Fit-onlySupply & fitReplacementsTrade fitting
Fitting teams across England, Wales, Scotland & NI · Call 0800 088 6248
RooflightInstallers.co.uk
New Malden · KT3 · Greater London

Walk-on rooflight installation in New Malden

Rooflight work is weather work. Membranes, primers and sealants all want a dry surface, so a fitting day in New Malden is planned around the forecast rather than pinned to a date regardless of rain. The opening is kept covered whenever it is exposed, and a roof is not left open overnight without a proper temporary seal. That approach applies to every walk-on rooflight we install, from a new opening to a straight swap or a fit-only job. We cover New Malden, the KT3 district and the rest of Greater London.

Guide price from £3,345 · Supply & fit

New Malden guide prices

Up to 1 m²

£3,345 – £4,545including VAT at 20%

Laminated walk-on unit with anti-slip finish, fitted level with the terrace

Up to 2 m²

£4,545 – £7,195including VAT at 20%

Larger walk-on glazing

Large or bespoke

£7,195 – £11,995including VAT at 20%

Big panes, structural calculations, lifting gear

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.

Areas around New Malden we cover

Jobs across KT3, KT5 and KT1 are part of our normal cover for New Malden. 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 Worcester Park and Surbiton 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?

Supply and fit tends to suit people who would rather not pick a unit from a catalogue. We look at the roof, the opening and how you use the room, then put a walk-on rooflight on the quote that fits all three. Fit-only suits people who already know what they want, or have one on site. We are happy with either. The difference is who stands behind what: on fit-only, the maker or retailer covers the product, and our workmanship guarantee covers the installation.

What the job includes

  • Perimeter joints sealed and the waterproofing lapped as the maker shows
  • Support frame or upstand prepared to the approved structural design
  • Protective film removed and the anti-slip surface left clean
  • Weight on delivery day — We plan the delivery and lift before booking any lifting gear or extra hands.
  • Non-fragile is not walk-on — We make sure the unit is genuinely designed for foot traffic.

How a fitting day runs

Where a job takes one to two days, the split is usually structural work first and finishing second. Early on, the fitters cut or prepare the opening, trim where needed and prepare the upstand or flashing. Then a walk-on rooflight is lifted in, fixed and made weathertight so the roof is sound before anyone moves inside. Plasterboard, trim and filler for the reveal come after. Each evening the work area is swept, and at the end the glass is cleaned and the team talks you through what was done.

Do you need permission in New Malden?

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.

Details that speed up your quote

Keep it simple. Two or three photos, outside and inside. Approximate sizes. What the roof is made of. Anything awkward about getting up there, such as a conservatory below, a narrow side path or no parking. If you bought the rooflight online, the link or model name. Then your postcode in or around KT3. That is enough for a first price.

Common questions in New Malden

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.

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.

Can you fit the walk-on rooflight I bought online?

Yes, fit-only is one of our core services. Send the product link or spec, photos of the roof and rough sizes, and we can usually price it from those. Before fitting we check the delivery for damage, which should be reported to the seller, plus the size against the builder's opening and the upstand height. The product warranty stays with the maker or seller, and our guarantee covers the fitting.

For a free, no-obligation quote in New Malden, use the form or call us with the details of your roof.

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

Walk-on rooflights in New Malden

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

CallGet a quote