Fitting jobs in Seaham
Fitting & replacement
- Fit-only rooflight installation · from £445
- Rooflight replacement · from £1,095
- New rooflight in an existing roof · from £2,295
- Rooflight upstands & kerbs · from £245
- Rooflight glass replacement · from £445
- Rooflight leak repairs · from £145
Flat roof rooflights
- Flat rooflight installation · from £995
- Frameless rooflight installation · from £1,445
- Electric opening rooflight installation · from £2,645
- Walk-on rooflight installation · from £3,345
- Sliding rooflight installation · from £7,795
- Roof access hatch installation · from £1,795
- Roof lantern installation · from £3,095
Pitched roofs & lofts
- Pitched roof window installation · from £845
- Loft conversion roof windows · from £1,795
- Conservation rooflight installation · from £1,145
- Sun tunnel installation · from £595
Commercial & trade
- Commercial rooflight installation · from £1,095
- Dome rooflight replacement · from £395
- Smoke vent rooflight installation · from £3,595
- Trade rooflight fitting · from £295 + VAT
The details a specialist gets right
A general builder can frame an opening perfectly well. The trouble usually comes at the top of it. Rooflight makers specify a minimum upstand height above the finished roof, a minimum pitch on the glass, and particular fixings and packers. Miss one of those and the unit can hold water, leak at the corners, or put its product warranty at risk. A fitting specialist works to those figures and checks where each maker's instructions differ. That is the part of the job worth handing over.
Nearby towns we also cover
From the centre of Seaham out to its edges, postcode districts SR7, SR8 and DH6 are all standard cover. The same applies to neighbouring Houghton-Le-Spring, about 5 miles off, and Sunderland, around 5 miles away. If you are further out, towards Peterlee or beyond, send the postcode and we will confirm before quoting.
Do you need permission in Seaham?
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.
Questions about rooflight fitting in Seaham
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.
How long does fitting take?
Fitting a rooflight into an existing, correctly sized opening is often a day's work. New openings take longer, because joists or rafters need trimming, an upstand or flashing has to be built or fitted, and the inside needs finishing. Large units that need lifting gear, and days lost to rain, can stretch things further. Your written quote gives a realistic estimate for your roof.
Can you remove and dispose of the old rooflight?
Yes. Taking out the old unit is part of any replacement job, and it leaves with the rest of the waste unless you ask to keep it. Old domes, glass and frames go through proper waste routes. If removal turns up a rotten kerb or damaged decking, we show you what we have found and agree the repair with you before going any further.

