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🔲 Velux Roof Windows — Box

Velux Roof Windows Box

Velux roof window installation, replacement and flashing repairs across Box. Supply and fit service — correct flashings as standard. Free no-obligation quotes.

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20+
Years Local
143
5★ Reviews
Free
Quotes
Free
Survey

In short: Velux and Roof Windows in Box: Velux work runs £150–£350 for a flashing repair, £1,200–£2,000 for a new window. We cover Box and the surrounding SN13 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.

✓ NFRC Registered
✓ Fully Insured
✓ 10 Year Guarantee
✓ Free Quotes
✓ No Hidden Costs
All Services
Velux Roof Windows in Box

Velux Roof Windows in Box

All velux roof windows work across Box and surrounding Wiltshire.

🔲

New Velux Installation

Full installation including tile cutting, counter battening and proprietary flashing kit.

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🔄

Velux Replacement

Failed or draughty windows replaced in existing opening. Flashing condition assessed.

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💧

Flashing Repair

Most Velux leaks are a flashing failure, not a window failure. Kit replacement without window removal where possible.

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▢

Flat Roof Lights

Upstand-mounted flat roof lights for extensions. Often combined with flat roof replacement.

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🧷

Sun Tunnels

Sun tunnels for bathrooms and hallways where a full roof window isn't practical.

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📌

Loft Conversion Glazing

Multiple roof window installations for loft conversions. Full coordination available.

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Why Box Specifically

Velux Roof Windows in Box — What Makes This Location Different

Local Climate and Exposure

The By Brook valley creates high humidity and heavy tree canopy — moss growth rates are among the fastest in our Wiltshire coverage, and lead corrosion is accelerated by valley moisture. For velux roof windows work in Box, this means specification choices that reflect the actual conditions rather than generic Wiltshire averages.

Housing Stock Profile

Bath stone AONB village with period cottages requiring lime mortar and matching stone materials throughout. We are 8 miles southwest from Box — 15 minutes — with no travel surcharge and same local knowledge that applies to every property type in this area.

Need Velux Roof Windows in Box?

Free quotes. No call-out fees. 15 minutes from Chippenham.

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Do you need this?

Signs You Need Velux & Roof Windows in Box

Most leaking skylights need a flashing kit, not a replacement; new windows need the right planning and flashing in Box. Box is a Bath-stone village strung along the valley between Bath and Corsham — stone cottages, stone-slate and clay roofs, and steep valley-side plots. On this kind of stock, the common problems are heavy moss on shaded valley roofs, stone-slate slippage, and blocked valleys from the dense canopy — and knowing which you are dealing with is the difference between a lasting fix and money wasted.

Velux and Roof Windows technical diagram for Box
National roofing standards illustrated. We advise on your specific Box roof after a free survey.

Velux Roof Windows in Box

Velux roof window installation and replacement in Box covers new loft conversion glazing, replacement of failed windows, and flashing repairs. Loft conversions on Box's Bath stone AONB 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.

Chippenham Roofing Experts
📍 Serving Box, Wiltshire
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📌 8 miles southwest (15 minutes from Chippenham)
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📍 All Services in Box
The process

How Velux & Roof Windows Works in Box

1. Assess the opening

For a new window we check rafter spacing, the room below and planning status; for a leak we diagnose the flashing.

2. Confirm planning

Rear-slope installations are usually permitted development; front-slope, listed and conservation-area need checking first.

3. Written quote

A fixed price for install or flashing repair, agreed before work.

4. Install & flash

The window is fitted and sealed with the correct flashing kit for your specific tile or slate profile.

5. Test & finish

We test for watertightness, make good internally where agreed, and guarantee the work.

Timescales

How Long Velux & Roof Windows Takes

JobTypical duration
Flashing kit repair2–4 hours
Replacement in existing openinghalf to full day
New roof window (rear slope)1 day
Multiple windows1–2 days
Dormer roofing / repairper scope

Cutting a new opening needs dry conditions so the roof is never left open to rain; we weather-schedule new installations.

Access

Access, Scaffold & Permits in Box

Box's stone cottages sit on steep valley plots with tight lane access, often requiring stone-slate matching and careful scaffold on the slopes. Pavement scaffold and skip permits in Box go through Wiltshire Council; on tight streets like the A4 through the village, Market Place, High Street we allow extra time for setup and access.

Pricing

Velux & Roof Windows Prices in Box

Velux work runs £150–£350 for a flashing repair, £1,200–£2,000 for a new window. Box pricing tracks Chippenham, adjusted for access on Box's stock.

JobTypical rangeNotes
Flashing kit repair / renewal£150–£350Fixes most leaks
Replacement in existing opening£400–£700Like-for-like
New roof window (standard)£1,200–£2,000Rear slope, fitted
Larger / multiple windows£2,000–£3,000Per project
Dormer roofing / repairper scopeLeadwork & weatherproofing
Conservation / listedsurvey firstConsent 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 SN13 and surrounding postcodes.

Guarantee

Your Box Guarantee

Workmanship carries our 10-year guarantee; the window and flashing kit carry manufacturer warranties (Velux units typically 10 years) on top.

Pricing Guide

Costs in Box

Single Velux

£400–£700
Supply and fit, standard pivot.

Velux Replacement

£200–£450
In existing opening.

Flat Roof Light

£500–£900
600×600 upstand-mounted.

Flashing Repair

£150–£350
Kit replacement only.
Good to know

What to Expect While We Work

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. Box sits deep in the By Brook valley, so properties are shaded, damp-prone and slow to dry, with heavy tree cover.

Customer Reviews

Velux Roof Windows Reviews — Box

★★★★★

"Two Velux windows fitted into loft conversion. Roofing done in a morning, completely watertight six months on."

V. Cromwell · Box
★★★★★

"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."

W. Hartwell · Box
★★★★★

"Flat roof light on kitchen extension fitted at the same time as flat roof replacement. Kitchen transformed. Good combined value."

X. Langley · near Box
FAQ

Common Questions

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.

Box is 8 miles southwest from Chippenham — 15 minutes. No travel surcharge.

Yes — we work alongside builders across Box 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.

Get In Touch

Free Quote — Velux Roof Windows Box

No call-out fees. No obligation. Local roofer covering all of Wiltshire.

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Last updated: August 2026