A correctly installed Velux window is a permanent fixture that should perform for 30+ years. The critical elements are the flashing kit — the interface between the window frame and the surrounding roof covering — and the correct sizing relative to the rafter spacing. Both are installation decisions that affect long-term watertightness.
Georgian and early Victorian limestone buildings in the town centre and gorge-side streets. Victorian terraces off Briggate. 1960s–80s estates on the town fringe. For Knaresborough's period properties with Welsh slate or clay plain tile roofs, Velux installations require EDW or EDL conservation flashing kits — low-profile systems designed to sit correctly within traditional roof coverings and acceptable in conservation areas.
We supply and install Velux windows across the standard product range and can advise on the right size and specification for your roof. Knaresborough is 3 miles from our Harrogate base — we typically attend within the hour.
Scaffold, Skips & Street Access
Roof window work is usually done from inside plus a roof ladder or tower; scaffold is used where the pitch or height needs safe standing time. Scaffold is specified for: installations on steep or high roofs, or dormer work requiring external standing time - always itemised in your written quote, never a hidden extra, and we arrange it.
Knaresborough’s gorge-side and market-town properties sit on steep, narrow streets where scaffold and skip placement need careful planning. Pavement scaffold and skip permits go through North Yorkshire Council; allow a few working days on streets like the steep streets down to the Waterside, Briggate, Kirkgate where space is tight.
Velux Roof Windows Prices in Knaresborough
| Job | Typical range | Notes |
|---|---|---|
| Standard roof window supply & fit | £1,200-£2,000 | Includes correct flashing |
| Conservation-spec roof window | £1,800-£3,000 | Low-profile flashing for slate |
| Re-flash existing window | £300-£600 | Fixes most leaks |
| Fixed rooflight (flat roof) | £400-£900 | Light without ventilation |
| Two windows | £2,200-£3,600 | Fitted together |
| Dormer window (repair) | Per scope | Assessed on site |
What moves the price
- The window size and type
- The flashing kit required for your covering — slate needs low-profile
- Any conservation or planning constraints
- Access and the roof pitch
Worked example: Two conservation-spec roof windows in a Duchy Estate slate loft conversion, correct low-profile flashing so they sit flush: around £3,600-£4,800.
Staged payment; nothing before materials are on site. VAT included. Product and workmanship both guaranteed.
Covering HG5 and surrounding postcodes.
Your Guarantee, Explained
Installation carries a written 10-year workmanship guarantee; the Velux or rooflight unit carries its own manufacturer warranty on top.
- Covered: workmanship for 10 years, in writing, transferable if you sell.
- On top: manufacturer warranties on materials (terms vary by product).
- Not covered: storm or impact damage - that is an insurance matter, and we will document it for your claim.
If a fault appears in covered work, we come back and put it right. No quibbling, no re-charge.
📞 Call 01423 203744 for a free, no-obligation quote.