Flat roof insulation is a must-have for any home owner

R&D Roofing install large quantities of flat roof insulation to both domestic and commercial buildings.

Building regulations and requirements for flat roof insulation

Changes to Part L (Conservation of fuel and power) of Building Regulations came into force on 15 June 2022 in the form of two new Approved Documents. Part L has been slimmed down now into two volumes: Volume 1: Dwellings and Volume 2: Buildings other than dwellings.

As with all things, improvements to the environment are high on the agenda, and so there are now higher performance targets to be achieved nationally, These are, firstly for CO2 emissions to be reduced by 31% for dwellings and 27% for other buildings, and secondly, a new emphasis on low carbon heating systems.

This of course does not just apply to materials and construction in the main building, but also ensures that roof coverings to rooms are thermally insulated to a certain U-value (except those in unheated buildings). A typical product we may use is 120mm PIR rigid insulation which ensures that these requirements are met.


Flat roof insulation

Insulating a flat roof can either be carried out via a cold roof method or a warm roof method.

The warm roof method is when the insulation is laid on top of the roof substrate. This type of roof requires no ventilation at all.

The cold roof system is when the insulation is lifted between the joints. This type of roof needs to be ventilated to prevent condensation. R&D Roofing recommend upgrading your insulation where possible to all new flat roofs.

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