Skylight replacement in Weymouth: what is involved?
Thinking about skylight replacement in Weymouth? 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.
Western coasts take wind-driven rain, so we pay close attention to upstand height and flashing laps on exposed roofs. Skylight replacement suits yellowed domes, misted glass and leaking roof windows.
Weymouth is around 43 km from Bournemouth, and we survey and fit throughout that part of Dorset, including the DT4 district.
Choices for your Weymouth project
- Misted glass unit replacement only
- Fixed to electric opening
- Like-for-like size replacement
- Upstand rebuild and insulation
- Dome to flat glass upgrade
- Usually done in a day
- Better thermal performance
Things we check at survey
- Upstand and roof condition decide the scope
- Enlarging the opening changes the structure and may need approval
Planning, building control and Weymouth
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. Listed buildings need listed building consent, flats have no householder permitted development rights, and an Article 4 direction can remove the rights in some conservation areas.
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. 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.
See our building regulations guide for U-values, glazing limits and self-certification.
What does skylight replacement cost in Weymouth?
Guide prices for skylight replacement in Weymouth 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 |
|---|---|---|
| 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 |
The process, step by step
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Weymouth address.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Skylight replacement near Weymouth
More we do in Weymouth
Skylight replacement in Weymouth: questions
What do you do with the old unit?
We remove it from site and recycle what can be recycled.
Can I go bigger when replacing?
Possibly. Enlarging the opening means trimming joists, so we check the structure first.
How long does a replacement take?
Usually a day for a standard rooflight on a sound upstand.
Do I need to be at home for the survey in Weymouth?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
How do I book a survey in Weymouth?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
