Flat Roof Insulation Regulations Uk

Make sure your comply with flat roof building regulations.

Flat roof insulation regulations uk.

This is an introductory guide and is not a definitive source of legal information. If you are thinking of installing insulation into a warm flat roof yourself the powerdeck u insulation board is specifically designed for this purpose. Cold flat roof insulation. Achieving a u value of 0 20w m meaning your roof will be better insulated than your walls will need 120mm thickness of rigid foam or 200mm of mineral wool or natural insulation.

The two variations of flat roof. In bs 6229 a roof is defined as flat if it has an overall pitch of 10 degrees or less. Construction specifications for house extensions new builds flat conversions loft conversions garage conversions and garage builds. If you are replacing more than 25 of the roofing area then you will also need to replace the thermal insulation.

Flat roofs are a less common sight in the uk owing to their typically higher maintenance requirements when compared to other forms of roof construction although they can be a versatile form of roof construction. This guidance relates to the planning regime for england. Beyond building regulations guidance. Roof stores stock a range of klober flat roof ventilation solutions designed specifically to meet the criteria above.

How are flat roofs defined. Lots of traditional flat roofs are of the cold roof construction type. Depending on where you live in the uk. With a flat roof this issue does not arise but the u value constraint and the amount of insulation needed is just the same.

When constructing a cold flat roof the thermal insulation layer is positioned underneath the structural decking. Firstly it is always more economical to insulate a flat roof when you are replacing the roof covering anyway. It is suitable for use with any hot applied waterproofing system including torch on and any bitumen compatible single ply membrane system. Secondly it s important to understand how to keep it airtight and prevent condensation.

Summary of flat roof building regulations.