How we approach sliding rooflights in Letchworth Garden City
Thinking about sliding rooflights in Letchworth Garden City? 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.
Larger gardens in much of the South East mean deeper rear extensions, and deeper rooms need light from above rather than only from the doors. Think of sliding rooflights for walk-out access where a hatch would feel cramped.
We work across Hertfordshire, including Letchworth Garden City, and in neighbouring towns such as Hitchin and Stevenage. Access, parking and how the glass reaches the roof are all checked at the survey.
Specification options
- Anthracite, black or RAL frames
- Rain sensor
- Integrated balustrade on some ranges
- Box (glazed sides) or flat sliding lid
- Electric drive with safety edge
- Full-width, walk-out access to a roof terrace
- Replaces a dormer or stair enclosure on some roofs
Things we check at survey
- Needs space on the roof for the lid to slide clear
- Weight and point loads need a structural check
Consents for sliding rooflights in Letchworth Garden City
Most rooflights on English houses do not need planning permission, provided they keep within 150 mm of the roof surface and below the ridge line. 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.
Building Regulations Approved Document L sets a limiting U-value of 2.2 W/m²K for new or replacement rooflights in existing homes, measured in the horizontal plane; roof windows need 1.4 W/m²K or a Band B energy rating. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
Read the planning permission guide before you commit to a design.
Sliding rooflights prices in Letchworth Garden City
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| 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 |
From enquiry to finished job
- Tell us what you have. Send the SG6 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Letchworth Garden City, measures and checks structure and access.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Neighbouring towns
Other services in Letchworth Garden City
Common 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.
Can children open it?
Controls can be key-switched or placed out of reach. We will set the controls up to suit the household.
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.
Do I need to be at home for the survey in Letchworth Garden City?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Can you work alongside my builder in Letchworth Garden City?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
