VELUX Window Installation in Cheltenham & Gloucestershire

A VELUX roof window is one of the most reliable ways to bring real daylight into a loft, a landing, a kitchen extension or a tired box room. Fitted properly, it turns a dim space into one of the brightest rooms in the house. Fitted badly, it becomes the thing you worry about every time the weather turns. We install VELUX windows as a specialism — not as a sideline between other roofing jobs — for homeowners across Cheltenham, Gloucester, Cirencester, Tewkesbury, Stroud and the wider Cotswolds.

This page sets out everything worth knowing before you commit: the difference a specialist makes, the VELUX window types and options, the glazing and performance choices, how the installation actually works, where building regulations and Cotswold conservation rules come into play, what it tends to cost in 2026, and how we cover Cheltenham and Gloucestershire. If you would rather just talk it through, you can get a quote at any point.

What a VELUX window installation involves

VELUX is a brand of roof window — a glazed unit set into the slope of a pitched roof, opening on a hinge so it sits flush with the surrounding tiles or slates. The name has become shorthand for the whole category, in the same way people say “Hoover” for a vacuum, but a genuine VELUX unit is a specific, engineered product with its own flashing systems, sealing details and ironmongery. We install VELUX products, and we fit them the way they are designed to be fitted.

A proper installation is more than dropping a window into a hole in the roof. It means cutting and trimming the rafters correctly to form a structurally sound opening, building a sound timber liner, weathering the unit into the roof covering with the right flashing kit for your tiles or slates, and finishing the reveal inside so the plaster line is crisp and square. Each of those steps is where a roof opening either lasts for decades or starts to cause problems. Getting them all right, every time, is what we do.

New installations and full replacements

We carry out two kinds of VELUX work. The first is a brand-new installation, where there is no existing rooflight and we form a fresh opening in the roof. The second is a full replacement, where an old or failed roof window is taken out and a new VELUX unit goes in, with the opening, liner and flashing brought up to current standard at the same time. We do not patch or repair tired units — if a window has reached the end of its life, a clean replacement is almost always the better outcome.

Why use a skylight specialist in Cheltenham

Plenty of trades will fit the occasional roof window. We do it as our trade, day in and day out, which changes a few things. We understand how the different roof build-ups around Gloucestershire behave — from the clay and concrete tiles common on post-war Cheltenham housing to the natural Cotswold stone slates you find around Winchcombe, Bishop’s Cleeve and the villages out towards Stroud. Each covering needs a different flashing approach, and matching it correctly is the difference between a window that stays watertight for thirty years and one that weeps after the first hard winter.

Weathering is where most roof window problems begin, so it is where we put the most care. The flashing kit, the upstand height, the way the unit ties into the felt or membrane below the tiles — these details are invisible once the job is done, but they decide whether daylight is the only thing that ever comes through the opening. A specialist also gets the things you can see right: a square, well-plastered reveal, a neat external trim, and a finish that looks intentional rather than added on as an afterthought.

• The right unit for your roof. Pitch, covering and structure all influence which VELUX product and flashing kit suit your home. We match the window to the roof rather than forcing a fit.
• Detailing built to last. The flashing, soakers and upstand are sized and dressed for your specific tile or slate, so the opening stays sealed for the long term.
• A clean finish inside and out. You look at a roof window every day, so the reveal, plaster line and external dressing all matter to us.
• A fixed written quote. You know the product, the work and the price before anything starts. No moving numbers.

VELUX window types and options

One of the reasons VELUX has stayed the default choice for so long is the breadth of the range. There is a window for almost every roof and every room, and choosing well at the start makes a noticeable difference to how the finished space feels.

Centre-pivot windows

The classic VELUX. The window pivots on a central hinge, so the top half tilts inwards as the bottom swings out. They are robust, simple and well suited to loft conversions and rooms where the window sits a little higher on the wall. The pivot action also makes the outer pane easy to clean from inside — a genuine advantage on a roof you cannot otherwise reach.

Top-hung windows

A top-hung VELUX opens outwards from a hinge at the top, like a flap. Because the glass swings clear of your head, it gives an unobstructed view and lets you stand right at the window, which is ideal for loft bedrooms with a low wall plate or for taking in a view across the Cotswold escarpment. Many homeowners pair a top-hung and a centre-pivot to balance head height with ease of cleaning.

Flat roof windows and curved glass

VELUX also makes units designed for flat or very low-pitch roofs, with a low-profile flat glass or a gentle curved-glass top that sheds rainwater cleanly. These suit single-storey kitchen extensions and flat-roof outriggers, and they overlap with the work we cover on our flat roof skylight installation page. If you are weighing a roof window against a larger feature, our guide to a VELUX versus a roof lantern extension is a useful read.

Manual, electric and solar operation

Lower windows can be opened by hand or with a pole. For windows that are out of reach — high on a vaulted ceiling or over a stairwell — electric or solar-powered operation is the sensible choice, with a remote and a rain sensor that closes the window automatically when the weather turns. Solar units run on their own small panel and need no wiring, which keeps the installation simpler. We cover this in more depth on our solar-powered skylight installation page.

Sun tunnels for windowless spaces

Where there is no room for a full window — a windowless bathroom, a dark hallway, a deep landing — a VELUX sun tunnel channels daylight down a reflective tube from the roof into the ceiling below. It is a neat answer to a space that feels permanently gloomy, and far less disruptive than forming a full opening.

Glazing and performance

The glazing you choose shapes how the room feels and how the window performs through a Gloucestershire winter. Standard double glazing is the baseline, but it is worth understanding the upgrades, because the right glass solves problems you might otherwise live with for years.

Energy-efficient glazing keeps heat in and brings the window’s U-value down, which matters both for comfort and for meeting building regulations. We explain the numbers in plain terms on our rooflight U-values explained page, and we set out exactly what the rules ask for on our Part L rooflight U-value requirements page. For a room you really want to keep warm — a loft bedroom, a home office under the eaves — a triple-glazed rooflight installation is worth considering, and we cover the numbers on our triple-glazed rooflight cost page.

• Laminated inner pane. Improves safety and noticeably cuts noise — valued by anyone who has tried to sleep under a single-glazed rooflight in a downpour.
• Toughened outer pane. Standard on most units for impact resistance against hail and debris.
• Solar-control coating. Reduces overheating in south-facing rooms through the summer, which matters on bright Cotswold afternoons.
• Anti-condensation and self-cleaning coatings. Available options that keep the glass clearer and easier to maintain on a roof you rarely reach.

It is also worth being clear about how a quality roof window compares with budget alternatives. We lay that out honestly in our guide to VELUX versus cheaper skylight alternatives, so you can decide where your money is best spent.

How the installation works

We try to make the whole process calm and predictable. Here is roughly how a VELUX installation runs from first contact to a clean finish.

1. Survey and fixed quote

We come and look at the roof and the room, take measurements, check the pitch and the covering, and talk through where the window will sit and how it should open. You then receive a fixed written quote setting out the product, the work and the price. No part of it moves once you have accepted it, barring something genuinely unforeseen we would always flag first.

2. Forming the opening

On the day, we protect the room below, then form or adjust the opening in the roof. That means carefully cutting the covering, trimming the rafters where needed to take the load correctly, and building a sound timber liner for the window to sit in. On a replacement, we remove the old unit and bring the opening up to standard at the same time.

3. Fitting and weathering the unit

The VELUX window goes in, is squared and fixed, and is then weathered into the roof with the correct flashing kit for your tiles or slates. This is the part that keeps the opening watertight, so it is the part we never rush. The external trim is dressed neatly so the finish looks deliberate from the ground.

4. Internal finish

Inside, we form and finish the reveal — the splayed plaster around the window that lets light spread into the room. A square, crisp reveal is what makes the difference between a window that looks fitted by a specialist and one that looks added on. We leave the site clean at the end, with floors protected throughout and waste taken away.

You can see the full scope of what we offer on our services page if you want the broader picture.

Building regulations and planning in the Cotswolds

Most VELUX installations are straightforward from a regulatory point of view, but it pays to know where the lines sit — especially in a part of the country with as much protected character as Cheltenham and the Cotswolds.

Replacing a roof window like-for-like, or adding one to an existing roof slope, usually falls under permitted development and does not need planning permission. There are conditions: on most house types the window should not project more than 150mm beyond the plane of the roof, and it should not sit above the highest part of the roof. Building regulations still apply to the structural opening and the thermal performance of the glazing, which is one more reason to use a specialist who builds to that standard as a matter of course.

Where extra care is needed is in conservation areas and on listed buildings, which are common across central Cheltenham’s Regency streets, Winchcombe, Cirencester and the Cotswold villages. In a conservation area, permitted development rights can be restricted — particularly on roof slopes facing a road — and a conservation rooflight with a slim, low-profile, often black or charcoal finish may be required to keep the roofline sympathetic. On a listed building, listed building consent is generally needed for any new opening. We are familiar with these constraints and will tell you plainly where you stand before any work is planned. When in doubt, a quick word with the relevant local planning authority — Cheltenham Borough, Cotswold District, Tewkesbury Borough or Stroud District depending on where you are — settles it.

Indicative cost in 2026

Honest numbers help you plan, so here are realistic 2026 figures for a supplied-and-fitted VELUX window in the Cheltenham and Gloucestershire area. These are indicative only — every roof is different, and the figure that matters is the fixed written quote we give you after seeing the job.

• A standard centre-pivot VELUX into an existing loft, supplied and fitted: typically £1,200 to £1,800 depending on size, glazing and access.
• A like-for-like full replacement of an old roof window: often £900 to £1,500, as the opening already exists.
• An electric or solar-operated window with a rain sensor: add roughly £300 to £600 over the manual equivalent.
• A larger or premium unit, or a conservation-style window for a protected roof: from £1,800 upwards.

Costs rise with size, glazing upgrades such as triple glazing, awkward access — a steep roof or a town-centre terrace with no easy scaffold line — and any structural work needed to widen an opening. For a fuller breakdown of where the money goes, see our VELUX window cost page. Whatever the figure, you will always have a fixed price in writing before we start.

Across Cheltenham and Gloucestershire

We are based in Cheltenham and work throughout the town and the wider county. That means the Regency terraces and Edwardian villas of Cheltenham itself, the post-war and modern housing of Gloucester, the market-town roofs of Tewkesbury and Cirencester, and the stone-slate cottages of Winchcombe, Bishop’s Cleeve, Stroud and the surrounding villages. Each brings its own roof covering and its own quirks, and we adjust the flashing and detailing accordingly rather than applying a one-size approach.

If you are out towards the Cotswold edge, the natural stone slates need a different hand to the interlocking concrete tiles you find on a newer estate — and we treat them differently. You can see the full list of places we serve on our areas we cover page. Wherever you are in Gloucestershire, the same approach applies: specialist work, a fixed written price and a finish we are happy to put our name to.

Why choose Aspect Skylights Cheltenham

VELUX windows are what we plan, fit and finish, day in and day out. We do not treat them as a quick add-on to a bigger roofing job — they are the job. That focus shows in the weathering, the reveal and the way the finished window simply looks right from inside and out.

You get a fixed written quote before any work begins, a tidy site that is protected and cleared each day, and a written guarantee on our workmanship. Manufacturer product warranties apply on top of that, depending on the unit you choose. If that is the standard you want for your project, we would be glad to talk it through — get a quote and we will take it from there.