What do rooflight upstands & kerbs in Formby involve?
Our rooflight upstands & kerbs service in Formby 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.
Rear kitchen extensions on North West semis often have small domes from decades ago that leak or have yellowed. In Formby, as anywhere, rooflight upstands & kerbs are the usual choice for new flat-roof openings and rooflight replacements.
We work across Merseyside, including Formby, and in neighbouring towns such as Maghull and Southport. Access, parking and how the glass reaches the roof are all checked at the survey.
Choices for your Formby project
- Internal plaster-box linings
- Upstands to suit single-ply, felt, GRP or liquid roofs
- Proprietary insulated kerbs
- Upstand repairs and rebuilds
- Timber upstands with insulation
- Fixings and falls agreed with the rooflight maker
- Correct height above the finished roof
What to check first
- Insulation continuity around the upstand affects condensation
- Upstand size must match the unit within a tight tolerance
Do you need permission in Formby?
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.
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.
See our building regulations guide for U-values, glazing limits and self-certification.
What do rooflight upstands & kerbs cost in Formby?
Guide prices for rooflight upstands & kerbs in Formby 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
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Formby address.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Neighbouring towns
Related work in Formby
Rooflight upstands & kerbs in Formby: questions
Does every rooflight need an upstand?
Flat and dome rooflights do. Pitched roof windows use flashing kits instead.
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.
Is the survey in Formby free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
Can you work alongside my builder in Formby?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
