Velux, Roof Window & Skylight Installation in Stockport & East Cheshire
Velux, roof window and skylight installation and replacement across Stockport, Bramhall, Cheadle Hulme, Marple, Hazel Grove and Poynton. Sun tunnels, roof lanterns and flat roof domes. Free written quotes.
Velux Window Installation & Replacement Across Stockport
We install and replace Velux roof windows, skylights, rooflights, sun tunnels and roof lanterns across Stockport and East Cheshire, including Bramhall and Cheadle Hulme, and out to Wilmslow, Poynton, Alderley Edge and Adlington. Velux fitting starts from £550, plus the price of the window you choose. Most units are swapped from inside, so there is no scaffold to pay for, and you choose the exact window to suit your room and budget. We replace Keylite, Fakro and Roto units too.
The same team fits roof lanterns and flat-roof skylights on extensions and kitchen-diners from £550, plus sun tunnels, flat roof domes and conservation rooflights for listed buildings and conservation areas such as Marple Bridge.
Roof windows often come as part of a bigger job. We build the dormers and loft conversions they usually light, and our flat roofing work covers the extension roofs those skylights sit in, so one firm sorts the window and the roof around it. Quotes are free and in writing, and where a leak is down to the flashing rather than the window, we will put the flashing right and tell you straight rather than sell you a replacement you do not need.
See every roof window service at a glanceOur Velux & Roof Window Services
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Velux Installation (New Roof Openings)
- Full Velux range fitted
- Correct flashing kit per roof
- Building Regs handled
- 1–2 day install
Putting a roof window into a slope that doesn't have one is the job that transforms a dark loft, landing or attic room. It is also the job most often done badly: a window cut into the rafters without proper structural trimming, the wrong flashing kit for the roof covering, or a botched insulation collar that lets cold air track around the frame. We install the full Velux range across Stockport and East Cheshire, from standard centre-pivot and top-hung windows through to flat-roof units and sun tunnels, with the structural and weatherproofing detail done properly.
A new opening means cutting and trimming the rafters. On a standard cut-rafter roof this is straightforward, but on a modern trussed roof the trusses cannot simply be cut, they need a structural trimmer or steel support designed in. We assess this on the survey and design the opening correctly before any tile comes off. The flashing kit is matched to your exact roof covering: a standard tile kit for interlocking concrete or clay, a deeper-soaker plain-tile or slate kit for slate and stone roofs (using the wrong kit is the single most common cause of leaks we are later called back to fix on other installers' work).
Most domestic Velux work falls under Permitted Development as long as the window does not project more than 150mm beyond the roof plane and sits no higher than the existing ridge. Building Regulations still apply to the structural opening, and we notify building control and handle sign-off as part of the quote. For listed buildings and conservation areas, see the conservation rooflight section below.
Best suited to
- Dark lofts, landings, or attic rooms with no existing roof window
- Loft conversion projects needing daylight and ventilation
- Trussed roofs requiring designed structural trimming
- Slate and stone roofs needing the correct deeper-soaker flashing kit
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Velux Replacement & Upgrades
- Like-for-like or upgrade
- Inside fit where access allows
- New flashing kit included
- Manual, electric or solar
A Velux window has a working life of around 20 to 25 years. Past that, the seals perish, the drainage channels block, the timber frame swells, and the glazing units mist as the sealed gas escapes. Once a unit is 15 to 20 years old, replacement is almost always more cost-effective than chasing repairs, and a modern unit brings far better insulation, noise reduction and UV control than anything fitted before the mid-2000s.
Most replacements are completed from inside the room where access allows, with no scaffold required, which keeps the cost down and the disruption to a single day. Where the roof pitch, height or position makes inside access impractical we will say so on the survey and price scaffold separately and transparently, never as an after-the-fact extra. A fresh flashing kit is fitted as standard with every replacement (re-using a 20-year-old flashing on a new window is a false economy and a leak waiting to happen). We replace like-for-like, or upgrade you to a larger unit, a different operation method (manual, electric or solar), or higher-spec glazing while the roof is open. Velux also makes side-by-side, 2-in-1 and 3-in-1 configurations, plus roof balcony and terrace windows, and we can reconfigure to one of these while the roof is open.
We replace Velux and other roof window brands (Keylite, Fakro, Roto) across Stockport, Bramhall, Cheadle Hulme, Marple, Hazel Grove and Poynton. Old laminated units are disposed of properly as part of the job.
Best suited to
- Roof windows 15 to 25+ years old that are past economic repair
- Misted or blown double-glazed units with failed seals
- Homeowners upgrading to electric, solar, or higher-spec glazing
- Like-for-like swaps of any roof window brand, fitted from inside
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Velux Window Leak & Flashing Repairs
- Leak diagnosis
- Flashing renewal
- Watertight reseal to the roof
- Same-day callouts
A leaking roof window is rarely the glass itself. Most of the time it is the flashing where the window meets the roof covering, and that is roofing work rather than a window repair. A surprising number of "leaking Velux" callouts turn out to be a flashing kit that was the wrong type for the roof from the day it was installed, or condensation being mistaken for a leak because the insulation collar around the frame was never fitted correctly.
We diagnose properly before quoting, establishing whether water is getting in around the flashing or whether it is condensation rather than rain ingress at all, because the fix for each is completely different. Where the window itself is sound, a fresh flashing kit and a proper watertight reseal into the roof puts it right for a fraction of replacement cost. We do not repair the window unit itself: where the Velux has failed, with perished seals, a misted glazing unit or a frame that no longer closes flush, we replace it rather than patch a window that is already past its life.
Same-day callouts are available across Stockport, Bramhall, Cheadle Hulme and Hazel Grove for active leaks, with temporary watertight protection until a permanent fix can be scheduled.
Best suited to
- Water staining on the ceiling or wall around the roof window
- Flashing that has lifted, split or was the wrong kit from the start
- Windows "fixed" before that are still leaking
- Condensation being mistaken for rain ingress around the frame
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Roof Lanterns & Flat Roof Skylights
- Lanterns & fixed flat units
- Extension & kitchen specialists
- Upstand & kerb detailing
- Watertight integration
Flat-roof glazing is a different job from a pitched-roof Velux, and it is where most of the bigger-ticket work sits. Single-storey rear extensions, kitchen-diners and open-plan spaces are transformed by a roof lantern or a run of flat fixed skylights, and the demand for this has grown sharply alongside the extension boom across Stockport and the East Cheshire commuter belt.
The critical detail on a flat roof is the upstand and the waterproofing integration. A lantern or flat rooflight sits on a timber kerb that has to be built, insulated and dressed into the flat roof covering correctly, whether that is EPDM rubber, GRP fibreglass or felt. Get the upstand height or the membrane dressing wrong and it leaks, usually within the first year. Because we are a roofing firm rather than a window-only installer, we build the kerb and tie it into the flat roof system as one job, which removes the gap in responsibility that causes most flat-rooflight leaks (the classic "the window fitter blames the roofer and the roofer blames the window fitter").
Where a flat roof is nearing the end of its life anyway, combining the rooflight installation with a flat roof replacement is almost always more cost-effective than doing them separately a year apart.
Best suited to
- Single-storey rear extensions and kitchen-diner projects
- Open-plan spaces needing a roof lantern as a feature
- Garage and outbuilding conversions on flat or low-pitch roofs
- Rooflight plus flat roof replacement combined as one job
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Conservation & Heritage Rooflights
- Conservation Velux range
- Low-profile, central glazing bar
- Listed & conservation areas
- Officer-compliant detailing
In a conservation area or on a listed building, a standard roof window will get refused or flagged by the council's conservation officer. The requirement is usually a conservation rooflight: a low-profile unit that sits flush or near-flush with the roof line, with a central vertical glazing bar that mimics the proportions of a traditional cast-iron rooflight, finished in black rather than grey or aluminium. Velux makes a dedicated conservation range for exactly this, and there are heritage cast-iron-style alternatives where the officer requires a closer match.
This work is common across the conservation areas east of Stockport, Marple Bridge in particular, and through the East Cheshire villages where listed cottages and barn conversions are frequent. The job is as much about the planning and conservation engagement as the installation: getting the right unit specified, the flashing detailed so the window sits as low as the covering allows, and the paperwork right so the work passes rather than gets enforcement action after the fact. We handle the rooflight specification and the conservation-officer-facing detail as part of the quote.
For the brick, stone and lead heritage work that often accompanies these properties, see our lead services and chimney pages.
Best suited to
- Listed buildings and Grade II properties
- Conservation areas such as Marple Bridge and the East Cheshire villages
- Period cottages and barn conversions needing a flush, low-profile unit
- Projects needing conservation-officer-compliant rooflight specification
Skylight & Roof Window Installation in Stockport
A skylight, a rooflight and a roof window are the same job to a roofer: an opening in the pitch, the right unit for the room, and flashing dressed correctly into the covering. Our roof window installers fit and replace skylights across Stockport and East Cheshire in every major brand, including Velux, Keylite, Fakro, Roto and Dakstra, so you are never tied to one manufacturer or one price point.
Whichever name you use, the process is the same. We survey the roof, quote in writing, then handle the structural opening, the flashing kit and Building Regulations sign-off as one job. Skylight installation in Stockport starts from £550 in labour plus the window you choose, and most replacements are fitted from inside with no scaffold. If you are searching for skylight fitters or roof window installers near you, the team behind every job on this page is our own, based at Hallam Mill in Stockport.
How Your Installation Works
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Survey
We visit, measure the existing window or the proposed opening, and check the roof structure and covering so the quote is right first time. Free, and usually same or next working day.
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Written quote
A fixed, itemised price in writing: labour, the window options in your size, the flashing kit for your covering, and scaffold only if it is genuinely needed. No verbal estimates.
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Fitting day
Most replacements are done from inside in a day. Floors are sheeted, the old unit is disposed of properly, and a new flashing kit goes in as standard.
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Sign-off
We check the weatherproofing detail, notify building control on new openings, and leave you with the paperwork and our workmanship guarantee.
What our customers say
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★★★★★
“We've just had the Velux windows replaced in our attic conversion in Heaton Moor by Dan and his team. After struggling to find a company to do the work, Dan impressed us with his professionalism and knowledge. He gave us good advice on the type of window to buy and provided a detailed written quote. The windows were expertly fitted by Matt and Cody who were pleasant and considerate workers. I've already recommended Daniel Scott Roofing to a friend as we were so pleased with their work in our home.”
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★★★★★
“Dan and the team have just finished replacing some Velux windows for us. Very happy with the work and would 100% recommend them.”
Accredited & Qualified
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CORC Accredited Member
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CITB Certified
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City & Guilds
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NFRC Competent Person
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NWRTG Member
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NVQ Qualified
How Much Do Velux Windows Cost in Stockport?
Velux fitting starts from £550, and you add the cost of the window you choose, so the final price depends on the unit. For a standard replacement fitted from inside, most Stockport jobs land between £700 and £1,400 all in. New installations into an existing roof slope range higher once the opening is cut, trimmed and weatherproofed with a fresh flashing kit. Leak and flashing repairs to the roof around a window start at £150. Larger flat-roof rooflights and lanterns sit higher again, with conservation-grade units priced separately to cover the heritage-specification frame.
Prices reviewed August 2026.
What Affects the Final Price
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The window you choose We quote the labour, and you choose the actual Velux unit. A small manual centre-pivot costs far less than a large electric, solar or triple-glazed window, so the unit you pick is the single biggest variable in the total. You pay for the window you choose plus our labour to fit it.
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Window size Velux sizes run from small MK04 units up to large UK08 and larger. A larger window costs more in the unit itself and takes longer to fit on the roof, particularly where an existing aperture has to be widened.
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Roof covering Interlocking concrete tile takes a standard flashing kit. Slate, stone and plain tile need the deeper-soaker EDN or EDP kit, which is dearer and slower to dress. Using the wrong kit is the most common cause of later leaks.
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Roof structure Cut-rafter roofs trim easily for a new opening. Trussed roofs need a designed structural trimmer or steel support to avoid cutting a load-bearing member, which adds to both materials and labour.
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Access Most replacements are fitted from inside the room with no scaffold required. Where the roof pitch, height or position makes inside access impractical, scaffold is priced separately and transparently at the visit.
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Operation & glazing Manual centre-pivot units are the entry point. Electric, solar and INTEGRA powered units, along with higher-spec triple-glazed and acoustic glass options, sit at the upper end of each range.
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Conservation spec Conservation rooflights use a different frame profile with a central glazing bar and a low-profile flashing. They cost more than a standard unit and may need lead-detailed dressing into the surrounding covering on listed work.
| Service | Typical price, fitted |
|---|---|
| Velux replacement (small, e.g. MK04) | £700 – £1,000 |
| Velux replacement (standard / mid) | £900 – £1,400 |
| New Velux installation (new opening) | £900 – £2,500 |
| Roof window leak & flashing repair | £150 – £600 |
| Roof lantern / flat skylight (installed) | £1,500 – £4,000+ |
| Conservation rooflight (supply & fit) | £1,200 – £2,200 |
Velux Sizes & Codes Explained
Velux codes combine the model (GGL is centre-pivot pine, GGU is white polyurethane, GPL and GPU are top-hung) with a size code for width and height. These are the sizes we fit most often in Stockport:
| Code | Size (W x H) | Typical fitted price (replacement) |
|---|---|---|
| CK02 | 55 x 78cm | £700 – £1,000 |
| CK04 | 55 x 98cm | £700 – £1,000 |
| MK04 | 78 x 98cm | £700 – £1,000 |
| MK06 | 78 x 118cm | £900 – £1,400 |
| MK08 | 78 x 140cm | £900 – £1,400 |
| SK06 | 114 x 118cm | Priced at the visit |
| UK04 | 134 x 98cm | Priced at the visit |
| UK08 | 134 x 140cm | Priced at the visit |
Fitted prices show our labour plus a typical manual unit in that size. Electric, solar and conservation versions cost more. Larger units are priced at the visit because access and flashing requirements vary.
These figures are indicative for the Stockport area in 2026 and show our labour plus a typical window. We quote the labour from £550 and you add the cost of the window you choose, so your total moves with the unit. Every quote is in writing at the visit, with no verbal estimates and no costs added once work starts.
No obligation • Same or next-working-day visits across Stockport
Velux & Roof Window FAQs
Do I need planning permission or Building Regulations for a Velux window?
Most Velux installations in Stockport fall under Permitted Development, provided the window projects no more than 150mm beyond the roof plane and sits no higher than the ridge. Building Regulations still apply to the structural opening. We notify building control and handle sign-off as part of the quote. Listed buildings and conservation areas need a conservation rooflight instead.
How long does Velux window installation take?
A straightforward replacement is usually done in a day, fitted from inside the room. A new installation into a roof with no existing window typically takes one to two days, depending on the roof structure and the flashing detail. We confirm timings in your written quote.
Do you supply the window, or do I buy it myself?
Either. Most customers ask us to supply and fit, and we quote the labour from £550 plus the price of the unit. If you have already bought a window, we will fit that instead. Just tell us the model code and we will confirm the right flashing kit for your roof.
Can you replace a Velux window without scaffolding?
Usually, yes. Most replacements are completed from inside the room, which keeps cost and disruption down. Where the pitch, height or position of the window makes inside access unsafe or impractical, we say so at the survey and price scaffold separately, never as a surprise extra.
How do I find my Velux window size or model code?
Open the window and look for the metal data plate on the top or side of the sash. It shows the model and size code, for example GGL MK04. Send us that code with a photo and we can price a like-for-like replacement without a visit in most cases. Our size table above lists the common codes and dimensions.
Do you repair leaking Velux windows?
Yes, where the leak is the flashing or the seal between the window and the roof, which is the cause in most cases. We renew the flashing kit and reseal the unit into the covering. If the window itself has failed, with misted glazing or perished seals, replacement is usually the better value and we will tell you straight.
Is it a leak or just condensation?
If the water appears in cold weather, sits on the glass or frame, and there is no staining after heavy rain, it is usually condensation rather than rain getting in. A genuine leak tends to show as staining around the top corners of the window after rainfall. We check both at the survey, because the fix for each is completely different.
Do you fit conservation rooflights?
Yes. For listed buildings and conservation areas such as Marple Bridge we fit the Velux conservation range and heritage cast-iron style alternatives, with the low-profile flashing and central glazing bar conservation officers expect. We handle the specification detail as part of the quote.
Areas we cover for Velux & Roof Windows
We install and replace Velux windows, roof windows and skylights across Stockport and the surrounding area.
We also cover roofing right across East Cheshire, including roofers in Wilmslow, Alderley Edge, our Handforth page, roofing in Macclesfield, Bollington, roofers out in Adlington, Poynton, roofers in Disley and Knutsford.
Don't see your area listed? We almost certainly still cover it. Get in touch and we'll confirm.
Get a Quote for Velux & Roof Windows
Call, email, or fill in the form. We'll get back to you with a free written quote, usually the same day.
Phone
Address
G6 Hallam Mill, Hallam Street,
Stockport,
SK2 6PT
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Other Services We Offer
We cover the complete range of roofing work, from a single broken tile to a full commercial re-roof.
