your flat roof needs to be replaced anyway you must now insulate it to comply with building regulations.

If you are replacing more than 25 of the roofing area then you will also need to replace the thermal insulation. You should fully consult the regulations and the approved document and if you are in any doubt seek advice before commencing work. Wales new dwellings. Insulation can be placed between the ceiling joists.

Work to an existing roof. Your roof type flat or pitched its structure depth of the rafters your willingness to invest. Insulating a roof is perhaps the easiest of all the energy saving home improvements. Our guides to building regulations in wales adl1a 2014 building regulations.

Movement could cause cracks to. A u value of 0 55 w m k is used for cavity insulation and 0 30 w m k for internal or external wall insulation. It is possible to insulate a flat roof from underneath but this can lead to condensation problems if not completed correctly. In most cases extra investment made in beating the building regulations on insulation is money well spent it gives a lot back in returns.

If you are installing loft insulation as part of a roof renovation project where more than 25 per cent of the roof is being renewed then the level of insulation should meet the standards required by building regulations approved documents. Summary of flat roof building regulations.