Velux roof window installation, replacement and flashing repairs across Lacock. Supply and fit service — correct flashings as standard. Free no-obligation quotes.
Tell us the job in 30 seconds. No pushy sales, no call-out fee.
📞 Call Now: 01249 247 076In short: Velux and Roof Windows in Lacock: Velux work runs £150–£350 for a flashing repair, £1,200–£2,000 for a new window. We cover Lacock and the surrounding SN15 area with free quotes, no call-out fee, and a 10-year workmanship guarantee. Most leaking skylights need a flashing kit, not a replacement; new windows need the right planning and flashing.
All velux roof windows work across Lacock and surrounding Wiltshire.
Full installation including tile cutting, counter battening and proprietary flashing kit.
Get a quote →Failed or draughty windows replaced in existing opening. Flashing condition assessed.
Get a quote →Most Velux leaks are a flashing failure, not a window failure. Kit replacement without window removal where possible.
Get a quote →Upstand-mounted flat roof lights for extensions. Often combined with flat roof replacement.
Get a quote →Sun tunnels for bathrooms and hallways where a full roof window isn't practical.
Get a quote →Multiple roof window installations for loft conversions. Full coordination available.
Get a quote →The National Trust village sits in a valley with high moisture retention and significant tree canopy — moss growth and lead corrosion are faster here than in open country, and all work must meet NT material standards. For velux roof windows work in Lacock, this means specification choices that reflect the actual conditions rather than generic Wiltshire averages.
National Trust medieval village — virtually every property is listed, clay plain tile is the only acceptable specification, and lime mortar is mandatory throughout. We are 3 miles south from Lacock — 8 minutes — with no travel surcharge and same local knowledge that applies to every property type in this area.
Free quotes. No call-out fees. 8 minutes from Chippenham.
Most leaking skylights need a flashing kit, not a replacement; new windows need the right planning and flashing in Lacock. Lacock is a National Trust village, almost entirely listed — medieval and Tudor timber-framed and stone cottages with clay-tile and stone-slate roofs, under the strictest conservation control in the county. On this kind of stock, the common problems are listed-building roof repairs, hand-made clay tile and stone-slate matching, and heavy moss from the watermeadow humidity — and knowing which you are dealing with is the difference between a lasting fix and money wasted.
Velux roof window installation and replacement in Lacock covers new loft conversion glazing, replacement of failed windows, and flashing repairs. Loft conversions on Lacock's National Trust medieval village properties are a regular driver of Velux installation demand. The most common call, however, is a leaking Velux where the window itself is fine but the flashing kit has failed — a significantly cheaper fix than full window replacement.
We handle the complete roofing element — tile cutting, counter battening, and the Velux proprietary flashing kit correctly installed. Correct flashing is what separates a long-term weatherproof result from a future leak. Rear-slope installations usually proceed without consent even in conservation areas. Front-slope work on listed buildings needs prior discussion. We work alongside builders and loft conversion contractors and can coordinate the roofing element within a larger project programme.
For a new window we check rafter spacing, the room below and planning status; for a leak we diagnose the flashing.
Rear-slope installations are usually permitted development; front-slope, listed and conservation-area need checking first.
A fixed price for install or flashing repair, agreed before work.
The window is fitted and sealed with the correct flashing kit for your specific tile or slate profile.
We test for watertightness, make good internally where agreed, and guarantee the work.
| Job | Typical duration |
|---|---|
| Flashing kit repair | 2–4 hours |
| Replacement in existing opening | half to full day |
| New roof window (rear slope) | 1 day |
| Multiple windows | 1–2 days |
| Dormer roofing / repair | per scope |
Cutting a new opening needs dry conditions so the roof is never left open to rain; we weather-schedule new installations.
Lacock's status as a preserved historic village means listed-building consent and natural materials are effectively mandatory, and access down the narrow medieval streets is tightly constrained. Pavement scaffold and skip permits in Lacock go through Wiltshire Council; on tight streets like East Street, West Street, Church Street we allow extra time for setup and access.
Velux work runs £150–£350 for a flashing repair, £1,200–£2,000 for a new window. Lacock pricing tracks Chippenham, adjusted for access on Lacock's stock.
| Job | Typical range | Notes |
|---|---|---|
| Flashing kit repair / renewal | £150–£350 | Fixes most leaks |
| Replacement in existing opening | £400–£700 | Like-for-like |
| New roof window (standard) | £1,200–£2,000 | Rear slope, fitted |
| Larger / multiple windows | £2,000–£3,000 | Per project |
| Dormer roofing / repair | per scope | Leadwork & weatherproofing |
| Conservation / listed | survey first | Consent may be needed |
No deposit on jobs under £500. On new installations, no payment before materials are on site. VAT included. Payment on completion once watertight.
Covering SN15 and surrounding postcodes.
Workmanship carries our 10-year guarantee; the window and flashing kit carry manufacturer warranties (Velux units typically 10 years) on top.
A day of work with some internal dust where the opening is cut; we sheet the room, protect floors, and clear up fully. You do not need to stay home for external work.
Flashing repairs run year-round; new installations need a dry window so the opening is never exposed to rain. Lacock sits low by the Avon watermeadows, so humidity is high, moss growth fast and drying slow.
"Two Velux windows fitted into loft conversion. Roofing done in a morning, completely watertight six months on."
"Velux leaking for two years — previous roofer said it needed replacing. These identified the flashing as the problem, replaced the kit, dry now. Saved a lot of money."
"Flat roof light on kitchen extension fitted at the same time as flat roof replacement. Kitchen transformed. Good combined value."
Single Velux: £400–£700. Replacement in existing opening: £200–£450. Flat roof light: £500–£900. Flashing repair: £150–£350. Free written quote — call 01249 247 076.
Rear-slope installations usually proceed without consent even in conservation areas. Front-slope work on listed buildings needs prior discussion.
Most leaking Velux windows don't need replacing. The flashing kit has usually failed while the window is sound. Flashing replacement costs £150–£350 versus £400–£700 for a new window. We diagnose correctly before quoting.
Lacock is 3 miles south from Chippenham — 8 minutes. No travel surcharge.
Yes — we work alongside builders across Lacock and Wiltshire. We handle the roofing element and can coordinate with the wider build programme.
Velux recommends a minimum glazed area of 10% of the floor area. For a typical loft bedroom of 12–15m², two standard pivot windows (78×98cm) usually meet this. We advise on sizing during the survey.
Internal condensation indicates insufficient ventilation. Solutions include trickle ventilators, upgraded mechanical ventilation, or a triple-glazed thermally-broken Velux. External condensation is normal and not a fault.
No call-out fees. No obligation. Local roofer covering all of Wiltshire.
01249 247 076Last updated: August 2026