Velux roof window installation, replacement and flashing repairs across Chippenham and Wiltshire. Supply and fit service with proper weatherproof flashings as standard. Free no-obligation quotes.
From a single new Velux on a Victorian terrace to a full run of roof lights on a Pewsham extension, we install, replace and repair roof windows across all Wiltshire property types.
Full installation including tile cutting, counter battening and proprietary Velux flashing kit. We handle the roofing element completely — correct flashing is what separates a long-term weatherproof installation from a future leak.
Get a quote →Failed, draughty or broken roof windows replaced in the existing opening. We assess whether flashing replacement is needed at the same time — often it is on windows over 15 years old.
Get a quote →Leaking around an existing roof window is almost always a flashing failure — the window itself is usually fine. We replace proprietary flashing kits without removing the window where possible.
Get a quote →Upstand-mounted flat roof lights for extensions, kitchen rear extensions and single-storey conversions. Often combined with a flat roof replacement for the most cost-effective install.
Get a quote →Velux or equivalent sun tunnel kits installed where a full roof window isn't practical — ideal for bringing natural light into windowless bathrooms and hallways below a roof slope.
Get a quote →Multiple roof window installations for loft conversions across Chippenham and Wiltshire. We work alongside builders and carpenters — supply and fit roofing element only, or full coordination available.
Get a quote →Free survey and quote. We handle everything above the ceiling.
The most common Velux installation request in Chippenham is loft conversions on 1960s and 70s Hardenhuish properties, where the roof pitch and span are well-suited to rear-slope Velux glazing. These installations fall under permitted development in most cases, and we've done enough of them to know which profiles and flashing kits work best on the most common Hardenhuish tile types.
On Pewsham's modern estate housing, flat roof lights on kitchen and living room rear extensions are increasingly popular — particularly when we're already replacing a flat roof membrane, where the additional cost of fitting a quality roof light at the same time is modest. Victorian town centre properties require more care around planning, as conservation area guidance may apply to any new aperture on a visible roof slope.
New single Velux installation (standard pivot model): £400–£700. Replacement in existing opening: £200–£450. Flat roof light (600×600): £500–£900. Sun tunnel installation: £350–£550. All prices include labour and flashing kit. Free written quote before work starts.
"Two Velux windows fitted into our loft conversion. The roofing element was done in a morning, no mess inside, and the flashings are completely watertight six months on. Would use again without question."
"Had the flat roof replaced at the same time as fitting a 900x900 roof light in the kitchen extension. Brilliant combination — the kitchen is transformed. Fitted in one day, cost less than I'd expected for both jobs together."
"Velux window was dripping at the edge every time it rained. Two previous roofers said the window needed replacing. These correctly identified the flashing as the issue, replaced the kit without removing the window, and charged a fair price. Completely dry now."
Standard Velux roof windows on a rear roof slope usually fall under permitted development and don't require planning permission. Front roof slope windows, conservation area properties and listed buildings may need consent. We advise during the free survey before any work is agreed.
Single Velux installation including tile cutting and flashing kit: £400–£700. Larger or roof terrace models run higher. Replacement of an existing Velux window in the same opening: £200–£450. Free written quote before any work starts.
Rear slope installations often don't require consent even in conservation areas, but we always verify during the survey. Listed buildings require listed building consent for any new roof aperture regardless of position. We advise on this before proceeding.
Velux windows are pitched roof installations — they sit flush in the tile plane on a sloping roof. Flat roof lights are upstand-mounted on a flat roof surface. We install both. Flat roof lights are increasingly popular on Chippenham extension roofs where we're already replacing the flat roof membrane.
We fit the external window and waterproof flashing kit, and can advise on internal lining options. Full internal boarding and plastering is normally a separate trade — we can recommend local plasterers if required.
Velux recommends a minimum glazed area of 10% of the floor area for adequate daylight. For a typical Chippenham loft conversion bedroom of 12–15m², two standard-size pivot windows (78×98cm) usually meet this. We advise on sizing based on your specific loft layout and pitch during the free survey.
Rear-slope installations on most properties don't require consent even in conservation areas. Front-slope and any roof window on a listed building requires prior approval. We always check planning status during the survey before any work is agreed — Chippenham has several conservation area streets where this matters.
Supply and fit service across Chippenham and all of Wiltshire.
01249 247 076