Skylight replacement for Truro: the essentials
Thinking about skylight replacement in Truro? 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 West towns mix Georgian and Victorian terraces with modern estates, so the right product differs street by street. Think of skylight replacement for yellowed domes, misted glass and leaking roof windows.
We cover all of Truro and the TR1 district, and nearby Falmouth and Redruth.
Options we can specify in Truro
- Misted glass unit replacement only
- Like-for-like size replacement
- Upstand rebuild and insulation
- Roof window replacement in pitched roofs
- Fixed to electric opening
- Cures most chronic leaks
- Usually done in a day
Things we check at survey
- A replacement is a chance to meet current thermal standards
- Upstand and roof condition decide the scope
Consents for skylight replacement in Truro
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. 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.
Read the planning permission guide before you commit to a design.
Skylight replacement prices in Truro
Guide prices for skylight replacement in Truro 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 |
From enquiry to finished job
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Truro 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.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Nearby towns
Related work in Truro
Skylight replacement in Truro: questions
Can I go bigger when replacing?
Possibly. Enlarging the opening means trimming joists, so we check the structure first.
Can you replace only the misted glass?
Sometimes, if the frame is sound and the maker supplies replacement units. Often a complete new rooflight costs little more and performs better.
Do I need building regulations approval to replace a rooflight?
Replacements in existing homes generally need to meet current thermal standards and may need notification or approval. We advise on the route for your job.
Do you offer skylight replacement in Truro?
Yes. We carry out skylight replacement in Truro and across Cornwall. Send your postcode and we will offer a survey date when we reply.
Can you work alongside my builder in Truro?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
