How we approach skylight replacement in Dunstable
Thinking about skylight replacement in Dunstable? The short answer: replacing tired domes and failed glass with a modern rooflight. 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. Typical uses for skylight replacement include yellowed domes, misted glass and leaking roof windows.
Neighbouring towns include Luton (7 km) and Leighton Buzzard (10 km). We offer a survey date when we reply to your enquiry.
Specification options
- Misted glass unit replacement only
- Fixed to electric opening
- Roof window replacement in pitched roofs
- Upstand rebuild and insulation
- Like-for-like size replacement
- Usually done in a day
- Clearer view and more light
Before you order: points to check
- Old glass and domes are disposed of responsibly
- Enlarging the opening changes the structure and may need approval
Planning and building rules for Dunstable
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.
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.
Guide prices for Dunstable
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Replacement with upstand rebuild and opening unit | £2,995 – £4,795 | £2,495 – £3,995 |
| Dome to flat glass upgrade Typical | £1,915 – £2,995 | £1,595 – £2,495 |
| Like-for-like glass rooflight | £1,555 – £2,155 | £1,295 – £1,795 |
How the job runs
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits Dunstable, measures and checks structure and access.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Skylight replacement near Dunstable
More we do in Dunstable
Common questions
How long does a replacement take?
Usually a day for a standard rooflight on a sound upstand.
Will it mess up my ceiling?
We protect the room and make good the reveal. Minor decoration may be needed afterwards.
Can I go bigger when replacing?
Possibly. Enlarging the opening means trimming joists, so we check the structure first.
Will I need planning permission in Dunstable?
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.
Can you work alongside my builder in Dunstable?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
