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RooflightInstallers.co.uk
Bristol · England

New rooflight in an existing roof in Bristol

A good share of new rooflight openings in Bristol is replacement work. Older units go brittle or discoloured, sealed glass mists, and seals give up after years of sun and frost. Swapping the unit is often possible on the existing kerb, provided that kerb is sound, level and tall enough above the finished roof. Where it is not, we rebuild it. We cover the whole of Bristol, across 14 postcode districts, with fitters travelling to each address.

Guide prices in Bristol

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 Bristol

Fitting across Bristol 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's included

  • Roof membrane, felt or tiles made good and dressed up the upstand
  • Survey of joist direction, roof build-up, ceiling void and access
  • Opening marked out, covering stripped back and the deck cut cleanly
  • Which way the joists run — We check the direction and size of the joists before fixing the rooflight's position.
  • Planning for your roof — We check whether the new rooflight falls within permitted development for your house and nation.

Rules that apply in England

England's rules in short: permitted development usually covers a rooflight on a house roof provided it doesn't stick out more than 0.15 m or rise above the ridge, though a listed building always needs consent and some streets have Article 4 directions. Building regulations apply to new openings, and replacements go through building control; as we are not registered with a competent person scheme, we use a building notice and show the fee on the quote. The energy limit for rooflights in existing homes is 2.2 W/m²K, and the 2026 Approved Document L, in force from 24 March 2027, keeps that figure.

Common questions in Bristol

What if my roof opening is the wrong size for the 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.

Do you offer trade rates for builders and roofers?

We carry out subcontract fitting for builders, roofers, extension companies and commercial contractors. Pricing is per job or per schedule of units, agreed in writing before we start. We can work to your programme, fit on your upstand or build our own, and leave the opening ready for the next trade. Send drawings or a unit schedule and we will come back with a trade quote.

What upstand height and roof pitch does rooflight fitting need?

It depends on the product. Manufacturers usually specify a minimum upstand height above the finished roof surface, and a minimum pitch on the glass so rain runs off. We follow the maker's figures for your unit rather than a rule of thumb. If your existing kerb or roof falls short, we explain the options, such as raising the upstand or choosing a unit with built-in pitch.

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

Fitting in Bristol

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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