Dome rooflights for Horsham: the essentials
For Horsham homes and buildings we offer dome rooflights: polycarbonate and acrylic domes for flat roofs, new or replacement. We measure first, specify to the opening and confirm any planning or building-control points before quoting.
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 Horsham, as anywhere, dome rooflights are the usual choice for older flat roofs with yellowed or leaking domes.
Horsham sits about 12 km from Crawley and 17 km from Horley, and we cover the whole RH12 postcode district and the roads in between.
Specification options
- Insulated PVC or GRP upstands
- Fixed or hinged with vent
- Polycarbonate or acrylic
- Fall-through protection mesh
- Twin, triple or quad skin
- Quick replacement on existing upstands
- Suits schools, flats and commercial roofs
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
Regulations for dome rooflights in Horsham
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. Fire classification of rooflight materials near boundaries is checked at specification.
Read the planning permission guide before you commit to a design.
Guide prices for Horsham
Guide prices for dome rooflights in Horsham 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
- Send the details. Postcode, rough size and a photo of the roof and room.
- Measure and check. A surveyor visits Horsham, measures and checks structure and access.
- 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.
Neighbouring towns
More we do in Horsham
Questions about dome rooflights in Horsham
Do domes leak?
Leaks are usually at the upstand seal or the membrane. Replacing the dome and resealing often fixes it.
Can you replace just the dome?
Yes, if the upstand is sound and the size matches. Otherwise we replace both.
Can domes open?
Hinged and vented domes are available, manual or electric.
Do I need to be at home for the survey in Horsham?
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 Horsham?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
