Rooflight upstands & kerbs for Frome: the essentials
Thinking about rooflight upstands & kerbs in Frome? 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.
Western coasts take wind-driven rain, so we pay close attention to upstand height and flashing laps on exposed roofs. Think of rooflight upstands & kerbs for new flat-roof openings and rooflight replacements.
We work across Somerset, including Frome, and in neighbouring towns such as Warminster and Trowbridge. Access, parking and how the glass reaches the roof are all checked at the survey.
Options we can specify in Frome
- Raised upstands for deep green or ballasted roofs
- Internal plaster-box linings
- Timber upstands with insulation
- Proprietary insulated kerbs
- Upstand repairs and rebuilds
- Membrane dressed up and sealed
- Matched to your roof covering
Before you order: points to check
- Membrane compatibility with the rooflight's sealants
- Insulation continuity around the upstand affects condensation
Planning and building rules for Frome
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. 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.
Under Approved Document L, a rooflight added to an English home must achieve at least 2.2 W/m²K (horizontal plane), and a roof window 1.4 W/m²K or Window Energy Rating Band B. 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.
See our building regulations guide for U-values, glazing limits and self-certification.
Rooflight upstands & kerbs prices in Frome
Guide prices for rooflight upstands & kerbs in Frome 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 |
The process, step by step
- Tell us what you have. Send the BA11 postcode, a rough size and a couple of photos.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- 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 Frome
Other services in Frome
Common questions
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.
What roof coverings do you work with?
Single-ply, EPDM, felt, GRP and liquid-applied systems — or we coordinate with your roofer.
Does every rooflight need an upstand?
Flat and dome rooflights do. Pitched roof windows use flashing kits instead.
Can you work alongside my builder in Frome?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Will I need planning permission in Frome?
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.
