Roof lantern installation in Friern Barnet

Guide prices in Friern Barnet

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.

Coverage in and around Friern Barnet

Jobs across N12, N11 and N20 are part of our normal cover for Friern Barnet. 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 Muswell Hill and Finchley are covered on the same terms, so a house on the edge of town is no harder to book than one in the centre.

Buying your own, or letting us supply

Your unit or ours, the fitting standard is the same. For supply and fit we choose a roof lantern to suit the roof and price it with the installation. For fit-only we work with what you have, after confirming it arrived undamaged, that it matches the builder's opening, and that the upstand will sit at the height the maker asks for. Report any transit damage to the seller, as the product cover is theirs and the maker's. Our written guarantee applies to the fitting itself.

On the day, we cover

• Frame assembled on the kerb in the maker's set order
• Upstand checked for size, level and square before the kit is opened
• Glass lifted and laid into the frame by hand or with gear
• Level, not to a fall — We set or check the kerb level unless your lantern's maker says otherwise.
• Heat and glare — We talk through the glass options before you order a large lantern.

From arrival to clean-up

Protection comes before tools. Floors, furniture and stairs get covered, and the ceiling below the opening is sheeted to catch dust. Up top, the fitters confirm the opening is square and the upstand or flashing suits what the maker specifies. Fixing follows, then weather-sealing into the membrane, felt or tiles. Only once the roof is tight do they turn to the internal reveal. Time on site for a roof lantern: one to two days, weather permitting.

Planning, building control and Friern Barnet

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.

Before you get in touch

What we cannot see, we have to guess, and guesses make quotes wider. So the more you send, the tighter the price. Useful: shots from the roof or garden, shots from the room underneath, a rough width and length, the roof finish, any access problems, and the product page if you have already ordered. Add the property postcode around N12 and we will come back with a quote or a survey date.

Common questions in Friern Barnet

Tell us your postcode, N12 or close by, and what you want fitted. We will reply with the next steps and a quote.