What do rooflight upstands & kerbs in Coulsdon involve?
Our rooflight upstands & kerbs service in Coulsdon 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.
Mansard and loft conversions are common across London, and roof windows are often set out alongside dormers on the rear slope. In Coulsdon, as anywhere, rooflight upstands & kerbs are the usual choice for roofs where the old kerb is low, cold or leaking.
Coulsdon is around 21 km from central London, and we survey and fit throughout that part of Greater London, including the CR5 district.
Specification options
- Upstands to suit single-ply, felt, GRP or liquid roofs
- Upstand repairs and rebuilds
- Raised upstands for deep green or ballasted roofs
- Timber upstands with insulation
- Proprietary insulated kerbs
- Fixings and falls agreed with the rooflight maker
- Insulated to avoid a cold bridge
What to check first
- Minimum upstand height is set by the rooflight manufacturer — commonly 150 mm above the finished roof
- Membrane compatibility with the rooflight's sealants
Planning, building control and Coulsdon
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.
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. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
Our planning guide covers each nation in more detail.
Guide prices for Coulsdon
Guide prices for rooflight upstands & kerbs in Coulsdon are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| 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
- Tell us what you have. Send the CR5 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Coulsdon, measures and checks structure and access.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Nearby towns
Other services in Coulsdon
Common questions
Does every rooflight need an upstand?
Flat and dome rooflights do. Pitched roof windows use flashing kits instead.
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.
Why is my rooflight cold around the edge?
Usually an uninsulated upstand. Insulating the kerb and lining the reveal fixes most cold spots.
Is the survey in Coulsdon free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
How do I book a survey in Coulsdon?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
