Roof Insulation Regulations

The higher the r value the better the thermal performance of the insulation.

Roof insulation regulations.

How to insulate a roof. Building regulations for insulating a roof. Browse product options or contact your local insulfoam rep to help you quickly pick the best products to simplify your building envelope needs and fit your project budget all with one supplier. Summary of flat roof building regulations.

Heat rises and therefore the building regulations requirements for heat loss through roofs are more stringent than those for walls. If the new roof covering is going to be different than the old one and this will affect the roof in the event of a fire. Having the correct amount of attic insulation can help you maintain a comfortable temperature throughout your home and help save money on your energy bills plus prevent major issues like ice dams in the winter. Insulation can be placed between the ceiling joists.

Minimum insulation r value requirements non residential above roof deck. The definition of a thermal element does not include windows doors roof windows or rooflights. The table below shows what levels of insulation are cost effective for different climates and locations in the home. R value is a measure of insulation s ability to resist heat traveling through it.

The limiting u value the maximise u value which cannot be exceeded required under current building regulations for the roof is 0 20w m. 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.