Sliding rooflight installation across Greater London

Guide prices in Greater London

Compact sliding

£7,795 – £10,795including VAT at 20%

Motorised sliding unit for a stair or hatch opening

Standard sliding

£10,795 – £15,595including VAT at 20%

Larger opening onto a roof terrace

Large sliding

£15,595 – £22,795including VAT at 20%

Big spans, lifting gear and longer installs

Guide ranges for supply & fit. 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.

Towns we list in Greater London

Coverage in Greater London works by postcode, not by distance from an office. Give us the full postcode and we will confirm whether it is standard cover, as it is for most of England, or one of the few remote and island areas handled by arrangement. Either way, you get a written quote before any work is booked, with travel included in the price.

What's included

Cable routed to the motor, ready for the electrician's final connection, quoted as a separate line
Full open and close cycle checked before handover
Lifting plan for the unit, often with gear booked for the day
Power and safety stops — We confirm the power supply and the safety features before fitting day.
Guarding on the terrace — We look at how the roof terrace will be guarded before the rooflight is fitted.

Rules that apply in England

In England, a new rooflight opening generally needs building regulations approval because the roof structure is altered and the glazing must meet energy rules: 2.2 W/m²K for a rooflight in an existing home, or 1.4 W/m²K (or WER Band B) for a roof window. Planning is often not needed on a house: permitted development covers rooflights that stand no more than 0.15 m proud of the roof slope and sit below the highest part of the roof. Flats, listed buildings and areas with an Article 4 direction are different, so we check your address first.

Common questions in Greater London

What if my roof opening is the wrong size for the sliding rooflight?

We find out before the fitting day, not on it. If the opening is slightly out, it can usually be adjusted by trimming or by packing out the upstand. If it is a long way off, the choice is between altering the opening and changing the unit. Bear in mind that rooflights are often sold by builder's opening size rather than external size, so check which one your measurement refers to.

Does a rooflight need building regulations approval?

A new opening usually needs building regulations approval. A replacement is a controlled fitting: it must be self-certified by an installer registered with a competent person scheme or notified to building control. We are not registered with a scheme, so replacements we fit are notified to building control with a building notice, and the council's fee is shown on your quote.

What is included in the price?

The written quote lists it line by line. Typically that covers fitting labour, fixings, sealants, membrane or flashing materials, any upstand work, internal finishing if agreed, and taking away the waste. For supply and fit, the unit itself is included too. Scaffold, lifting gear and any third-party fees, where needed, are shown separately so you can see what each part of the job costs.

Sliding rooflight installation in Greater London