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RooflightInstallers.co.uk
Guildford · GU1 · Surrey

Rooflight replacement in Guildford

If the replacement rooflight on your roof now is misted, discoloured, cracked or letting water in, replacing it is often simpler than people expect. The old unit comes out, we inspect the kerb or frame underneath, and we decide with you whether it can be reused or needs rebuilding. Then the new one goes in, sealed to the roof covering and finished inside. We handle this kind of rooflight replacement in Guildford and nearby, alongside new openings and fit-only work. Postcode GU1 and its neighbours are all within our cover.

Guide price from £1,095 · Supply & fit; building control notice fee extra in England and Wales

Guide prices in Guildford

Like-for-like swap

£1,095 – £1,695including VAT at 20%

Old dome or unit removed and disposed of, new glass rooflight fitted to the existing sound kerb

New upstand and swap

£1,695 – £2,645including VAT at 20%

Old kerb taken off, new insulated upstand built, roof covering made good, new unit fitted

Opening or large unit

£2,645 – £4,545including VAT at 20%

Electric or larger replacement, including making good inside

Guide ranges for supply & fit; building control notice fee extra in England and Wales. 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.

Covering GU1 and neighbouring districts

Distance is rarely the deciding factor. A roof in Godalming, 4 miles from Guildford, gets the same survey, the same written quote and the same fitting process as one in GU1, GU2 and GU4. What changes the price is the job itself: size of unit, roof type, access and lifting. Woking, around 6 miles out, is treated the same way.

What we check on a supplied unit

A damaged delivery is a frequent snag on fit-only work. Before the day, unpack a replacement rooflight, photograph it, and tell the seller about any cracks or scuffs, because claims are much easier made early. We will also ask for the model or a link, so we can read the maker's instructions and check the builder's opening size and the upstand height it expects. If everything lines up, we fit it. If not, we explain what needs changing first.

On the day, we cover

  • Old rooflight or dome unscrewed, lifted out and taken away for disposal
  • New unit bedded, fixed and sealed exactly as its maker shows
  • Packers, an adaptor or a new insulated upstand where the old kerb falls short
  • Inside finishes — We check the condition of the plaster and trim around the opening from inside.
  • Is the kerb worth keeping? — We decide whether the existing kerb can stay only after checking it for rot, height and squareness.

What happens on the day

On the day, you need to be in at the start and at the end. In between, the fitters get on with it. They will want the room below cleared where possible, a parking spot if you have one, and somewhere to set the unit down safely. After checking the opening and the upstand or flashing, they fix a replacement rooflight, seal it and finish the inside. Packaging and any old unit leave with them unless the quote says otherwise.

Planning and building rules in England

Two sets of rules matter in England. Planning: a rooflight on a house is normally permitted development if it projects no more than 0.15 m and stays below the highest part of the roof, but flats, listed buildings and Article 4 areas need checking. Building regulations: new openings need approval for the structure and energy performance, and a replacement is a controlled fitting. We are not registered with a competent person scheme, so we notify replacements to building control with a building notice and put the council's fee on the quote.

Getting a price from photos

What we cannot see, we have to guess, and guesses make quotes wider. So the more you send, the tighter the price. Useful: shots from the roof or garden, shots from the room underneath, a rough width and length, the roof finish, any access problems, and the product page if you have already ordered. Add the property postcode around GU1 and we will come back with a quote or a survey date.

Common questions in Guildford

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.

How long does fitting take?

Fitting a replacement rooflight into an existing, correctly sized opening is often a day's work. New openings take longer, because joists or rafters need trimming, an upstand or flashing has to be built or fitted, and the inside needs finishing. Large units that need lifting gear, and days lost to rain, can stretch things further. Your written quote gives a realistic estimate for your roof.

Do you cover Guildford?

Yes. Fitters travel to addresses in Guildford and the surrounding districts, including GU1. We do not run an office there; the survey and the fitting happen at your property. A few island and remote postcodes are covered by arrangement; if yours is one, we confirm travel and dates before quoting.

Ask for a quote for your Guildford roof. Survey dates are offered based on fitter availability once you are happy with the price.

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

Replacements in Guildford

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

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