Roof Insulation Requirements Uk

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.

Roof insulation requirements uk.

Find out more. Column a is for extensions where the existing dwelling s walls and roof u values are worse than 0 70 w m k in the walls and worse than 0 25 w m k in the ceiling. With a goal of reducing energy consumption loft insulation is becoming an increasingly important issue in the uk today the uk government s attention turned to the idea of helping home owners and construction industry build energy efficient homes as a way to conserve energy on a large scale. Pipes water tank and loft hatch.

If 180mm is to be installed then 100mm board might be introduced between the rafters there has to be a minimum 25mm air gap between the insulation and the underside of the tiles or slates with an 80mm board running across the rafters. Insulation can be placed between the ceiling joists. The saint gobain insulation uk product portfolio has a solution to help meet the requirements of the scheme. Insulating between the joists of your loft will keep your house warmer but make the roof space above colder.

Building regulations and standards set the levels of thermal insulation required when carrying out building work either for new build or refurbishment projects. Again the thickness will vary depending on the material you choose to use. Flat roof insulation always requires professional insulation and damp roofs require professional assessment before work can be carried out. If the roof has no ceiling then the insulation can be placed between the rafters and ventilation maintained as described above in which case the ridge should also have vent tiles installed to allow for through.

With a warm roof the usual process is to split the insulation into two layers. The below drawing shows the u value requirements set out for new properties in the building regulations for each element walls floors and roofs.