How we approach rooflight upstands & kerbs in Sunbury-on-Thames
Rooflight upstands & kerbs in Sunbury-on-Thames means insulated kerbs built and waterproofed to suit your rooflight. We cover the TW16 district and the rest of Surrey, with a survey before any price is fixed.
Across the South East, single-storey kitchen extensions on 1930s semis and post-war detached houses are where most flat rooflights and lanterns go. Think of rooflight upstands & kerbs for roofs where the old kerb is low, cold or leaking.
From Sunbury-on-Thames to Walton-on-Thames, Hampton and Ashford, Surrey, the same survey-first process applies: measure, specify, fix the price, then fit.
What you can choose
- Proprietary insulated kerbs
- Upstand repairs and rebuilds
- Timber upstands with insulation
- Internal plaster-box linings
- Upstands to suit single-ply, felt, GRP or liquid roofs
- Built square to the rooflight size
- Fixings and falls agreed with the rooflight maker
Things we check at survey
- Insulation continuity around the upstand affects condensation
- Upstand size must match the unit within a tight tolerance
Planning and building rules for Sunbury-on-Thames
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. 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.
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. 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 Sunbury-on-Thames?
Guide prices for rooflight upstands & kerbs in Sunbury-on-Thames 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 |
How the job runs
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits Sunbury-on-Thames, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Rooflight upstands & kerbs near Sunbury-on-Thames
Other services in Sunbury-on-Thames
Common questions
Does every rooflight need an upstand?
Flat and dome rooflights do. Pitched roof windows use flashing kits instead.
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.
Can you work alongside my builder in Sunbury-on-Thames?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do you offer rooflight upstands & kerbs in Sunbury-on-Thames?
Yes. We carry out rooflight upstands & kerbs in Sunbury-on-Thames and across Surrey. Send your postcode and we will offer a survey date when we reply.
