Guide prices
Per flat rooflight
Fit a supplied unit to your prepared upstand, sealed and trimmed
Per roof lantern
Assemble and glaze a supplied lantern on your upstand
Two-person day rate
Fitting team for multi-unit or mixed work
Guide ranges for labour only, ex VAT for trade accounts. 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 Slough we cover
Distance is rarely the deciding factor. A roof in Windsor, 2 miles from Slough, gets the same survey, the same written quote and the same fitting process as one in SL1, SL2 and SL3. What changes the price is the job itself: size of unit, roof type, access and lifting. Maidenhead, around 5 miles out, is treated the same way.
Included in the work
- A short note of anything we found that needs your attention
- Roof lanterns assembled and glazed on your upstand
- Flat rooflights fitted, sealed and trimmed on your kerbs
- Upstand ready and to size — We ask for the upstands to be built to the maker's drawing before we arrive.
- Who weathers the roof — We agree who turns the roof covering up the kerb before we book.
How a fitting day runs
Arrive and agree the plan. Sheet the floor and furniture. Set up the ladder, tower or scaffold. Check the opening, the upstand or flashing, and the unit against the paperwork. Fix and pack a rooflight level. Seal it into the roof. Line the reveal or fit the ceiling trim. Clean the glass, clear the waste, and talk you through it. That is the shape of most fitting days, and for this type of job it usually takes half a day to a day per unit.
Regulations for Slough 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.
What to send for a quick quote
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 SL1 and we will come back with a quote or a survey date.
Common questions in Slough
Who deals with building control on trade jobs?
On new-build and extension work the rooflights usually sit within your approval or warrant. On replacements in homes in England and Wales we agree up front who notifies building control; we are not registered with a competent person scheme, so we cannot self-certify.
Will my new 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.
Can you fit a rooflight in winter or when it is raining?
Yes, within limits. Cold is less of a problem than wet, because membranes, primers and sealants need a dry surface to bond. We plan fitting days around the forecast and may move a date if heavy rain is due. If the roof has to be opened up, it is not left overnight without a temporary weather seal, so the room below stays dry while the work is finished.
Running a job in Slough? Send the drawings or unit details and we will price the fitting, plus VAT, in writing.

