Sliding rooflights for Thatcham: the essentials
Thinking about sliding rooflights in Thatcham? 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.
Many South East homes have been extended more than once, and an old dome over an earlier extension is often due for replacement. Think of sliding rooflights for staircases that rise to a roof terrace.
We work across Berkshire, including Thatcham, and in neighbouring towns such as Newbury and Basingstoke. Access, parking and how the glass reaches the roof are all checked at the survey.
Choices for your Thatcham project
- Anthracite, black or RAL frames
- Double or triple glazing
- Integrated balustrade on some ranges
- Box (glazed sides) or flat sliding lid
- Electric drive with safety edge
- Glazed box sides keep the headroom open
- Lockable from inside
Things we check at survey
- The stair opening and headroom must meet Building Regulations
- Needs space on the roof for the lid to slide clear
Planning and building rules for Thatcham
In England a rooflight on a house is usually permitted development under Class C if it projects no more than 150 mm beyond the roof slope and sits no higher than the ridge. 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.
For English homes the energy rules ask for rooflights of 2.2 W/m²K or better and roof windows of 1.4 W/m²K (or WER Band B); most modern double glazed units meet both. 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.
See our building regulations guide for U-values, glazing limits and self-certification.
Sliding rooflights prices in Thatcham
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 RG18 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Thatcham, 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
Related work in Thatcham
Questions about sliding rooflights in Thatcham
Is it lockable?
Yes. Units lock from inside and the drive holds the lid closed.
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.
Can you work alongside my builder in Thatcham?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
Do you fit sliding rooflights in Thatcham?
Yes. We survey and fit sliding rooflights in Thatcham and across Berkshire. Send your postcode and we will offer a survey date when we reply.
