These ranges cover most typical jobs. They come from the same figures our guide price tool uses. Prices include VAT at 20%. Trade fitting rates are shown plus VAT.
What moves a price up or down: the size and weight of the glass, whether a sound upstand is already there, the roof covering, how high the roof is and how we get to it, and how much making good is needed inside.
Fitting & replacement
| Job and tier | Guide range | Typical scope |
|---|---|---|
| Fit-only rooflight installation Onto a ready upstand | £445 – £795 | Customer-supplied unit up to about 1.5 m², fitted to a prepared kerb, sealed and trimmed |
| With a new upstand | £795 – £1,295 | Insulated timber upstand built, membrane turned up and dressed, unit fitted and sealed |
| Large or heavy unit | £1,195 – £2,145 | Extra hands or lifting gear, larger openings, fixed or opening units |
| Rooflight replacement Like-for-like swap | £1,095 – £1,695 | Old dome or unit removed and disposed of, new glass rooflight fitted to the existing sound kerb |
| New upstand and swap | £1,695 – £2,645 | Old kerb taken off, new insulated upstand built, roof covering made good, new unit fitted |
| Opening or large unit | £2,645 – £4,545 | Electric or larger replacement, including making good inside |
| New rooflight in an existing roof Small fixed unit | £2,295 – £3,345 | Opening cut, joists trimmed, upstand built, roof covering made good, plasterboard reveals ready for decoration |
| Medium fixed unit | £3,345 – £4,795 | As the small unit, with a larger opening up to about 1 × 2 m and additional trimming |
| Large or opening unit | £4,795 – £7,795 | Bigger structural work or an electric opening unit |
| Rooflight upstands & kerbs Timber upstand | £245 – £445 | Treated timber kerb built square and level to the maker's size |
| Insulated upstand | £445 – £845 | Kerb with insulation and the roof membrane turned up and dressed |
| Large or with trimming | £845 – £1,445 | Bigger kerbs or where joists need trimming first |
| Rooflight glass replacement Small sealed unit | £445 – £795 | Misted or cracked unit up to about 1 m² measured, made and refitted |
| Medium sealed unit | £795 – £1,295 | Units up to about 2 m², or toughened and laminated |
| Large or specialist | £1,295 – £2,395 | Triple glazed, solar-control or heavy units needing lifting gear |
| Rooflight leak repairs Diagnostic visit | £145 – £195 | Roof and inside inspected, cause found, written repair price |
| Reseal and re-flash | £295 – £645 | Failed sealant and flashing taken out, joints cleaned, resealed and taped |
| Upstand or membrane repair | £645 – £1,445 | Rotten kerb section or roof membrane at the upstand repaired |
Flat roof rooflights
| Job and tier | Guide range | Typical scope |
|---|---|---|
| Flat rooflight installation Small fixed | £995 – £1,495 | Double-glazed fixed unit up to 1000 × 1000 mm, fitted to a ready upstand |
| Medium fixed | £1,495 – £2,295 | 1000 × 1500 to 1000 × 2000 mm, double or triple glazed |
| Large fixed | £2,295 – £4,095 | Bigger units, solar-control glass, two-person lift or lifting gear |
| Frameless rooflight installation Small frameless | £1,445 – £2,145 | Up to about 1000 × 1000 mm, hidden frame inside the upstand |
| Medium frameless | £2,145 – £3,345 | Up to about 1000 × 2000 mm |
| Large frameless | £3,345 – £5,395 | Large single panes, lifting gear on the day |
| Electric opening rooflight installation Small opening | £2,645 – £3,595 | Up to about 1000 × 1000 mm with actuator, rain sensor and switch or remote |
| Medium opening | £3,595 – £4,795 | Larger units, wall switch and remote |
| Large opening | £4,795 – £6,945 | Big or heavy units, extra actuators |
| Walk-on rooflight installation Up to 1 m² | £3,345 – £4,545 | Laminated walk-on unit with anti-slip finish, fitted level with the terrace |
| Up to 2 m² | £4,545 – £7,195 | Larger walk-on glazing |
| Large or bespoke | £7,195 – £11,995 | Big panes, structural calculations, lifting gear |
| Sliding rooflight installation Compact sliding | £7,795 – £10,795 | Motorised sliding unit for a stair or hatch opening |
| Standard sliding | £10,795 – £15,595 | Larger opening onto a roof terrace |
| Large sliding | £15,595 – £22,795 | Big spans, lifting gear and longer installs |
| Roof access hatch installation Entry-level hatch | £1,795 – £2,995 | Polycarbonate or entry-level hinged hatch on gas struts, fitted to a new or existing upstand |
| Glazed manual hatch | £3,095 – £4,695 | Double-glazed hinged hatch on gas struts, upstand and weathering |
| Electric glazed hatch | £9,345 – £12,595 | Push-button glazed hatch with rain sensor; electrician's connection quoted separately |
| Roof lantern installation About 1 × 2 m | £3,095 – £4,545 | Aluminium lantern, double glazed, fitted and glazed on a ready upstand |
| About 1.5 × 3 m | £4,545 – £7,195 | Mid-size lantern, solar-control glass options |
| 2 × 4 m and over | £7,195 – £11,395 | Large lanterns, lifting gear on the day |
Pitched roofs & lofts
| Job and tier | Guide range | Typical scope |
|---|---|---|
| Pitched roof window installation Standard window | £845 – £1,395 | Centre-pivot roof window with flashing kit, tiles cut and refitted, inner lining |
| Larger or top-hung | £1,395 – £2,045 | Bigger or top-hung windows, or two in the same roof |
| Electric or pair | £2,045 – £3,095 | Electric or solar windows, or a matched pair with blinds |
| Loft conversion roof windows Pair of windows | £1,795 – £2,745 | Two roof windows into a loft room, flashings and linings |
| Three or four windows | £2,745 – £4,545 | Bigger loft rooms or stairwells |
| Balcony or combination | £4,545 – £7,195 | Balcony-style or stacked window combinations |
| Conservation rooflight installation Small conservation unit | £1,145 – £1,695 | Low-profile unit with glazing bar, slate or tile flashing |
| Medium unit | £1,695 – £2,495 | Larger opening, lead or matching flashings |
| Large or bespoke | £2,495 – £3,845 | Larger or made-to-order units for listed or sensitive roofs |
| Sun tunnel installation Short rigid tube | £595 – £845 | Around 250 mm tube, short straight run through a loft |
| Wider or longer run | £845 – £1,145 | Around 350 mm tube or longer runs with bends |
| Flat roof or complex | £1,145 – £1,745 | Flat roof kits, long runs or two tubes |
Commercial & trade
| Job and tier | Guide range | Typical scope |
|---|---|---|
| Commercial rooflight installation Per standard unit | £1,095 – £1,895 | Flat glass or polycarbonate unit on an existing kerb, as part of a multi-unit job |
| Per large unit | £1,895 – £3,345 | Larger or ventilating units, edge protection in place |
| Programme of works | £3,345 – £7,195 | Phased replacement across a building, priced from a survey |
| Dome rooflight replacement Like-for-like dome | £395 – £695 | Old dome taken off, new multi-skin dome fixed to the sound existing kerb |
| Dome with kerb adaptor | £695 – £1,195 | New dome where the kerb needs an adaptor or packing |
| Upgrade to glass | £1,095 – £1,695 | Dome swapped for a double-glazed glass rooflight on the existing sound kerb, as in our replacement service |
| Smoke vent rooflight installation Vent swap | £3,595 – £6,595 | Like-for-like certified vent and actuator, connected to the existing controls and commissioned by a smoke-control specialist |
| Vent with new controls | £5,745 – £9,595 | Vent plus new control panel and detection, commissioned by a smoke-control specialist |
| Multiple vents | £9,595 – £17,995 | Several stairwells or larger systems, priced from a survey |
| Trade rooflight fitting Per flat rooflight | £295 – £495 + VAT | Fit a supplied unit to your prepared upstand, sealed and trimmed |
| Per roof lantern | £695 – £1,495 + VAT | Assemble and glaze a supplied lantern on your upstand |
| Two-person day rate | £445 – £645 + VAT | Fitting team for multi-unit or mixed work |
Not included in the ranges
- Scaffold or access towers, where a roof can't be reached safely from a ladder and roof edge protection
- A crane or powered glass lifter for very large or heavy units
- The final electrical connection for electric rooflights and hatches, which is made by a qualified electrician and quoted as a separate line
- Building control or building warrant fees, where the job needs them
- Roof repairs beyond the area around the rooflight
- Decorating after plastering
If your job needs any of these we show them as separate lines on the written quote, so nothing appears later.
