Dome rooflights in Sevenoaks: what is involved?
Thinking about dome rooflights in Sevenoaks? The short answer: polycarbonate and acrylic domes for flat roofs, new or replacement. The longer answer depends on your roof, which is why we survey before we 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. Dome rooflights suit older flat roofs with yellowed or leaking domes.
From Sevenoaks to Tonbridge, Orpington and Swanley, the same survey-first process applies: measure, specify, fix the price, then fit.
Choices for your Sevenoaks project
- Polycarbonate or acrylic
- Clear, opal or tinted
- Fall-through protection mesh
- Twin, triple or quad skin
- Insulated PVC or GRP upstands
- Fixed, hinged or vented options
- Low cost per unit
Before you order: points to check
- Upstand condition decides whether you replace dome only or the whole unit
- Old domes may be fragile — treat as fragile until checked
Rules and responsibilities in Sevenoaks
On commercial roofs the main questions are usually building control, fire classification of rooflight materials and safe access rather than householder permitted development. 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.
Read the planning permission guide before you commit to a design.
Dome rooflights prices in Sevenoaks
Guide prices for dome rooflights in Sevenoaks 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 |
|---|---|---|
| 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 |
From enquiry to finished job
- Get in touch. Use the form, WhatsApp or the guide-price tool with your Sevenoaks address.
- Survey. We measure the opening, check the roof build-up and agree the options.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Fitting and handover. We install, clean down and leave product and warranty documents.
Nearby towns
More we do in Sevenoaks
Dome rooflights in Sevenoaks: questions
Can domes open?
Hinged and vented domes are available, manual or electric.
Are domes safe to walk on?
No. Treat any rooflight as fragile unless it is specifically certified non-fragile, and never stand on it.
Why has my dome gone yellow?
UV breaks down older plastics over time. Modern domes have UV-protective layers, but all plastics age.
Do I need to be at home for the survey in Sevenoaks?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Can you work alongside my builder in Sevenoaks?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
