Velux and skylight installation across Brighton — roof windows, roof lights and dormer work, correctly flashed into your roof covering and fully weathertight. From loft conversions to kitchen extensions, serving Brighton and East Sussex.
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Velux and skylight installation in Brighton typically costs £1,200–£3,000 per window installed, depending on size, roof type and access. Dormer window work is priced per scope. Correct flashing into the surrounding tile or slate is what keeps the installation weathertight — and where cheap installs fail.
Supply and installation of Velux and equivalent roof windows into pitched roofs, correctly flashed to the tile or slate profile. £1,200–£3,000 per window installed depending on size and access.
Flat and pitched roof lights for extensions and flat-roofed sections, bringing light into kitchens and single-storey additions. Correctly integrated with the GRP or membrane covering.
Dormer construction and repair — including the cheeks, roof and flashing — for loft conversions and to add headroom and light. Priced per scope after survey.
Replacing failed or dated roof windows, and re-flashing leaking installations that were fitted with the wrong flashing kit — a common cause of the leaks we're called to fix.
Brighton's tall Victorian and Edwardian terraces — Hanover, Fiveways, Preston Park, the Hove streets — are prime loft-conversion stock, and roof windows are central to almost every conversion. These properties usually have clay plain tile or slate, and the flashing has to match: a Velux flashed with a tile kit into a slate roof leaks. We flash every roof window to the actual covering, which on Brighton's period stock means understanding both clay and slate detailing.
In Brighton's conservation areas — Brunswick, Kemp Town, Hanover, Montpelier — roof windows on visible elevations may be restricted or require conservation-style conservation roof windows that sit flush with the roof line. On listed buildings, roof windows usually need Listed Building Consent. We advise on what's permitted for your address and can fit conservation-profile windows where a standard Velux wouldn't be approved.
Brighton's wind-driven coastal rain tests every roof window installation. A window flashed with the wrong kit, or with the flashing improvised rather than the manufacturer's matched kit, will leak in the first serious south-westerly — and we're regularly called to fix exactly this. We use the correct manufacturer flashing matched to your covering profile, which is the difference between a weathertight window and a recurring leak on Brighton's exposed roofs.
Many Brighton loft conversions use dormers as well as roof windows to gain headroom and floor area, particularly on the steeper-pitched Victorian roofs. Dormer construction is more involved than a roof window — the cheeks, roof and multiple flashing junctions all have to be weathertight. We build and repair dormers with the same attention to flashing detail, because dormers have more junctions to fail than a simple roof window and need every one done right.
Brighton's coastal light is one reason roof windows are so popular here. The city's position on the south coast gives it notably bright, clear light — a genuine draw for the artists and designers who fill its studios — and roof windows capture that light in a way vertical windows can't, flooding loft rooms and extensions from above. On the north-facing rear slopes common to Brighton's terraces, roof windows bring in the soft, even north light that studios and home offices prize. On south-facing slopes, they can bring in more heat and glare, so we advise on solar-control glazing and, where needed, integrated blinds to manage the bright coastal sun. Positioning matters too: getting the window placed for the light, the view and the room below is part of the job. This attention to how the window works with Brighton's light — not just whether it's weathertight — is what turns a functional roof light into a room-transforming one, and it's a conversation we have on every installation.
| Velux roof window (installed) | £1,200 – £3,000 |
| Roof light (flat roof) | £1,000 – £2,500 |
| Dormer repair | per scope |
| Dormer construction | from £4,000 |
| Reflash existing window | £300 – £700 |
| Conservation-profile window | add per spec |
Indicative Brighton pricing. Every quote follows a free survey. Prices include VAT where applicable.
Key fact: Roof windows installed into a pitched roof must be flashed using the manufacturer's flashing kit matched to the covering profile — Velux's own installation guidance stresses that using the correct flashing for tile or slate is essential to a weathertight seal, and the commonest cause of leaks is a wrong or improvised flashing.
No call-out fee · Free written quote · NFRC registered
“Two Velux windows into our slate loft conversion. They used the correct slate flashing kit — explained the previous quote had specced the wrong one. Weathertight through every storm since. Proper knowledge.”
“Roof light into our kitchen extension, integrated with the GRP flat roof. Clean install, perfectly sealed, transformed the room with light. Tidy and professional throughout.”
“They fixed a leaking Velux the previous installer botched — wrong flashing, as they suspected. Re-flashed it correctly and it's been dry since. Wish we'd used them first time.”
Whether you need a new rooflight, a replacement or just a re-flash comes down to a few clear signs.
When it isn’t the answer: If your existing Velux is sound and only the flashing has failed, re-flashing it is far cheaper than a full replacement Read the full guide.
We confirm position, size and the right flashing kit for your roof covering and pitch.
The opening is formed and trimmed, keeping the roof structure sound and weathertight as we go.
The rooflight is fitted and flashed with the correct kit for tile or slate, then fully weatherproofed.
We make good the internal reveal, clear up and issue the written guarantee.
| Job | Typical duration |
|---|---|
| Replace a like-for-like Velux | Half to a full day |
| Re-flash an existing rooflight | Half a day |
| Install one new rooflight | 1 day |
| Install two or more (loft) | 1–2 days |
| Upgrade to larger unit | 1–2 days |
rooflight work needs a dry window to keep the opening watertight, so we plan installs around the forecast.
most rooflight work is reached from a tower with internal working room; higher roofs need scaffold and edge protection. Scaffold is specified for higher roofs, multiple units, or where safe external edge protection is required — always itemised in your written quote, never a hidden extra, and we arrange it.
Pavement scaffold and skip permits in Brighton go through Brighton & Hove City Council; allow a few working days on tight, parked streets like the Regency terraces of Kemp Town, the tight Victorian streets off Lewes Road and the seafront squares of Hove.
Our workmanship is guaranteed for 10 years in writing, and it’s transferable if you sell.
If a fault appears in covered work, we come back and put it right — no quibbling, no re-charge.
A day or so per rooflight with some internal dust as the opening is formed — we sheet the room and clear up fully. You don’t need to be home for external work — we just need power and access agreed in advance.
We fit in most conditions but plan the opening-up around dry spells and never leave a roof open overnight. Brighton's coastal position brings salt-laden wind, strong UV and driving rain off the Channel, which is hard on exposed roofs and tends to speed up wear.
Velux and skylight installation in Brighton typically costs £1,200–£3,000 per window, depending on size, roof type and access. Flat roof lights are £1,000–£2,500. Dormer work is priced per scope. Correct flashing to your covering is what keeps it weathertight.
The commonest cause is the wrong flashing kit — a window flashed for tile fitted into a slate roof, or improvised flashing instead of the manufacturer's matched kit. Brighton's wind-driven coastal rain finds any weakness. We use the correct kit matched to your covering, and we're regularly called to fix others' leaking installs.
Roof windows are often permitted development, but in conservation areas — Brunswick, Kemp Town, Hanover — windows on visible elevations may be restricted, and listed buildings usually need Listed Building Consent. We advise on what's permitted for your address and can fit conservation-profile windows where needed.
Yes, it's one of our most common jobs. Brighton's tall Victorian and Edwardian terraces are ideal loft-conversion stock, and roof windows are central to most conversions. We flash each window to the actual covering — clay tile or slate — which is essential on the city's period roofs.
A roof window sits flush in the roof slope; a dormer projects out, adding headroom and floor area. Dormers suit Brighton's steeper Victorian roofs where headroom is tight, but they're more involved — the cheeks, roof and multiple flashing junctions all need to be weathertight. We build and repair both.
Yes. We replace failed or dated roof windows and re-flash leaking installations — often ones fitted with the wrong flashing kit. If your Velux leaks in driving rain, the flashing is the usual culprit, and re-flashing correctly is frequently cheaper than you'd expect.
On visible elevations in Brighton's conservation areas, and on listed buildings, standard roof windows may not be approved. Conservation-profile roof windows sit flush with the roof line and have a central glazing bar to suit period character. We advise on what your address requires and fit conservation windows where needed.
Free survey, written quote, no call-out fee. NFRC registered and fully insured, with a 10-year guarantee on all work across Brighton and East Sussex.
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We provide velux & skylight installation in these areas, matched to each location’s housing stock and roof types. Tap your area for local detail, or call 01273 973 996 for a free quote.
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