Yes. A new or replacement warm roof needs Building Regulations approval in England, covering structure, thermal performance and moisture control. A renovated roof is generally expected to reach around 0.16 W/m²K, and building control inspects the work before issuing a completion certificate.
What does building control check?
- Structure (Part A): the existing walls and joists must carry the extra weight
- Energy performance (Part L): the insulation must reach the required U-value
- Moisture (Part C): the build-up must avoid interstitial condensation
- Fire (Part B): the roof covering must suit its distance from the boundary
Does a conservatory roof replacement need approval?
Yes. Swapping a glazed roof for a solid one generally removes the conservatory exemption, because the roof is no longer mainly glass. The roof is then treated like an extension, so a building notice or full plans application is needed.
What happens if the work is not signed off?
Without a completion certificate, building control can require work to be opened up, and solicitors will ask for it when you sell. Getting approval before starting avoids both problems.
Wednesfield Trade Windows is a family-run, Certass registered installer, and the survey confirms what needs sign-off on your property. See our warm roofs for more detail.
Thinking about a warm roof? We supply and fit warm roofs across Wolverhampton and the surrounding area, and you deal directly with us, the owners. Call 01902 633355, message us on WhatsApp, or request a quote.