What do rooflight upstands & kerbs in Sidcup involve?
Our rooflight upstands & kerbs service in Sidcup covers insulated kerbs built and waterproofed to suit your rooflight. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Party walls are a fact of life in London terraces, and rooflights close to a shared wall need detailing that keeps the neighbour's side dry too. Rooflight upstands & kerbs suit roofs where the old kerb is low, cold or leaking.
Neighbouring towns include Bexley (4 km) and Welling (4 km). We offer a survey date when we reply to your enquiry.
What you can choose
- Raised upstands for deep green or ballasted roofs
- Internal plaster-box linings
- Proprietary insulated kerbs
- Timber upstands with insulation
- Upstand repairs and rebuilds
- Correct height above the finished roof
- Insulated to avoid a cold bridge
What to check first
- Membrane compatibility with the rooflight's sealants
- Upstand size must match the unit within a tight tolerance
Planning, building control and Sidcup
Most rooflights on English houses do not need planning permission, provided they keep within 150 mm of the roof surface and below the ridge line. 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.
For English homes the energy rules ask for rooflights of 2.2 W/m²K or better and roof windows of 1.4 W/m²K (or WER Band B); most modern double glazed units meet both. In an extension, glazing including rooflights is normally limited to 25% of the new floor area plus any windows or doors the extension covers, unless a whole-house calculation shows otherwise.
Read the planning permission guide before you commit to a design.
Rooflight upstands & kerbs prices in Sidcup
Prices below are shown including and excluding VAT. In Sidcup, 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 |
The process, step by step
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Sidcup address.
- Measure and check. A surveyor visits Sidcup, measures and checks structure and access.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Nearby towns
Related work in Sidcup
Questions about rooflight upstands & kerbs in Sidcup
What roof coverings do you work with?
Single-ply, EPDM, felt, GRP and liquid-applied systems — or we coordinate with your roofer.
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.
How high should a rooflight upstand be?
High enough to meet the rooflight manufacturer's minimum above the finished roof surface — commonly 150 mm. On roofs with deep finishes, such as green roofs, it needs to be taller.
How do I book a survey in Sidcup?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Do I need to be at home for the survey in Sidcup?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
