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RooflightInstallers.co.uk
Formby · L37 · Merseyside

Dome rooflight replacement in Formby

If the dome 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 dome rooflight replacement in Formby and nearby, alongside new openings and fit-only work. Postcode L37 and its neighbours are all within our cover.

Guide price from £395 · Supply & fit, per dome; building control notice fee extra on homes in England and Wales

Guide prices in Formby

Like-for-like dome

£395 – £695including VAT at 20%

Old dome taken off, new multi-skin dome fixed to the sound existing kerb

Dome with kerb adaptor

£695 – £1,195including VAT at 20%

New dome where the kerb needs an adaptor or packing

Upgrade to glass

£1,095 – £1,695including VAT at 20%

Dome swapped for a double-glazed glass rooflight on the existing sound kerb, as in our replacement service

Guide ranges for supply & fit, per dome; building control notice fee extra on homes 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.

Fitting across Formby and nearby

Jobs across L37, L38 and L29 are part of our normal cover for Formby. We are not an office on the high street. Our fitting teams come out to the property from wherever they are working that week. Neighbouring places such as Maghull and Southport are covered on the same terms, so a house on the edge of town is no harder to book than one in the centre.

Already bought your unit?

There are two ways to do this. Supply and fit means we source a dome rooflight that suits your roof and install it, so one company answers for both the product choice and the fitting. Fit-only means you buy the unit and we install it. With fit-only, the product warranty stays with the maker or seller, and our written guarantee covers the fitting work. Both routes get the same checks on the opening, the upstand and the maker's instructions before anything is fixed.

Included in the work

  • Kerb checked for rot, size and height before the new unit goes on
  • Adaptor or packing fitted where the old kerb needs it
  • New multi-skin dome or glass unit fixed and sealed
  • Upgrading to glass — We check whether the kerb suits a glass unit before recommending one.
  • Is the kerb sound? — We check each kerb for rot and movement before quoting a dome swap.

How a fitting day runs

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 dome rooflight, seal it and finish the inside. Packaging and any old unit leave with them unless the quote says otherwise.

Regulations for Formby properties

Replacing a rooflight in an English home is a controlled fitting: it has to be self-certified by a scheme-registered installer or notified to building control. We are not registered with a competent person scheme, so replacements we fit are notified with a building notice, and the new unit has to meet current energy limits. Adding a new one usually means a building regulations application, because joists or rafters are trimmed. On the planning side, most house rooflights are permitted development if they project 0.15 m or less; on a side slope the glass must be obscured and fixed unless the opening part is over 1.7 m above the floor.

Before you get in touch

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, L37 or nearby, confirms travel.

Common questions in Formby

Do you cover Formby?

Yes. Fitters travel to addresses in Formby and the surrounding districts, including L37. 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.

Will my new dome rooflight leak?

A correctly fitted unit should not. Leaks usually trace back to the detail around the frame: an upstand that is too low, a membrane or flashing that is not dressed properly, sealant applied to a damp surface, or water ponding against the kerb. We fit to the maker's instructions and check each of those points. The fitting carries a written workmanship guarantee, with its terms set out on your quote.

Can you replace an old dome without redoing the whole roof?

Usually, yes. If the existing kerb is sound, level and tall enough, a new unit can often sit on it with a fresh seal to the roof covering. If the kerb is rotten or too low, we rebuild it and patch the covering around it rather than stripping the whole roof. This is checked at the survey and included in the written quote, so you know the full scope first.

Tell us your postcode, L37 or close by, and what you want fitted. We will reply with the next steps and a quote.

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

Dome replacement in Formby

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

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