New rooflight in an existing roof in Marlow

Guide prices

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.

Is your address covered?

Jobs across SL7, SL8 and HP12 are part of our normal cover for Marlow. 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 Maidenhead and High Wycombe 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?

Which works out better, buying your own or letting us supply? It depends on what you value. Buying your own gives you control of the product and what you pay for it. Letting us supply puts the whole job, unit and fitting, under one written quote. On a customer-supplied unit we still measure it against the opening, look at the upstand, and inspect the condition it arrived in. Warranty on the product sits with whoever sold it, while the fitting carries our own guarantee.

What we do on the day

• Insulated upstand built square, level and to the maker's height
• Roof membrane, felt or tiles made good and dressed up the upstand
• Plasterboard reveals formed inside and left ready for skim or decoration
• Cables, pipes and ceiling fittings — We look into the ceiling void for anything in the way of the new opening.
• Warm or cold roof build-up — We find out whether the roof is insulated above or between the joists before designing the upstand.

From arrival to clean-up

Fitting days start with a look at the sky. If rain is due, the order of work changes so the roof is never left open to it. A typical day for a new rooflight runs like this: set up access, protect the room, open up the roof or prepare the existing kerb or frame, check sizes, fix, seal, then finish inside. On jobs that take more than a day, the opening is weather-sealed overnight. The last hour goes on tidying, waste removal and a walk-round with you.

Planning and building rules 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.

Help us quote accurately

A fast quote needs five things: a photo of the roof from outside, one from the room below, rough sizes of the opening or the space, the roof covering (felt, single-ply, fibreglass, tiles, slate or metal), and a note on access. If you have already bought the unit, add the product link or spec sheet. And give us the postcode, SL7 or a neighbouring district.

Common questions in Marlow

Get in touch with the details of your Marlow property and we will explain what the job involves and what it costs.