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RooflightInstallers.co.uk
Northamptonshire · England

New rooflight in an existing roof in Northamptonshire

We cover 23 postcode districts across Northamptonshire, and we fit rooflights in all of them. The work itself does not change from one district to the next. A new rooflight still needs a correctly sized opening, an upstand or flashing to suit the roof, and sealing that matches the covering. What does change is access: terraced streets, long gardens, steep pitches, tight parking. We price that honestly in the written quote rather than averaging it out across every job.

Guide prices in Northamptonshire

Small fixed unit

£2,295 – £3,345including VAT at 20%

Opening cut, joists trimmed, upstand built, roof covering made good, plasterboard reveals ready for decoration

Medium fixed unit

£3,345 – £4,795including VAT at 20%

As the small unit, with a larger opening up to about 1 × 2 m and additional trimming

Large or opening unit

£4,795 – £7,795including VAT at 20%

Bigger structural work or an electric opening unit

Guide ranges for supply & fit, including structure and making good; building control or warrant fees extra. 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 Northamptonshire

Fitting across Northamptonshire means planning routes, access and lifting as well as the roof itself. Narrow lanes, shared driveways and town-centre parking restrictions all affect how a large unit is delivered and raised to roof level. We ask about these early so the quote reflects them. That approach is the same everywhere we work in England, from single domestic jobs to multi-unit commercial sites.

What the job includes

  • Opening marked out, covering stripped back and the deck cut cleanly
  • Plasterboard reveals formed inside and left ready for skim or decoration
  • Joists or rafters trimmed with new timbers to carry the load around
  • Warm or cold roof build-up — We find out whether the roof is insulated above or between the joists before designing the upstand.
  • Cables, pipes and ceiling fittings — We look into the ceiling void for anything in the way of the new opening.

Rules that apply in England

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.

Common questions in Northamptonshire

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.

Do you cover Northamptonshire?

Yes. Fitters travel to addresses in Northamptonshire and the surrounding districts, including LE, MK, NN, OX and PE postcodes. 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.

Can you remove and dispose of the old rooflight?

Yes. Taking out the old unit is part of any replacement job, and it leaves with the rest of the waste unless you ask to keep it. Old domes, glass and frames go through proper waste routes. If removal turns up a rotten kerb or damaged decking, we show you what we have found and agree the repair with you before going any further.

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

Fitting in Northamptonshire

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

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