How we approach dome rooflights in Crawley
Dome rooflights in Crawley means polycarbonate and acrylic domes for flat roofs, new or replacement. We cover the RH11 district and the rest of West Sussex, with a survey before any price is fixed.
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 Crawley, as anywhere, dome rooflights are the usual choice for schools, flats and commercial flat roofs.
Crawley is the main town we list in West Sussex; we also cover nearby Horley and Horsham.
What you can choose
- Twin, triple or quad skin
- Clear, opal or tinted
- Polycarbonate or acrylic
- Fixed or hinged with vent
- Fall-through protection mesh
- Light, impact-resistant domes
- Low cost per unit
Things we check at survey
- Old domes may be fragile — treat as fragile until checked
- Upstand condition decides whether you replace dome only or the whole unit
Rules and responsibilities in Crawley
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. Fragile-roof safety and access are planned before work starts.
See our building regulations guide for U-values, glazing limits and self-certification.
Dome rooflights prices in Crawley
Guide prices for dome rooflights in Crawley 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 |
The process, step by step
- Tell us what you have. Send the RH11 postcode, a rough size and a couple of photos.
- 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.
Neighbouring towns
Related work in Crawley
Dome rooflights in Crawley: questions
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.
Do domes leak?
Leaks are usually at the upstand seal or the membrane. Replacing the dome and resealing often fixes it.
Are domes safe to walk on?
No. Treat any rooflight as fragile unless it is specifically certified non-fragile, and never stand on it.
Do I need to be at home for the survey in Crawley?
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 Crawley?
Yes. On new extensions we fit once the opening and upstand are ready and coordinate dates with your builder.
