Rooflights & skylights in London, lit from the sky down.
Glazing London supplies and installs rooflights and skylights across London: fixed flat roof lights, opening rooflights, conservation-style pitched units and walk-on glass. Part L compliant glazing, building control sign-off arranged for new openings, and a free survey and quote. Call 07399 253464, we answer 24/7.
FENSA-registered installers · Fitted by our own teams, not subcontractorsFlat roof light or pitched skylight?
The right unit depends entirely on the roof it sits in. Most London jobs are one of two situations: a flat roof over a rear extension, or a pitched slope over a loft or side return. Here is how the choice usually falls.
Flat roof lights
Fixed or opening double-glazed units on an insulated upstand, sitting proud of the roof so water sheds away. The standard choice over kitchen extensions and rear additions.
- Frameless-look glass or slim aluminium frame
- Upstand keeps the seal above ponding water
- Fixed, hinged-opening or sliding versions
- Made to size, from about 600x600mm up to structural spans
Pitched skylights & roof windows
Centre-pivot or top-hung windows fitted in the plane of the slope, flashed into slate or tile. The workhorse of loft rooms, stairwells and side-return roofs.
- Centre-pivot for easy cleaning from inside
- Top-hung for fire-escape compliance in lofts
- Conservation style with a central glazing bar for period streets
- Blinds, electric opening and rain sensors available
Every way to bring the sky into the plan.
Fixed flat roof lights
The simplest and most watertight option: a sealed double-glazed unit bonded to a slim frame on a 150mm insulated upstand. No moving parts, nothing to service, maximum glass for the opening. Low-E coated, argon-filled units reach around 1.0 W/m²K, comfortably inside Part L.
Opening rooflights
Hinged units that lift on manual spindles or electric actuators, with rain sensors that close them automatically. Over a kitchen or bathroom they act as purge ventilation exactly where steam collects, and on warm nights they pull air through the whole floor.
Walk-on glass
Structurally engineered laminated units, typically 25mm-plus of bonded toughened glass, set flush into terraces, light wells and flat roofs you actually use. They put daylight into basement rooms without giving up the outdoor space above, and anti-slip finishes are available.
Conservation rooflights
Flush-fitting steel-look units with a central bar, made for conservation areas and listed streets where a modern dome would jar. Planning officers across North London know these profiles well, which makes approvals smoother.
Roof glazing over a bigger footprint? A roof lantern lifts the ceiling as well as lighting it, and if you are reglazing a garden room our conservatory glazing page covers roof and side glass in detail.
What the rules actually require
Two sets of rules touch rooflight installation, and we handle both. Part L of the Building Regulations sets thermal performance: our standard units sit around 1.0 to 1.2 W/m²K, better than the target. And cutting a new opening means trimming joists or rafters, which is structural work that needs building control sign-off. We arrange that inspection and the paperwork as part of the job. Like-for-like replacement of an existing rooflight is simpler: no new structure, just a better unit in the same hole.
- Part L thermal compliance: low-E, argon-filled units as standard
- Building control notified and sign-off arranged for new structural openings
- Safety glazing: toughened outer, laminated inner panes overhead per BS 5516
- Permitted development guidance at survey, conservation styles where needed
Measured, made, fitted, signed off
A surveyor measures the opening (or plans the new one), the unit is made to size, and installation typically takes one to two days including flashings or upstand work. If a unit arrives damaged or a pane fails later, our 24/7 emergency glazing team covers the gap, and we can cut replacement glass to size for most existing rooflights rather than replacing the whole frame.
