Rooflight upstands & kerbs in Rhondda: what is involved?
Our rooflight upstands & kerbs service in Rhondda 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.
Wales sees a lot of wind-driven rain, particularly in the west, so upstand height and flashing laps matter more than anywhere. Typical uses for rooflight upstands & kerbs include roofs where the old kerb is low, cold or leaking.
We cover all of Rhondda and the CF42 district, and nearby Tonypandy and Aberdare.
What you can choose
- Proprietary insulated kerbs
- Upstand repairs and rebuilds
- Internal plaster-box linings
- Raised upstands for deep green or ballasted roofs
- Timber upstands with insulation
- Correct height above the finished roof
- Built square to the rooflight size
Before you order: points to check
- Membrane compatibility with the rooflight's sealants
- Upstand size must match the unit within a tight tolerance
Do you need permission in Rhondda?
Planning rules in Wales are tighter than in England for rooflights: Class C rights do not apply in conservation areas, National Parks or AONBs, so a rooflight there needs planning permission. A side-facing rooflight within 10.5 m of the boundary must be obscure-glazed, and non-opening unless the opening part is more than 1.7 m above the floor.
Welsh Building Regulations expect new or replacement rooflights to reach 2.2 W/m²K and roof windows 1.4 W/m²K or a Band B rating. A revised Welsh Approved Document L takes effect on 4 March 2027; rooflights in new dwellings stay at 2.2 W/m²K.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Rhondda
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
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Rhondda address.
- Survey. We measure the opening, check the roof build-up and agree the options.
- 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
Related work in Rhondda
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.
Can an old upstand be reused?
If it is sound, square, insulated and the right size. Often it is cheaper to rebuild than adapt.
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.
Do I need to be at home for the survey in Rhondda?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Is the survey in Rhondda free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
