Sliding rooflights for Northolt: the essentials
Thinking about sliding rooflights in Northolt? The short answer: box rooflights whose glass lid slides back for walk-out roof access. The longer answer depends on your roof, which is why we survey before we price.
Mansard and loft conversions are common across London, and roof windows are often set out alongside dormers on the rear slope. Think of sliding rooflights for staircases that rise to a roof terrace.
Northolt is around 17 km from central London, and we survey and fit throughout that part of Greater London, including the UB5 district.
What you can choose
- Double or triple glazing
- Rain sensor
- Anthracite, black or RAL frames
- Electric drive with safety edge
- Box (glazed sides) or flat sliding lid
- Daylight down the stair when closed
- Glazed box sides keep the headroom open
Things we check at survey
- Electric units need a dedicated supply and commissioning
- Needs space on the roof for the lid to slide clear
Planning, building control and Northolt
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. In an extension, glazing including rooflights is normally limited to 25% of the new floor area plus any windows or doors the extension covers, unless a whole-house calculation shows otherwise.
Read the planning permission guide before you commit to a design.
Guide prices for Northolt
These are typical supply-and-fit ranges. For an address in Northolt, 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 box slider with electric drive | £11,995 – £20,395 | £9,995 – £16,995 |
| Standard box slider Typical | £8,995 – £13,195 | £7,495 – £10,995 |
| Flat sliding lid | £7,195 – £9,595 | £5,995 – £7,995 |
How the job runs
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Northolt address.
- Measure and check. A surveyor visits Northolt, 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.
Neighbouring towns
Other services in Northolt
Sliding rooflights in Northolt: questions
Does it need planning permission?
A box unit that projects above the roof plane can need planning permission, especially on the front of a house or in a conservation area. We check before you order.
How heavy is it?
Box sliders weigh hundreds of kilograms, so delivery may need a crane or lifting gear, and the structure must be checked.
Is it lockable?
Yes. Units lock from inside and the drive holds the lid closed.
How do I book a survey in Northolt?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Can you work alongside my builder in Northolt?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
