How we approach skylight replacement in Hertford
We handle skylight replacement across Hertfordshire, including Hertford. In short: replacing tired domes and failed glass with a modern rooflight. The survey checks structure, weathering and orientation, so the quote reflects your actual roof.
Larger gardens in much of the South East mean deeper rear extensions, and deeper rooms need light from above rather than only from the doors. In Hertford, as anywhere, skylight replacement is the usual choice for yellowed domes, misted glass and leaking roof windows.
We work across Hertfordshire, including Hertford, and in neighbouring towns such as Hoddesdon and Welwyn Garden City. Access, parking and how the glass reaches the roof are all checked at the survey.
Choices for your Hertford project
- Upstand rebuild and insulation
- Misted glass unit replacement only
- Like-for-like size replacement
- Dome to flat glass upgrade
- Roof window replacement in pitched roofs
- Option to add opening and rain sensor
- Cures most chronic leaks
What to check first
- Enlarging the opening changes the structure and may need approval
- Upstand and roof condition decide the scope
Planning, building control and Hertford
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.
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.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Hertford
These are typical supply-and-fit ranges. For an address in Hertford, scaffold, a hoist for heavy glass, or a new structural opening can move the figure, which is why we survey first.
| 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 |
What happens next
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Hertford 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.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Neighbouring towns
More we do in Hertford
Skylight replacement in Hertford: questions
Can I go bigger when replacing?
Possibly. Enlarging the opening means trimming joists, so we check the structure first.
Will it mess up my ceiling?
We protect the room and make good the reveal. Minor decoration may be needed afterwards.
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 you offer skylight replacement in Hertford?
Yes. We carry out skylight replacement in Hertford and across Hertfordshire. Send your postcode and we will offer a survey date when we reply.
Do I need to be at home for the survey in Hertford?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
