Electric opening rooflights in Thamesmead: what is involved?
For Thamesmead homes and buildings we offer electric opening rooflights: hinged rooflights that open on an electric actuator for fresh air. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
Victorian and Edwardian terraces with narrow side returns are typical of much of London, and a glass roof or long flat rooflight is the usual way to keep the back rooms bright once the return is built over. Typical uses for electric opening rooflights include rooms that overheat in summer or steam up when cooking.
We work across Greater London, including Thamesmead, and in neighbouring towns such as Barking and Welling. Access, parking and how the glass reaches the roof are all checked at the survey.
What you can choose
- Double or triple glazing
- Manual winder on smaller units
- Electric actuator with wall switch or remote
- Rain and wind sensor
- Smart-home or app control (manufacturer dependent)
- Can be grouped with fixed units on one roof
- Rain sensor closes the lid automatically
Before you order: points to check
- Lid opening height is limited by the actuator stroke, typically a few hundred millimetres
- Opening area may count toward purge ventilation for the room
Do you need permission in Thamesmead?
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.
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. 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.
See our building regulations guide for U-values, glazing limits and self-certification.
What do electric opening rooflights cost in Thamesmead?
Guide prices for electric opening rooflights in Thamesmead are the same as anywhere we work — what changes the price is the job: access, structure, scaffold and finishing.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large with rain sensor and blind | £4,195 – £5,995 | £3,495 – £4,995 |
| Mid-size electric with rain sensor Typical | £2,995 – £4,195 | £2,495 – £3,495 |
| Small manual or electric opening unit | £2,395 – £3,115 | £1,995 – £2,595 |
From enquiry to finished job
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Thamesmead address.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- 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.
Nearby towns
More we do in Thamesmead
Electric opening rooflights in Thamesmead: questions
Can it open in a power cut?
Most electric units stay where they are during a power cut. Some manufacturers offer a manual override or battery backup — we will tell you which option the chosen model has.
What happens if it rains while it is open?
With a rain sensor fitted, the actuator closes the lid automatically when the sensor detects water. Without one, the lid stays where you left it, which is why we recommend the sensor on any unit over a kitchen or bedroom.
Does it need an electrician?
The rooflight wiring needs a suitable supply. We can arrange it, or your own electrician can provide the spur and we connect the unit.
Is the survey in Thamesmead free?
Yes for new installations. Repair visits are charged, and we tell you the price before we book.
Do I need to be at home for the survey in Thamesmead?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
