Dome rooflights for Mitcham: the essentials
Dome rooflights in Mitcham means polycarbonate and acrylic domes for flat roofs, new or replacement. We cover the CR4 district and the rest of Greater London, with a survey before any price is fixed.
Mansard and loft conversions are common across London, and roof windows are often set out alongside dormers on the rear slope. In Mitcham, as anywhere, dome rooflights are the usual choice for older flat roofs with yellowed or leaking domes.
Jobs in Mitcham 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.
Specification options
- Polycarbonate or acrylic
- Fall-through protection mesh
- Clear, opal or tinted
- Insulated PVC or GRP upstands
- Fixed or hinged with vent
- Light, impact-resistant domes
- Quick replacement on existing upstands
Before you order: points to check
- Fire classification matters on some roofs
- Upstand condition decides whether you replace dome only or the whole unit
Building control and safety duties in Mitcham
On commercial roofs the main questions are usually building control, fire classification of rooflight materials and safe access rather than householder permitted development. We confirm the route for your building before ordering.
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. Fire classification of rooflight materials near boundaries is checked at specification.
Read the planning permission guide before you commit to a design.
Dome rooflights prices in Mitcham
These are typical supply-and-fit ranges. For an address in Mitcham, 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 |
|---|---|---|
| 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 Mitcham 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.
- Fit and make good. We fit, seal, test and finish the reveal, then hand over the paperwork.
Dome rooflights near Mitcham
Other services in Mitcham
Dome rooflights in Mitcham: questions
Do domes leak?
Leaks are usually at the upstand seal or the membrane. Replacing the dome and resealing often fixes it.
Why has my dome gone yellow?
UV breaks down older plastics over time. Modern domes have UV-protective layers, but all plastics age.
Can domes open?
Hinged and vented domes are available, manual or electric.
Do you fit dome rooflights in Mitcham?
Yes. We survey and fit dome rooflights in Mitcham and across Greater London. Send your postcode and we will offer a survey date when we reply.
Can you work alongside my builder in Mitcham?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
