Conservation rooflights in Cowes: what is involved?
We handle conservation rooflights across the Isle of Wight, including Cowes. In short: slim, low-profile steel-look rooflights for period and listed roofs. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Across the South East, single-storey kitchen extensions on 1930s semis and post-war detached houses are where most flat rooflights and lanterns go. In Cowes, as anywhere, conservation rooflights are the usual choice for slate and plain-tile roofs where a quiet roofline matters.
Jobs in Cowes are planned around access: whether the roof can be reached from the garden, whether a hoist or crane is needed, and where we can park. We check this when we measure.
What you can choose
- Toughened or laminated double glazing
- Manual or electric opening
- Flashings for slate or plain tile
- Blinds
- Steel or aluminium frames
- Traditional slim profile, sits low in the roof
- Optional central glazing bar
What to check first
- Conservation officers may specify size and position
- Lead or matching flashings may be required
Consents for conservation rooflights in Cowes
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.
Read the planning permission guide before you commit to a design.
What do conservation rooflights cost in Cowes?
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 or electric conservation rooflight | £2,755 – £4,195 | £2,295 – £3,495 |
| Standard conservation rooflight Typical | £2,035 – £2,755 | £1,695 – £2,295 |
| Small conservation rooflight | £1,795 – £2,155 | £1,495 – £1,795 |
The process, step by step
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Cowes address.
- Free site visit. For new installs we survey free, measure and confirm the roof detail.
- Written price. You receive a fixed price listing the unit, the work and the lead time.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Conservation rooflights near Cowes
More we do in Cowes
Questions about conservation rooflights in Cowes
Are conservation rooflights double glazed?
Most modern ones are, with slim units behind the traditional frame.
Do they suit slate roofs?
Yes — flashings are made for slates and for plain tiles.
Can you copy an original rooflight?
Some makers produce bespoke sizes to match an existing opening. We can survey and quote.
Do you fit conservation rooflights in Cowes?
Yes. We survey and fit conservation rooflights in Cowes and across the Isle of Wight. Send your postcode and we will offer a survey date when we reply.
Can you work alongside my builder in Cowes?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
