⭐ 4.9/5 · 143 Reviews — Velux and skylight installation across Leicester, including loft-conversion roof windows, dormer windows and correct re-flashing, fitted to the right specification for your tile type.
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📞 Call Now: 0116 319 1348A roof window — Velux is the best-known brand — brings natural light and ventilation into a loft or top-floor room. The key to a lasting, leak-free installation is the flashing kit: the metal surround that weatherproofs the junction between the window and the surrounding roof covering. The flashing must match the tile type, and getting this detail right is what separates a proper installation from one that leaks within a year.
A standard Velux installation in Leicester costs £1,200–£3,000 supplied and fitted per unit. The range reflects window size, whether it is a new opening or a replacement, the roof pitch, and the tile type — profiled concrete interlocking tile needs a different flashing kit from plain clay tile or slate. We specify the correct kit for your roof rather than a generic one.
On loft conversions, roof windows are usually the preferred choice over dormers because they fall within permitted development and need no planning permission in most cases. A pair or row of Velux windows lights a converted loft effectively and installs faster and cheaper than a dormer. We fit new roof windows as part of loft conversion roofing or retrofit them into an existing roof.
Dormer windows — where the window projects out from the roof slope in its own small structure — give more headroom and floor space than a roof window but are a bigger job involving structural framing, and often planning permission. We repair and re-weatherproof existing dormers, where the cheeks, roof and flashing are common failure points, and advise on dormer versus roof window where you are planning a conversion.
Replacement of an old, failing roof window is a common job across Leicester's converted lofts. Roof windows fitted 20–30 years ago reach the end of their seal and flashing life and begin to leak or mist up. A like-for-like replacement into the existing opening, with a new correctly matched flashing kit, is straightforward and restores a watertight, efficient window.
Loft conversions are common across Leicester's larger 1930s semis in Oadby, West Knighton and Evington, where the generous roof space suits conversion and roof windows are the standard way to light the new room. These properties typically take a pair or row of Velux windows on the rear slope, fitted with the correct kit for their clay or concrete tile.
Victorian terraces in Highfields, Belgrave and Clarendon Park present a different picture — steeper pitches, often slate or clay plain tile, and in conservation areas a constraint on what is visible from the street. Here we usually fit conservation-style roof windows to the rear slope, correctly flashed for slate or plain tile, keeping the street elevation unchanged in line with Leicester City Council conservation-area expectations.
The post-war and 1960s–80s estates of Braunstone, Thurmaston and Birstall have a large stock of converted lofts fitted with roof windows during 1990s–2000s conversion booms. Many of these first-generation windows are now reaching the end of their seal and flashing life, creating a steady replacement market — like-for-like swaps into existing openings with fresh flashing kits.
Whatever the property, the local point that matters is the flashing match. Leicester's mix of concrete interlocking, clay plain tile and slate means there is no single correct flashing kit — we identify the tile type and specify the matching Velux flashing (profiled, plain or slate) so the installation is watertight for the life of the window.
The transformative effect of a roof window is out of all proportion to its cost. A dark loft room or a north-facing landing becomes bright and usable, and a pair of well-placed windows can change how an entire top floor feels. Because roof windows admit far more light than a vertical window of the same size — the sky is directly above — they are the most efficient way to bring daylight into Leicester's converted lofts and top-floor rooms.
Specification choices affect the long-term experience. Centre-pivot windows are the standard and most economical; top-hung options give a clearer view and more headroom at the opening; and the glazing and blind options affect comfort in summer, when an unshaded south-facing roof window can make a loft room warm. We advise on the right configuration for the room's aspect and use rather than simply fitting the cheapest unit.
For loft conversions, planning the window positions properly is worth the effort. Building Regulations require a minimum glazed area for means of escape in a habitable loft room, and thoughtful placement balances that requirement with light, ventilation and the furniture layout of the finished room. We work with the conversion design so the windows serve the room rather than being an afterthought punched through the roof.
| Work | Typical Leicester Price |
|---|---|
| Velux roof window (supplied + fitted) | £1,200–£3,000 |
| Replacement into existing opening | £900–£1,800 |
| Additional window (same visit) | from £900 |
| Dormer window repair | per scope |
| Correct flashing kit for tile type | included |
Prices supplied and fitted with the correct flashing kit for your tile type. Replacement into an existing opening is cheaper than a new opening. Free survey. Call 0116 319 1348.
Loft conversions and roof window installations must meet Part L thermal and Part B fire-escape requirements of the Building Regulations, including minimum glazed area for means of escape in habitable loft rooms. Source: Building Regulations Approved Documents L and B
“Two Velux windows into our Oadby loft conversion. Correct flashing for our concrete tiles, no leaks, and they were tidy about the plaster reveals inside. Room is transformed with the light.”
“Replaced a 25-year-old leaking roof window on our Evington semi. Straight swap into the existing hole with a new flashing kit. Watertight and much clearer glass. Reasonable price.”
“Conservation-style roof window on the back of our Clarendon Park terrace — kept the front elevation untouched as the conservation area needs. Flashed properly for the slate. Knew what they were doing.”
A Velux roof window costs £1,200–£3,000 supplied and fitted per unit in Leicester, depending on window size, roof pitch and tile type. Replacing an old window into an existing opening is cheaper at £900–£1,800 because no new opening is formed. Additional windows fitted in the same visit start from £900.
In most cases no — roof windows that do not project beyond the roof plane usually fall within permitted development. Conservation areas such as parts of Stoneygate and New Walk may restrict windows on street-facing slopes, and we typically fit to the rear slope there. We advise on the planning position as part of the survey.
The flashing is the metal surround that weatherproofs the junction between the window and the roof covering. It must match the tile type — profiled concrete, plain clay or slate each need a different kit. A mismatched or generic flashing is the usual cause of roof windows leaking within a year. We specify the correct kit for your roof.
Yes. Roof windows fitted 20–30 years ago reach the end of their seal and flashing life and begin to leak or mist up. A like-for-like replacement into the existing opening with a new correctly matched flashing kit is straightforward, costs £900–£1,800, and restores a watertight, efficient window.
Roof windows are cheaper, faster, and usually within permitted development, making them the standard choice for lighting a converted loft. Dormers give more headroom and floor space but involve structural framing and often planning permission. We advise on which suits your conversion and budget at survey.
Yes. Dormer cheeks, the small dormer roof, and the flashing where the dormer meets the main slope are common failure points, especially on older conversions. We repair and re-weatherproof existing dormers, pricing the work per scope after a survey of the specific problems.
A single roof window into an existing roof typically takes one day; a replacement into an existing opening often half a day. A pair or row as part of a loft conversion is scheduled with the wider conversion work. We weatherproof the opening at the end of each working day so the roof is never left exposed.
Correct flashing for your tile type. Roof windows, replacements and dormers. Written quote within 48 hours.
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