Flat Roof Insulation Regulations Uk

Construction specifications for house extensions new builds flat conversions loft conversions garage conversions and garage builds.

Flat roof insulation regulations uk.

Cold flat roof insulation. When constructing a cold flat roof the thermal insulation layer is positioned underneath the structural decking. Secondly it s important to understand how to keep it airtight and prevent condensation. Beyond building regulations guidance.

Ventilating a flat roof. It is suitable for use with any hot applied waterproofing system including torch on and any bitumen compatible single ply membrane system. Lots of traditional flat roofs are of the cold roof construction type. In bs 6229 a roof is defined as flat if it has an overall pitch of 10 degrees or less.

The two variations of flat roof. How are flat roofs defined. Make sure your comply with flat roof building regulations. 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.

With a flat roof this issue does not arise but the u value constraint and the amount of insulation needed is just the same. Depending on where you live in the uk. Summary of flat roof building regulations. If you are replacing more than 25 of the roofing area then you will also need to replace the thermal insulation.

This guidance relates to the planning regime for england. 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. Firstly it is always more economical to insulate a flat roof when you are replacing the roof covering anyway. Roof stores stock a range of klober flat roof ventilation solutions designed specifically to meet the criteria above.

This is an introductory guide and is not a definitive source of legal information.