Walk-on rooflights in Horsham: what is involved?
Our walk-on rooflights service in Horsham covers structural glass you can stand on, set flush into terraces and floors. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Across the South East, single-storey kitchen extensions on 1930s semis and post-war detached houses are where most flat rooflights and lanterns go. Typical uses for walk-on rooflights include terraces where the light below matters as much as the space above.
We work across West Sussex, including Horsham, and in neighbouring towns such as Crawley and Horley. Access, parking and how the glass reaches the roof are all checked at the survey.
Choices for your Horsham project
- Double or triple glazed with a structural top pane
- Internal floor panels between storeys
- Integrated in paving pedestals or a timber deck
- Anti-slip frit or etched top surface
- Fixed or with privacy interlayer
- Pairs with a sliding box unit for terrace access
- Light below without losing usable terrace space
What to check first
- Structural support and the design load must be confirmed by the manufacturer or an engineer
- Drainage around the unit needs planning so water does not pond on the glass
Consents for walk-on rooflights in Horsham
English householder permitted development (Class C) normally covers rooflights that stand no more than 0.15 m proud of the roof plane and stay below the highest part of the roof. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
Under Approved Document L, a rooflight added to an English home must achieve at least 2.2 W/m²K (horizontal plane), and a roof window 1.4 W/m²K or Window Energy Rating Band B. The Future Homes and Buildings Standards, published in March 2026, apply from 24 March 2027 and keep the 2.2 W/m²K limit for rooflights.
Read the planning permission guide before you commit to a design.
What do walk-on rooflights cost in Horsham?
These are typical supply-and-fit ranges. For an address in Horsham, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or bespoke walk-on panel | £6,595 – £11,995 | £5,495 – £9,995 |
| Mid-size walk-on rooflight Typical | £4,795 – £6,595 | £3,995 – £5,495 |
| Small walk-on panel | £3,595 – £4,795 | £2,995 – £3,995 |
The process, step by step
- Tell us what you have. Send the RH12 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Horsham, measures and checks structure and access.
- Agree the quote. You approve the specification and price before anything is ordered.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Walk-on rooflights near Horsham
More we do in Horsham
Walk-on rooflights in Horsham: questions
Is the glass slippery?
Walk-on glass has an anti-slip finish, usually a ceramic frit or etched pattern. Like any outdoor surface it needs cleaning to stay effective.
Will it sit flush with my paving?
Yes — the unit is set on its own upstand so the glass finishes level with the surrounding paving or decking.
Can it be used inside the house?
Yes. Internal walk-on panels pass light from an upper floor or ground floor to a basement below.
Do you fit walk-on rooflights in Horsham?
Yes. We survey and fit walk-on rooflights in Horsham and across West Sussex. Send your postcode and we will offer a survey date when we reply.
Can you work alongside my builder in Horsham?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
