Velux roof window installation, replacement and flashing repairs in Hartham, Chippenham. Correct flashings as standard. Free no-obligation surveys.
In short: Velux and Roof Windows in Hartham, Chippenham: Velux work runs £150–£350 for a flashing repair, £1,200–£2,000 for a new window. We cover Hartham (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 non-listed Hartham properties. Victorian riverside properties — check listing status.
Velux installation in Hartham: standard permitted development on non-listed Hartham properties. Victorian riverside properties — check listing status. 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. Hartham is 1 mile from our base.
Free quotes. No call-out fees. under 10 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 →"Cast iron gutter repaired — correct compound, no plastic replacement on Victorian house."
"Chimney repoint in lime. River moisture had accelerated deterioration significantly."
"Lead reflash in code 5 — river exposure justified the upgrade. Correctly specified."
Hartham sits alongside the River Avon between Chippenham town centre and the rural south. The riverside location creates the highest moisture exposure in the Chippenham area — lead corrosion is measurably faster here, and moss growth on north-facing slopes is the most aggressive in our coverage.
Victorian and Edwardian properties near the river with post-war housing further inland. The riverside Victorian stock has some of the most demanding maintenance profiles in Chippenham due to the combination of age and moisture exposure.
Lead valley and flashing failures accelerated by river moisture are the primary call — we specify code 5 lead on exposed riverside elements as standard. Aggressive moss on north-facing slopes is the secondary maintenance category.
The River Avon creates conditions at Hartham that require specification adjustments compared to inland Chippenham properties. Code 5 lead, 2-year moss cleaning cycles, and annual gutter clearing are standard recommendations here.
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.
Hartham is 1 mile from our Chippenham base — under 10 min. No travel surcharge.
Yes — we work with loft conversion builders across Hartham 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 Hartham and all of Chippenham.
01249 247 076Hartham is a riverside area north of Chippenham with a mix of older stone and brick property and Hartham Park's period estate, close to the Avon watermeadows. On this kind of stock, the problems we see most in Hartham are heavy moss on the shaded riverside roofs, blocked valleys from the mature tree cover, and leadwork on the older period stock. Hartham sits right on the Avon, so humidity is high, moss growth fast and drying slow, especially on the riverside slopes.
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.
Hartham's riverside and estate properties vary from tight period plots to open grounds; period and stone stock often needs matching materials. Scaffold and skip permits go through Wiltshire Council, and on the lanes toward Hartham Park 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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