Velux, Lanterns & Sun Tunnels
Skylight & Roof Window Installation Sutton — Free Survey, Fixed Price
A dark loft conversion, a windowless hallway, or a kitchen extension crying out for a roof lantern — the right roof window transforms a room. Free on-site survey, one fixed price, no surprises.
- Free, no-obligation on-site survey — no call-out charge
- Pitched roof windows, flat roof lanterns and sun tunnels
- Fixed price agreed before any work begins
- Correct flashing kit fitted for your roof type — the most common cause of leaks
- 12-month workmanship guarantee on every conversion
Request a Free Roof Survey
We respond within 15 minutes. No call-out charge.
🔒 Your details are never shared. We call back within 15 minutes.
Is a Skylight the Right Answer?
Natural light transforms a room more than almost any other single change — here’s when a roof window genuinely earns its place.
A loft conversion needs natural light
Building regulations often require adequate natural light and ventilation for a loft to count as habitable space.
A hallway, landing or bathroom has no window
A tubular skylight can bring genuine daylight into a windowless internal space without any structural work.
A kitchen extension flat roof feels dark
A roof lantern is one of the most effective ways to flood an extension with light without losing wall space to windows.
An existing skylight has failed
Fogged-up glass means the sealed unit has failed, and persistent leaks around an old skylight usually mean the flashing kit needs replacing.
Four Types, Matched to Your Space
The right roof window depends on your roof type and the room underneath it — your surveyor recommends what actually suits your property.
Pitched Roof Windows
Fitted directly into a pitched roof slope, ideal for loft conversions — openable for ventilation, with solar control glass available to reduce overheating.
Flat Roof Lanterns
A raised, multi-panel glass structure fitted into a flat roof — the standard choice for flooding a kitchen extension with natural light.
Sun Tunnels
A reflective tube channels daylight from the roof down into a windowless room below — genuinely effective in hallways, landings and internal bathrooms.
Walk-On Rooflights
Reinforced glazing rated to be walked on directly, used where a flat roof also serves as a terrace or accessible outdoor space above.
Skylights on Sutton's Housing Stock
Sutton’s property types shape which skylight makes sense here.
Cheam & Worcester Park's 1930s Semis
Sutton's large stock of interwar semis often have generous loft space, making pitched roof windows a common addition when converting to a bedroom or office.
Rear Extension Lanterns
Larger plots across the borough mean more rear extensions — flat roof lanterns are one of the most requested additions here.
Carshalton's Village Considerations
Roof windows on period cottages near Carshalton's historic core sometimes need sympathetic detailing to keep the roofline in character.
Sutton to Belmont
Surveys and conversions across the full borough, from Sutton town centre out to Cheam, Carshalton and Wallington.
From First Call to Signed-Off Installation
Free on-site survey
A surveyor assesses your roof structure, the room below, and recommends the right window type and size — no obligation.
Fixed price confirmed
You receive one clear fixed price covering materials, labour and waste removal. Nothing added later.
Window installed
Your crew completes the installation to the agreed programme, keeping the site tidy and finishing the internal reveal.
Sign-off & guarantee
Final inspection, site clean-up, and your 12-month workmanship guarantee issued before the crew leaves.
Every Job Is Priced After a Free Survey
Window size, roof type and access all affect price, so we don’t quote blind. Your surveyor confirms the exact fixed price on site.
Single Pitched Roof Window
Lightest option, fastest turnaround
- Window, flashing kit and installation included
- Internal plaster reveal finished
- Usually completed in 1 day
- 12-month workmanship guarantee
Most Common
Flat Roof Lantern
Our most requested job
- Lantern structure, glazing and upstand included
- Solar control glass available
- Structural opening check included
- 12-month workmanship guarantee
Multiple Windows / Sun Tunnels
Multiple rooms, or tubular skylights
Scheduled around your needs
- Multiple windows quoted together for value
- Sun tunnels for internal rooms
- Project-managed from survey to sign-off
- 12-month workmanship guarantee
Correctly Fitted, Genuinely Weathertight
Correct flashing kit, every time
The flashing kit, not the window itself, is what actually keeps a roof window watertight — we fit the specific kit for your roof material.
Fixed price before we start
The number on your quote is the number on your invoice. No extras added mid-job.
All of Sutton Covered
Local crews across the borough — no travel surcharge from Sutton town to Belmont.
12-month guarantee
Every job is backed by a genuine workmanship guarantee, honoured without argument.
Every property type
Loft conversions, extensions and internal rooms — experience across London's full range of roof window projects.
Part of the Brilliant Group
The roofing division of the team behind Brilliant Plumbing's London operation — same standards, new trade.
What Sutton Homeowners Say
Cheam · Loft Conversion Roof Window
“Loft conversion needed two roof windows for building regs. Surveyor sized and positioned them properly first time, fully weathertight, no issues at building control sign-off.”
Wallington · Kitchen Extension Roof Lantern
“Roof lantern completely changed how bright the kitchen extension feels. Solar control glass recommended to stop it overheating in summer, exactly as promised so far.”
Carshalton · Sun Tunnel, Internal Bathroom
“Windowless bathroom that always needed the light on. Sun tunnel fitted in half a day and it’s genuinely bright in there now, even on an overcast day.”
Sample reviews shown for layout purposes — replace with verified customer reviews before launch.
Skylight Installation in Sutton, Answered
Most roof windows fitted flush with the roof slope fall under permitted development and don't need planning permission. If your property is listed or in a conservation area, or the window projects above the roof plane, we'll flag this during your free survey.
Often yes — building regulations typically require a means of escape for a habitable loft room, which usually means at least one roof window meeting minimum opening size requirements. Your surveyor will confirm what's needed for your specific conversion.
Fogging between the panes means the sealed double-glazed unit has failed and moisture has got in. This isn't usually a safety issue, but it does mean the unit needs replacing — often just the glass unit, not the whole window frame.
For bringing daylight into a windowless space, yes — a well-fitted sun tunnel genuinely transforms a dark hallway or internal bathroom. It won't provide a view or ventilation like an opening window, but for pure daylight it performs very well.
The window itself is rarely where a leak starts — it's almost always the flashing kit around it. Each manufacturer produces flashing kits specific to different roof coverings, and using the correct one for your tile, slate or flat roof type is what actually keeps the installation watertight long-term.
Skylight Installation Across Sutton
No travel surcharge, same fixed-price approach everywhere in the borough.
Ready to Bring in More Light?
Free survey, honest roof option recommendation, fixed price confirmed before any work begins — every job, across Sutton.
