Rooflight upstands & kerbs in Truro: what is involved?
Thinking about rooflight upstands & kerbs in Truro? The short answer: insulated kerbs built and waterproofed to suit your rooflight. The longer answer depends on your roof, which is why we survey before we price.
Many South West towns mix Georgian and Victorian terraces with modern estates, so the right product differs street by street. In Truro, as anywhere, rooflight upstands & kerbs are the usual choice for new flat-roof openings and rooflight replacements.
Truro is the main town we list in Cornwall; we also cover nearby Falmouth and Redruth.
Options we can specify in Truro
- Internal plaster-box linings
- Timber upstands with insulation
- Upstand repairs and rebuilds
- Upstands to suit single-ply, felt, GRP or liquid roofs
- Raised upstands for deep green or ballasted roofs
- Fixings and falls agreed with the rooflight maker
- Matched to your roof covering
What to check first
- Upstand size must match the unit within a tight tolerance
- Minimum upstand height is set by the rooflight manufacturer — commonly 150 mm above the finished roof
Consents for rooflight upstands & kerbs in Truro
English householder permitted development (Class C) normally covers rooflights that stand no more than 0.15 m proud of the roof plane and stay below the highest part of the roof. Listed buildings need listed building consent, flats have no householder permitted development rights, and an Article 4 direction can remove the rights in some conservation areas.
Building Regulations Approved Document L sets a limiting U-value of 2.2 W/m²K for new or replacement rooflights in existing homes, measured in the horizontal plane; roof windows need 1.4 W/m²K or a Band B energy rating. The Future Homes and Buildings Standards, published in March 2026, apply from 24 March 2027 and keep the 2.2 W/m²K limit for rooflights.
See our building regulations guide for U-values, glazing limits and self-certification.
What do rooflight upstands & kerbs cost in Truro?
Prices below are shown including and excluding VAT. In Truro, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or raised upstand | £715 – £1,195 | £595 – £995 |
| Standard insulated upstand Typical | £475 – £715 | £395 – £595 |
| Small upstand on new roof | £355 – £475 | £295 – £395 |
How the job runs
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Truro address.
- Measure and check. A surveyor visits Truro, measures and checks structure and access.
- Agree the quote. You approve the specification and price before anything is ordered.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Rooflight upstands & kerbs near Truro
Other services in Truro
Questions about rooflight upstands & kerbs in Truro
Can I build the upstand myself?
Your builder can, to our drawing. We check it before the rooflight is fitted, because the unit must sit square and level.
Why is my rooflight cold around the edge?
Usually an uninsulated upstand. Insulating the kerb and lining the reveal fixes most cold spots.
Can an old upstand be reused?
If it is sound, square, insulated and the right size. Often it is cheaper to rebuild than adapt.
Do I need to be at home for the survey in Truro?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Do you offer rooflight upstands & kerbs in Truro?
Yes. We carry out rooflight upstands & kerbs in Truro and across Cornwall. Send your postcode and we will offer a survey date when we reply.
