Guide prices in Lewisham
Up to 1 m²
Laminated walk-on unit with anti-slip finish, fitted level with the terrace
Up to 2 m²
Larger walk-on glazing
Large or bespoke
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 Lewisham we cover
Distance is rarely the deciding factor. A roof in Blackheath, 1 mile from Lewisham, gets the same survey, the same written quote and the same fitting process as one in SE13, SE4 and SE10. What changes the price is the job itself: size of unit, roof type, access and lifting. Brockley, around 1 mile out, is treated the same way.
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
- Unit bedded and fixed so it sits level with the finished surface
- Lifting plan for the unit, including people or gear for the day
- Drainage around the unit checked so water does not lie on the glass
- Weight on delivery day — We plan the delivery and lift before booking any lifting gear or extra hands.
- Drainage around the glass — We check how water will drain from the terrace around the unit.
How a fitting day runs
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 walk-on rooflight: one to two days, weather permitting.
Regulations for Lewisham 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.
Getting a price from photos
Start with your phone. Take a picture of the roof where the unit goes or already sits, then one from inside looking up. Measure what you can, even roughly. Tell us what the roof is covered with and how a fitter would reach it: ladder, garden access or scaffold. Bought it already? Send the link or spec. Add your full postcode, for example in SE13, and we can price it.
Common questions in Lewisham
What upstand height and roof pitch does walk-on 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.
Do you cover Lewisham?
Yes. Fitters travel to addresses in Lewisham and the surrounding districts, including SE13. We do not run an office there; the survey and the fitting happen at your property. A few island and remote postcodes are covered by arrangement; if yours is one, we confirm travel and dates before quoting.
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.
Send a few photos and your SE13 postcode, and we will put together a written quote for the job.

