Dome rooflights in Amersham: what is involved?
Our dome rooflights service in Amersham covers polycarbonate and acrylic domes for flat roofs, new or replacement. Every job starts with a survey of the opening, the roof covering and the room below, and a fixed written price.
Across the South East, single-storey kitchen extensions on 1930s semis and post-war detached houses are where most flat rooflights and lanterns go. Think of dome rooflights for schools, flats and commercial flat roofs.
From Amersham to Chesham, Chalfont St Peter and Gerrards Cross, the same survey-first process applies: measure, specify, fix the price, then fit.
Specification options
- Polycarbonate or acrylic
- Twin, triple or quad skin
- Fall-through protection mesh
- Fixed or hinged with vent
- Clear, opal or tinted
- Low cost per unit
- Smoke-vent versions available
Things we check at survey
- Old domes may be fragile — treat as fragile until checked
- Fire classification matters on some roofs
Rules and responsibilities in Amersham
For non-domestic buildings, planning depends on the building and its location; building regulations cover thermal performance and the fire classification of rooflights near boundaries. Product data for building control is supplied with every quote.
For buildings other than dwellings, Approved Document L Volume 2 sets limiting U-values of 2.2 W/m²K for rooflights and 3.0 W/m²K for roof ventilators, including smoke vents. Fragile-roof safety and access are planned before work starts.
See our building regulations guide for U-values, glazing limits and self-certification.
Guide prices for Amersham
The ranges below are typical for straightforward jobs; your fixed price follows a survey of your roof.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Dome and new insulated upstand | £955 – £1,675 | £795 – £1,395 |
| Hinged or vented dome Typical | £715 – £1,195 | £595 – £995 |
| Replacement fixed dome | £475 – £835 | £395 – £695 |
What happens next
- Tell us what you have. Send the HP7 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Amersham, measures and checks structure and access.
- 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 Amersham
Common questions
Why has my dome gone yellow?
UV breaks down older plastics over time. Modern domes have UV-protective layers, but all plastics age.
Can you replace just the dome?
Yes, if the upstand is sound and the size matches. Otherwise we replace both.
Should I replace a dome or switch to glass?
A dome is cheaper and quick; glass gives a clear view and better performance. On a tight budget, or a commercial roof with many units, domes remain sensible.
How do I book a survey in Amersham?
Send your postcode and, if you can, a photo of the roof and the room. We offer a survey date when we reply.
Can you work alongside my builder in Amersham?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
