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New Malden · KT3 · Greater London

Conservation rooflight installation in New Malden

Conservation rooflight installation in New Malden comes down to what happens around the glass. A good unit sat on a poor upstand, or with the membrane or flashing cut short at the corners, will still let water in. We fit each conservation rooflight to the maker's instructions for fixings, packers and sealant, for homes and businesses across New Malden and the rest of Greater London. That covers supply and fit, fit-only for a unit you already own, and swapping out a tired one. Every job starts with a written quote, so the price and scope are clear before anyone climbs a ladder.

Guide price from £1,145 · Supply & fit

Guide prices in New Malden

Small conservation unit

£1,145 – £1,695including VAT at 20%

Low-profile unit with glazing bar, slate or tile flashing

Medium unit

£1,695 – £2,495including VAT at 20%

Larger opening, lead or matching flashings

Large or bespoke

£2,495 – £3,845including VAT at 20%

Larger or made-to-order units for listed or sensitive roofs

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.

Covering KT3 and neighbouring districts

If you also own a property or a business unit in Worcester Park, Surbiton or Kingston upon Thames, that is no problem. We can survey and quote both, and where it suits, line the fitting days up together. Every address is reached by fitters travelling to it from their current jobs, and KT3, KT5 and KT1 sit comfortably within that pattern.

Fit-only or supply and fit

A damaged delivery is a frequent snag on fit-only work. Before the day, unpack a conservation 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 opening size and the flashing kit it expects. If everything lines up, we fit it. If not, we explain what needs changing first.

What we do on the day

  • Rooflight set low so it sits close to the line of the roof
  • Slates or tiles lifted carefully and kept for reuse where possible
  • Inside lining fitted to suit the room's ceiling or exposed rafters
  • Listed building consent — We confirm listed building consent is in place before fitting any rooflight on a listed building.
  • Conservation area rules by nation — We check the permitted development position for your nation before the rooflight is ordered.

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

Regulations for New Malden properties

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.

Help us quote accurately

For fit-only work, the product details matter most: the link, the spec sheet, or a photo of the label on the box. Alongside that, send pictures of the roof and the ceiling below, approximate opening sizes, the type of roof covering, and how someone would get onto the roof. For supply and fit, the same photos and sizes do the job. Finish with your postcode, such as KT3.

Common questions in New Malden

How long does fitting take?

Fitting a conservation 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.

Will my new conservation 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.

How does payment work?

Payment terms are set out on your written quote before you accept it. Depending on the job, that may mean a deposit, stage payments for larger work, or payment on completion. The contract is with S&K Property Investments and Improvement Ltd, part of the S&K Group. Nothing is added without your agreement: if something unexpected comes up, we discuss it and agree any change before carrying on.

Got a unit waiting to go in, or need one sourced? Either way, start with your New Malden address and a couple of photos.

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

Conservation rooflights in New Malden

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

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