How we approach rooflight upstands & kerbs in South Croydon
Rooflight upstands & kerbs in South Croydon means insulated kerbs built and waterproofed to suit your rooflight. We cover the CR2 district and the rest of Greater London, with a survey before any price is fixed.
Many London roofs are reached only through the house or over neighbouring property, so lifting heavy glass is planned at survey rather than on the day. Typical uses for rooflight upstands & kerbs include roofs where the old kerb is low, cold or leaking.
We work across Greater London, including South Croydon, and in neighbouring towns such as Croydon and Purley. Access, parking and how the glass reaches the roof are all checked at the survey.
What you can choose
- Raised upstands for deep green or ballasted roofs
- Upstand repairs and rebuilds
- Timber upstands with insulation
- Internal plaster-box linings
- Proprietary insulated kerbs
- Insulated to avoid a cold bridge
- Built square to the rooflight size
What to check first
- Minimum upstand height is set by the rooflight manufacturer — commonly 150 mm above the finished roof
- Insulation continuity around the upstand affects condensation
Planning and building rules for South Croydon
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. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
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.
Our planning guide covers each nation in more detail.
What do rooflight upstands & kerbs cost in South Croydon?
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| 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 |
What happens next
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits South Croydon, measures and checks structure and access.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Nearby towns
Other services in South Croydon
Questions about rooflight upstands & kerbs in South Croydon
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.
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 South Croydon?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
How do I book a survey in South Croydon?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
