What are conservation rooflights?
Across Merseyside, our conservation rooflights work covers slim, low-profile steel-look rooflights for period and listed roofs. Survey first, fixed price second, fitting third.
The North West gets more rain than most of England, so upstand height, membrane detailing and rain sensors on opening units are not optional extras. Converted mills and warehouses in the North West often have large rooflights or glass roofs that need specialist replacement.
Towns in Merseyside
Options we can specify
- Manual or electric opening
- Central vertical glazing bar
- Flashings for slate or plain tile
- Steel or aluminium frames
- Toughened or laminated double glazing
- Double glazed behind a period look
- Often preferred by conservation officers
Planning and building rules in England
English householder permitted development (Class C) normally covers rooflights that stand no more than 0.15 m proud of the roof plane and stay below the highest part of the roof. A rooflight on a side-facing slope must be obscure-glazed, and fixed shut unless the opening part is more than 1.7 m above the floor.
Building Regulations Approved Document L sets a limiting U-value of 2.2 W/m²K for new or replacement rooflights in existing homes, measured in the horizontal plane; roof windows need 1.4 W/m²K or a Band B energy rating. Replacing a rooflight or roof window can be self-certified by an installer registered with an authorised competent person scheme; otherwise building control approval is needed.
What do conservation rooflights cost in Merseyside?
Prices below are shown including and excluding VAT. In Merseyside, as elsewhere, making good inside and access equipment are the main variables.
| Option | Guide price inc VAT | Ex VAT |
|---|---|---|
| Large or electric conservation rooflight | £2,755 – £4,195 | £2,295 – £3,495 |
| Standard conservation rooflight Typical | £2,035 – £2,755 | £1,695 – £2,295 |
| Small conservation rooflight | £1,795 – £2,155 | £1,495 – £1,795 |
How the job runs
- Tell us about the roof. Send the postcode, rough sizes and a photo or two through the form, WhatsApp or the guide-price tool.
- Free survey. For new installations a surveyor measures the opening, checks the roof build-up and talks through glass and options.
- Fixed written quote. You get the product, the work and the price in writing. Nothing is ordered or paid for until you agree.
- Fitting and handover. We fit, seal and make good, then hand over product data, warranties and any certificate paperwork.
Conservation rooflights in nearby areas
Common questions
Will the council accept it?
We cannot promise an outcome, but a slim conservation profile fitted low in the roof is the type many conservation officers ask for.
Do they suit slate roofs?
Yes — flashings are made for slates and for plain tiles.
Can you copy an original rooflight?
Some makers produce bespoke sizes to match an existing opening. We can survey and quote.
Can they open?
Yes, most are top-hung or side-hung for ventilation and cleaning, with manual or electric operation.
Will I need planning permission in Merseyside?
Most rooflights on English houses do not need planning permission, provided they keep within 150 mm of the roof surface and below the ridge line.
