How we approach dome rooflights in Portsmouth
Thinking about dome rooflights in Portsmouth? 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.
Period cottages and conservation-area streets are common in the South East, so slim conservation rooflights are often the right choice. Dome rooflights suit schools, flats and commercial flat roofs.
We work across Hampshire, including Portsmouth, and in neighbouring towns such as Gosport and Fareham. Access, parking and how the glass reaches the roof are all checked at the survey.
Options we can specify in Portsmouth
- Polycarbonate or acrylic
- Insulated PVC or GRP upstands
- Clear, opal or tinted
- Twin, triple or quad skin
- Fixed or hinged with vent
- Low cost per unit
- Suits schools, flats and commercial roofs
What to check first
- Upstand condition decides whether you replace dome only or the whole unit
- Plastic domes have a lower acoustic and thermal performance than glass
Regulations for dome rooflights in Portsmouth
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.
Read the planning permission guide before you commit to a design.
Guide prices for Portsmouth
Prices below are shown including and excluding VAT. In Portsmouth, as elsewhere, making good inside and access equipment are the main variables.
| 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 PO1 postcode, a rough size and a couple of photos.
- Measure and check. A surveyor visits Portsmouth, measures and checks structure and access.
- Fixed quote. Product, work and price in writing — nothing is ordered until you agree.
- Installation day. Usually one day into a prepared opening, longer for new openings.
Nearby towns
Related work in Portsmouth
Common 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.
Can domes open?
Hinged and vented domes are available, manual or electric.
Do domes leak?
Leaks are usually at the upstand seal or the membrane. Replacing the dome and resealing often fixes it.
Do I need to be at home for the survey in Portsmouth?
Yes — someone needs to let us into the room below and, where possible, show us how the roof is reached.
Do you fit dome rooflights in Portsmouth?
Yes. We survey and fit dome rooflights in Portsmouth and across Hampshire. Send your postcode and we will offer a survey date when we reply.
