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RooflightInstallers.co.uk
Lewes · BN7 · East Sussex

Rooflight upstands & kerbs in Lewes

Replacing an old dome or a failed rooflight often means the kerb underneath has to change too: it may be rotten, too low for the new unit or the wrong size. We strip back what is needed, build a new upstand in Lewes to the new unit's dimensions, insulate it and dress the roof covering up to it. Where only part of the kerb has failed, we say so and price the smaller repair. The scope is set out in a written quote before work starts.

Guide price from £245 · Labour and materials, rooflight not included

Lewes guide prices

Timber upstand

£245 – £445including VAT at 20%

Treated timber kerb built square and level to the maker's size

Insulated upstand

£445 – £845including VAT at 20%

Kerb with insulation and the roof membrane turned up and dressed

Large or with trimming

£845 – £1,445including VAT at 20%

Bigger kerbs or where joists need trimming first

Guide ranges for labour and materials, rooflight not included. Your price is fixed in a written quote after we have seen photos or surveyed. Scaffold, access towers or a crane are priced separately if the job needs them, and building control fees, where a job needs them, are shown as their own line.

Areas around Lewes we cover

Covering Lewes means covering the people who live and work there, not a single postcode. We take on domestic and commercial jobs in BN7, BN8 and BN10, and are happy to quote further out in Rottingdean and Peacehaven. If your address sits between towns, tell us and we will confirm whether it falls in our normal area or needs travel set out separately on the quote.

Included in the work

  • Kerb sized from the maker's drawing, internal and external dimensions both checked
  • Fall built into the kerb where the rooflight needs one
  • Treated timber frame fixed down to the deck and joists
  • Fall built in or level — We confirm whether your rooflight needs the kerb to provide a fall or should sit level.
  • Size tolerance on the kerb — We build kerbs to a tight tolerance because rooflight glass is made to order and cannot be trimmed on site.

Fitting your rooflight upstand, step by step

The fitters measure twice before cutting: the opening, the rooflight's kerb size and the finished roof level. The kerb is built, packed level or to the maker's fall, insulated and weathered into the roof covering. You are left with an upstand ready for the rooflight, and a note of the sizes it was built to.

Planning and building rules in England

England's rules in short: permitted development usually covers a rooflight on a house roof provided it doesn't stick out more than 0.15 m or rise above the ridge, though a listed building always needs consent and some streets have Article 4 directions. Building regulations apply to new openings, and replacements go through building control; as we are not registered with a competent person scheme, we use a building notice and show the fee on the quote. The energy limit for rooflights in existing homes is 2.2 W/m²K, and the 2026 Approved Document L, in force from 24 March 2027, keeps that figure.

Help us quote accurately

Each detail you send takes a question off our list. Photos inside and out show the opening and the ceiling. Rough measurements tell us the unit size. The roof covering tells us how it will be sealed in. Access notes tell us whether a tower or scaffold is needed. A product link, if you have one, lets us check it against the opening. Your postcode, BN7 or nearby, confirms travel.

Common questions in Lewes

Do you make good inside after fitting?

Yes, where the quote includes it. Internal finishing usually means lining the reveal with plasterboard, taping or skimming, and fitting trim where it meets the ceiling. Some people prefer their own plasterer or decorator to finish off, which is fine. The written quote spells out exactly where our work stops, so nobody is left guessing about who does what once the unit is in.

Do you need scaffolding to fit a rooflight?

Not always. Single-storey roofs can often be reached safely with ladders, a tower or edge protection. Higher roofs, steep pitches and large units usually need scaffold or a mobile platform, and heavy glass may need a crane. We assess access from your photos or at the survey, and any scaffold or lifting cost is shown as its own line on the written quote.

Do you offer trade rates for builders and roofers?

We carry out subcontract fitting for builders, roofers, extension companies and commercial contractors. Pricing is per job or per schedule of units, agreed in writing before we start. We can work to your programme, fit on your upstand or build our own, and leave the opening ready for the next trade. Send drawings or a unit schedule and we will come back with a trade quote.

For a free, no-obligation quote in Lewes, use the form or call us with the details of your roof.

Rear extension at dusk with lit rooflights and a roof lantern
Ready when you are

Upstands & kerbs in Lewes

Send photos and rough sizes, or ask for a survey for install work. One fixed written price before anything starts.

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