Velux roof window installation, replacement and flashing repairs in Pewsham, Chippenham. Correct flashings as standard. Free no-obligation surveys.
In short: Velux and Roof Windows in Pewsham, Chippenham: Velux work runs £150–£350 for a flashing repair, £1,200–£2,000 for a new window. We cover Pewsham (SN15) with free quotes, no call-out fee and a 10-year guarantee. Most leaking skylights need a flashing kit, not a replacement; new windows need the right planning and flashing.
standard permitted development on all Pewsham properties.
Velux installation in Pewsham: standard permitted development on all Pewsham properties. The most common call is a leaking Velux where the window is fine but the flashing kit has failed — significantly cheaper than window replacement. We diagnose correctly before quoting. Pewsham is 2 miles from our base.
Free quotes. No call-out fees. 5 min from Chippenham.
Full installation including tile cutting, counter battening and proprietary flashing kit.
Get a quote →Failed windows replaced in existing opening. Flashing condition assessed.
Get a quote →Most leaking Velux windows have a failed flashing, not a failed window. Kit replacement without window removal where possible.
Get a quote →Multiple roof window installations for loft conversions. Full coordination available.
Get a quote →"UPVC gutter replacement — original joints all failing. New run, correct fall. Good price."
"Chimney ridge repointed — first time in 28 years. Flexible mortar, no cracking since."
"Roof cleaned before putting house on market. Tiles look new. Agent commented positively."
Pewsham is a modern development estate with gentle terrain and no unusual exposure. The defining characteristic is the uniform build phase: virtually every property was built to the same specification in the same window.
Almost entirely 1995–2010 development with concrete interlocking tile and single-storey rear extensions with felt flat roofs throughout. The flat roofs are now 25–35 years old — the most concentrated flat roof maintenance zone in Chippenham.
Felt flat roof failures on rear extensions are the primary call — more GRP flat roof calls come from Pewsham than any other single Chippenham area. UPVC guttering joint failures on original 1990s–2000s stock are the secondary call.
Pewsham's uniform build phase means the maintenance cycle is concentrated: in any given year, hundreds of extensions reach the same threshold simultaneously. GRP replacement at the same cost bracket as re-felting, with a 25-year guarantee, is our standard recommendation for every Pewsham flat roof call.
Single installation: £400–£700. Replacement: £200–£450. Flat roof light: £500–£900. Flashing repair: £150–£350. Free quote — call 01249 247 076.
Standard domestic rear-slope installations: usually permitted development. Front-slope: may need householder consent. We check during the survey.
Usually not. Most leaking Velux windows have a failed flashing kit, not a failed window. Flashing kit replacement costs £150–£350 versus £400–£700 for a new window.
Pewsham is 2 miles from our Chippenham base — 5 min. No travel surcharge.
Yes — we work with loft conversion builders across Pewsham and all of Chippenham. We handle the roofing element and coordinate with the build programme.
Velux recommends a minimum of 10% of floor area as glazed area. Two standard pivot windows (78×98cm) usually meet this for a typical loft bedroom.
Internal condensation indicates insufficient ventilation — not a window fault. Solutions include trickle ventilators or improved mechanical ventilation.
No call-out fees. Written quote. Local roofers covering Pewsham and all of Chippenham.
01249 247 076Pewsham is a 1990s–2010s Chippenham estate district of modern houses with concrete-tile main roofs and felt or GRP flat-roof extensions. On this kind of stock, the problems we see most in Pewsham are failing felt flat-roof extensions at end of life, early uPVC guttering joints leaking, and the first signs of tile movement on the older estate stock. Pewsham sits on the south-eastern edge of Chippenham near the Avon, with some riverside humidity.
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.
Pewsham is modern estate housing with good access, driveways and space for scaffold and skips. Scaffold and skip permits go through Wiltshire Council, and on the estate roads off Pewsham Way we allow extra time for setup. Access is always itemised in your written quote, never a hidden extra.
Workmanship carries our 10-year guarantee; the window and flashing kit carry manufacturer warranties (Velux units typically 10 years) on top.
Last updated: August 2026
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