What a Velux conversion involves

A Velux conversion, sometimes called a rooflight conversion, keeps your roof exactly the shape it is. Roof windows are fitted flush with the slope to bring in daylight and fresh air, and the loft beneath is strengthened, insulated and fitted out as a room.

Because the roof doesn’t get any bigger, it works best where there’s already enough height in the loft, which is more likely when the roof has a generous pitch. We measure it on our survey before recommending it.

Roof windows are usually permitted development, so there’s rarely a planning application, but the room still needs building regulations approval for its floor, stairs, fire safety and insulation. We take care of that for you.

How it changes your roofRoof windows set flush into the existing slope

Benefits

Why choose a Velux conversion

The lightest-touch way to turn a tall loft into a room.

  • Less disruption

    With no dormer to build, the work is quicker and simpler than other conversions.

  • Lower cost

    Usually the most affordable way to turn your loft into a room.

  • Light from above

    Roof windows face the sky, so they bring plenty of daylight and fresh air into the room.

  • Roofline unchanged

    From the street, your house looks exactly as it did before.

Loft bedroom with a grey upholstered bed beneath a roof window looking out over neighbouring rooftops

Key features

What your Velux conversion includes

Simpler than a dormer, but still a proper room built to building regulations.

  • Survey to confirm the head height
  • Permitted development check
  • Structural calculations and floor strengthening
  • Velux roof windows fitted flush with the slope
  • New staircase up to the loft
  • Insulation, boarding and plastering
  • Electrics, and plumbing if you need it
  • Building control approval and sign-off
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Step by step

How a Velux conversion is built

With no change to the roof’s shape, most of the work happens inside the loft.

  1. 01

    Survey

    We measure the height in the loft to make sure a room and a staircase will fit without changing the roof.

  2. 02

    Design and approvals

    We plan the layout and window positions, check permitted development and arrange calculations and building control.

  3. 03

    Floor and stairs

    The floor is strengthened to take a room, and the new staircase is fitted.

  4. 04

    Roof windows

    Openings are formed in the roof and the windows fitted flush with the slope, then sealed weathertight.

  5. 05

    Inside the room

    Insulation, boarding and plastering, then the electrics and plumbing are finished and the joinery fitted.

  6. 06

    Sign-off

    Building control signs the work off and the new room is handed over, ready to use.

Across Nottinghamshire

Roof window conversions in Nottinghamshire

Roof windows are the lightest change you can make to a roof, which makes them useful in Nottinghamshire’s older villages and conservation areas. In the old centre of Mansfield Woodhouse, with its stone walls and pantile roofs, rooflights in the existing slope are often the simpler route for unlisted homes. In East Bridgford, they help keep the steep pantiled roofs of the older cottages and barns intact.

Under national rules, roof windows can usually go in without planning permission, as long as they don’t stand out more than 150mm from the slope. Some councils still want a say in conservation areas: Rushcliffe’s appraisal for East Bridgford asks for permission for roof alterations, so it’s worth checking early. Listed buildings need listed building consent.

Planning council by council

Loft conversion projects

A few of our finished conversions and the rooms inside them.

See all our work
  • Loft bedroom with a roof window above a double bed and white bedside drawers
  • Loft bedroom with mirrored fitted wardrobes shaped to the sloping ceiling, eaves cupboards beneath two roof windows and a tall white radiator
  • Plastered loft room with a roof window in each sloping ceiling, two white panelled doors at the far end and a sunlit oak floor
  • Loft landing with an oak balustrade, a black column radiator, a roof window in the sloping ceiling and black eaves cupboard doors
  • Loft bathroom under two roof windows, with wood slat wall panelling, a traditional column radiator, a back-to-wall toilet and a large banana plant in the foreground

Reviews

What homeowners say

5.0

5.0 out of 5 from 31 Google reviews

  • 5 out of 5 stars

    2 bed semi loft conversion completed to give 3rd bedroom with en-suite. Headroom was tight but in the end we finished with more than expected. Very happy with the overall space gained in a small house. Any minor issues along the way were rectified and the conversion was completed in good time. The team are always polite, helpful and trustworthy!

    bing17 Google review, July 2024
  • 5 out of 5 stars

    What a superb job. We were worried about having our loft conversion done in Dec but we needn’t have been. Nothing was too much trouble. The lads worked hard and we were kept up to date at all times. We love our new room and en suite and can’t praise Mark, Brin, Conan and the Mikes enough. Graham did a superb job on the roof too. Thank you all so much.

    Susan C. Google review, March 2024

FAQs

Velux loft conversions: your questions

Do I need planning permission for Velux windows?

Usually not. Roof windows are normally permitted development if they don’t project more than 150mm from the roof slope and aren’t higher than the ridge. In a conservation area or on a listed building, check with us first, as the council may need to be involved.

Is my loft high enough for a Velux conversion?

We check on our survey. The height in the loft once the new floor is in decides whether there’s room for a usable space and a staircase. If there isn’t, a dormer or hip to gable is usually the answer.

Can I have a bathroom in a Velux conversion?

It’s possible, but it takes more careful planning, because the roof isn’t extended. We look at where the head height is and where the pipes can run before we design the layout.

How much does a Velux conversion cost?

It’s generally the most cost-effective type of loft conversion, because there are no major changes to the roof. The final price depends on the insulation, flooring, electrics and finishes you choose, and we’ll give you a detailed quote.

Still have a question? Call 07925 891 170 or send us a message.

Thinking about velux loft conversions?

Tell us about your house and we’ll let you know what your roof and your council allow, with a free quote.

Other loft conversions

Not sure this is the right type for your home? Compare the alternatives.

  • Aerial view of a flat-roofed dormer clad in dark hanging tiles with a glass Juliet balcony, above a red-brick house with a driveway and fields behind

    Dormer loft conversions

    A dormer builds out from the roof slope with upright walls and a roof of its own, turning the low, sloping edges of the loft into floor space with full head height.

  • New gable clad in red clay hanging tiles with white bargeboards and a pair of white windows whose top panes follow the roof pitch

    Hip to gable loft conversions

    The sloping side of a hipped roof is rebuilt as an upright gable wall. With a rear dormer too, a cramped loft becomes a full-sized room.

  • Grey-clad loft extension with a frameless glass balcony and glazed doors, above a red-brick ground floor with open grey bi-fold doors

    Mansard loft conversions

    The rear roof is rebuilt as a steep wall, typically at 72 degrees, under an almost flat top: the most space of any loft conversion.

Free quote

Book your free loft conversion quote

Tell us a little about your home and what you have in mind for the space.

What happens next

  1. 1We read your enquiryWe go through what you’ve told us about your home and your plans.
  2. 2We get back to youSomeone from our team will be in touch to talk things through and answer your questions.
  3. 3We arrange your free quoteWe look at your loft, confirm what your roof allows and send you a detailed quote.

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