⭐ 4.9/5 · 127 Google Reviews · Roof Window Specialists
Velux Window Installation Winchester
Velux and roof window installation across Winchester and Hampshire. Supply, installation, correct flashing and building regulation compliance — free surveys.
Tell us the job in 30 seconds. No pushy sales, no call-out fee.
20+
Years Local
127
5★ Reviews
24/7
Emergency
10yr
Guarantee
Need velux & roof window installation in Winchester? We provide free surveys, fixed written quotes and a 10-year workmanship guarantee, with no call-out fee. Typical work is scheduled within the week and emergencies attended 24/7. Call 01962 809171 or book a callback within 2 hours.
Do You Actually Need Velux & Roof Window Installation?
A roof window transforms a loft, but the flashing detail decides whether it stays watertight. Here is what to consider before fitting one on a Winchester roof.
A dark loft room that needs natural light
An existing roof window that leaks around the flashing
A loft conversion needing building-regs daylight and ventilation
A tired, draughty old skylight due for replacement
When it is not the answer: If the loft is not being converted to a habitable room, a cheaper fixed rooflight may serve — you do not always need a full opening Velux. Read the full guide.
Velux roof windows are one of the most common roofing add-on requests we receive across Winchester. Most loft conversions and many master bedroom upgrades include a Velux or similar roof window as part of the scope. Installation requires correct flashing — the junction between the window frame and the surrounding tile work is the primary leak risk if not properly specified and fitted. We install Velux and compatible brand roof windows with factory-supplied flashing kits and ensure the surrounding tile work is properly cut, rebedded and pointed.
Planning and Conservation Area Considerations
Most Velux windows on rear roof slopes are permitted development and do not require planning permission, provided the window does not project more than 150mm above the existing roof plane and is not on a principal elevation facing a highway. In Winchester's conservation areas, Velux windows on principal elevations are not permitted development and consent is very unlikely to be granted. We advise on planning requirements at survey stage at no charge.
Free survey and written quote. No call-out fee. No obligation. Call 01962 809171.
Customer Reviews
What Winchester Customers Say
★★★★★
“Velux installation on our Weeke 1930s semi — two FK06 windows on the rear slope. Correct flashing, tiles re-dressed properly. No leaks, job done in one day.”
Richard K. · Weeke, Winchester
★★★★★
“Single Velux on our Fulflood Victorian terrace. They advised on planning correctly and the installation is perfect.”
Susan M. · Fulflood, Winchester
★★★★★
“Two Velux windows on our Badger Farm extension. Quick, tidy job. Exactly what we needed.”
Velux Windows in Winchester — Why Homeowners Choose Us
Genuinely Local
We are based in Winchester and cover the surrounding Hampshire area. Not a national company routing your enquiry to a subcontractor — it is our team on every velux windows job.
NFRC Registered
Membership of the National Federation of Roofing Contractors is not automatic. It requires technical assessment, verified insurance and a signed commitment to the NFRC code of practice. You can verify our registration at nfrc.co.uk.
Written Guarantee
10-year written workmanship guarantee. The guarantee document is yours to keep.
Transparent Pricing
The written quote is the price. Scaffolding, waste disposal and VAT are always included. No additions discovered during the job.
Call 01962 809171 to arrange a free velux windows survey across Winchester and Hampshire. Same-week appointments available.
Coverage
Velux Windows Across Winchester and Hampshire
We carry out velux windows work across Winchester city and the surrounding Hampshire area — Eastleigh, Romsey, Chandler's Ford, Bishop's Waltham, New Alresford, Kings Worthy, Twyford, Colden Common, Otterbourne and Compton, plus all surrounding villages within approximately 15 miles of Winchester city centre.
Every velux windows job in this area — regardless of location — gets the same approach: free survey with written report, fixed-price quote, the correct material specification for the specific property, and a written workmanship guarantee on completion.
Not sure if we cover your area?
Call 01962 809171 and we will confirm immediately. If we cover your location, we will arrange a free survey same-week.
Full Guide
Velux Windows in Winchester — Complete Guide
The Correct Approach to Velux Windows
We carry out all velux windows work in Winchester to the same standard: free survey with written report, fixed-price written quote, correct material specification for the specific Winchester property, and a written workmanship guarantee on completion. NFRC registered, fully insured to £5m public liability. Free survey — call 01962 809171.
Technical Guide
Velux Window Specification for Winchester Properties
The most common Velux installation error on Winchester properties is specifying the wrong flashing kit. Velux manufactures flashing kits specific to each tile profile — plain clay plain tiles, concrete interlocking tiles, natural slate — and each kit is engineered for a specific tile thickness and lap. Using a concrete tile flashing kit on a clay tile roof, or fitting a generic kit where a tile-specific one is required, creates a gap at the junction between the window frame and the tile surface that allows water ingress. Every Velux installation we carry out uses the manufacturer-specified flashing kit for the tile profile confirmed at survey.
Structural Considerations for Winchester Lofts
Winchester period properties — Victorian terraces in Hyde and Fulflood, 1930s semis in Weeke and Chandler's Ford — typically have rafter spacings of 400–450mm. A standard Velux CK02 (550mm wide) opens across one or two rafter bays depending on the specific spacing. Where the window opening spans a rafter, a trimming header between the adjacent rafters must be installed. This adds 2–4 hours to the installation and is confirmed and quoted at survey stage. We never install a Velux that requires structural trimming without first confirming it in the written quote.
Energy Performance and Building Regulations
For Winchester loft conversion projects where the loft becomes a habitable room, the Velux windows must meet Part L thermal performance requirements. Velux's GGL and GGU ranges meet current Part L standards. For habitable room conversions, the total window area must not exceed 25% of the floor area. We confirm building regulations compliance requirements at survey stage for all Winchester loft conversion Velux installations.
Winchester Insight
Velux Installation Quality — What Differentiates Good from Poor Work
The Flashing Junction — Where Most Failures Occur
The junction between the Velux window frame and the surrounding tile work is the critical weatherproofing point. A correctly installed manufacturer flashing kit creates a continuous weathertight seal at this junction. The most common installation failures we survey in Winchester are: generic (non-tile-specific) flashing kits cut to fit rather than manufacturer-specified kits; undertile flashing not installed below the tile course above the window; and side flashings not correctly integrated with the cut tile courses on both sides. Each of these creates a gap that allows wind-driven rain to enter at the junction.
Structural Quality — Trimming Headers
A trimming header correctly sized and positioned transfers the rafter load around the window opening to the adjacent rafters. An undersized header or one installed without correctly seated joist hangers will deflect under load, causing the window frame above to rack and the weathertight seal to fail within 2–5 years. We use manufacturer-specified structural timber and correctly specified joist hangers on every Winchester Velux installation that requires structural trimming.
Getting Your Velux Quote Right
A complete Velux installation quote should specify: the window model and size, the flashing kit model number (confirming it is tile-specific), whether structural trimming is required and the timber specification, whether the ceiling will be made good after installation, and the installation guarantee. A quote that says simply "supply and fit Velux window" without specifying the flashing kit has not been thought through to the level of detail required for a weathertight installation. Call 01962 809171 for a free survey and detailed written quote.
We confirm size, position, the building-regs daylight requirement and any structural trimming needed.
2. Written quote
Fixed price including the tile-specific flashing kit, within 48 hours.
3. Scheduling
Booked to a firm date once the correct flashing kit is ordered.
4. The work
Opening formed and trimmed, window fitted with the manufacturer flashing kit matched to your exact tile, tiles redressed both sides.
5. Cleanup & sign-off
Debris cleared, manufacturer and workmanship guarantees handed over.
Timescales
How Long Does It Take?
Job
Typical duration
Single Velux (like-for-like)
1 day
New opening + structural trim
1–2 days
Two windows
2 days
The roof is opened only as far as can be made watertight the same day; weather is watched closely.
Access
Getting Safely onto Winchester Roofs
Roof-window work runs from a tower or scaffold for safe working at the opening. Scaffold is specified for: most installations — safe standing time at the opening is essential - always itemised in your written quote, never a hidden extra, and we arrange it.
The tight lanes of the historic core — around Kingsgate and the Cathedral Close — mean scaffold often oversails the public footway and needs a licence, while post-war estates like Stanmore and Harestock have easy driveway access. Pavement scaffold and skip permits go through Winchester City Council; allow a few working days on streets like Great Minster Street, Kingsgate Street, Canon Street where space is tight.
Worked example: Two like-for-like roof windows in a 1930s Weeke loft with the correct clay-tile flashing kit: around £1,600.
Deposit for the window order; balance on completion. VAT included.
Covering SO22, SO23, SO21 and surrounding postcodes.
Guarantee
The Guarantee in Plain Terms
The installation and flashing carry a 10-year workmanship guarantee; the window carries the manufacturer warranty (typically 10–20 years).
Covered: workmanship for 10 years, in writing, transferable if you sell.
On top: manufacturer warranties on materials (terms vary by product).
Not covered: storm or impact damage - that is an insurance matter, and we will document it for your claim.
If a fault appears in covered work, we come back and put it right. No quibbling, no re-charge.
Good to know
What It Is Like While We Work
A day or two of work with brief internal access to the loft; dust sheeting protects the room below the opening. You do not need to stay home for external work - we just need power and access agreed in advance.
We form the opening in a dry window and never leave the roof open overnight. Winchester’s Itchen valley position raises humidity on the valley floor, so moss and slow drying affect Winnall and Bar End more than the exposed chalk uplands.
FAQ
Velux Window Installation Winchester — Questions
Supply and installation of a standard Velux window (550×980mm): £600–£950 depending on access and tile type. Conservation-grade centre-pivot: £800–£1,200. Free survey and fixed quote.
Most Velux windows on rear slopes are permitted development. Conservation area properties and front/principal elevations require planning consent — often refused on conservation areas. We advise at survey stage.
The most common sizes are 550×980 (CK02) and 660×1180 (FK06). We advise on size relative to the structural opening, rafter spacing and your ceiling height at survey stage.
A single Velux window on an accessible pitch typically takes 3–5 hours. Two windows same-day. We include all flashing, redressing of surrounding tiles and making good.
On rear slopes where permitted development rights apply, yes. On principal elevations or in conservation areas where PD does not apply, we advise on consent requirements. We do not install windows that require consent that has not been granted.
Yes — we use the manufacturer-supplied flashing kit for every installation. Incorrectly flashed Velux windows are the most common cause of roof leaks we investigate on Winchester properties that have had windows added by others.
Yes — all of Winchester and surrounding Hampshire. Call 01962 809171 to arrange a free survey.
Yes — free surveys with written condition reports across Winchester and all surrounding Hampshire areas. Same-week appointments available. Call 01962 809171.
Timelines vary by job scope and are confirmed in the written quote. Most velux windows jobs on Winchester residential properties are completed within 1–3 days. We give a day-specific timeline at quote stage.
Yes — £5m public liability insurance and employers' liability. NFRC registered. We provide insurance documentation on request before any Winchester job starts.
