Velux windows transform dark loft spaces and improve ventilation across every roof type common to Tonbridge. Whether you need a new install, a replacement unit, a repaired flashing kit, or a condensation-fogged pane replaced, we supply and fit in Tonbridge and across Kent. Free survey, written quote, 10-year workmanship guarantee.
From a single roof window on a Victorian terrace to a full loft conversion glazing package on a Tonbridge new-build, we handle every Velux job. Velux-trained installation team.
We install the full Velux range — GGL double-glazed pivot windows, GGU polyurethane for wet rooms, GHL laminated flat roof windows and GPU top-hung units. Correct specification for your pitch, tile type and opening size is determined at survey — not guessed on the phone.
Replacing an existing unit like-for-like is straightforward in most cases. We carry common sizes in stock. Non-standard sizes, older profiles and discontinued series are sourced direct from Velux — we won't fit a generic substitute.
Most Velux leaks come from failed or incorrectly fitted flashing kits, not from the window unit itself. We diagnose the cause before quoting — a failed EDW or EDL flashing kit on a Tonbridge clay tile roof is a half-day job, not a window replacement.
GHL and GLA flat roof windows for extensions — thermally broken frames, triple glazing option, walk-on variants for accessible flat roofs. Correct kerb height and upstand specification for the Kent rainfall profile.
A fogged or condensation-filled Velux pane means the sealed unit has failed. We replace sealed units in-situ on most models — no need to remove the whole window from the roof.
Older Velux installs on Tonbridge properties often carry EW or EDW flashing kits that are now superseded. Upgrading to the current BDX or EDX system significantly improves weather performance on both clay tile and concrete interlocking roofs.
Tonbridge has three dominant roof types that each require a different Velux flashing specification. Victorian and Edwardian clay plain tile properties on Pembury Road, Vale Road and the castle area carry a double-lap tile at a 45–50 degree pitch — these need the EDL (low pitch) or standard EDW tile flashing kit depending on exact pitch measurement. Getting this wrong means the flashing sits proud of the tile surface and creates a water trap, which is the most common cause of Velux leaks we attend on period Tonbridge properties.
Concrete interlocking tile properties on Cage Green, Trench Wood and Higham Wood — the dominant post-war estate stock in Tonbridge — require profile-specific flashing kits that match the tile's raised interlock. Standard flat flashing kits fitted over interlocking profiles leave gaps at the side laps. We measure and specify the correct kit at survey for every tile type we encounter in Tonbridge.
A secondary consideration specific to lower Tonbridge is the Medway Valley humidity. Loft spaces in riverside and Haysden Country Park-adjacent properties accumulate moisture faster than elevated properties. In these locations we recommend a GGU polyurethane-coated unit rather than pine-finish GGL, as the polyurethane frame handles sustained high humidity without swelling or paint failure.
Typical ranges. Free written quotes on 0173 224 1138.
| Job Type | Typical Cost | Duration |
|---|---|---|
| New Velux GGL install (supply + fit, single unit) | £450–£750 | Half day |
| New Velux GGL install (supply + fit, per additional) | £350–£550 | Add 2 hrs |
| Like-for-like unit replacement (supply + fit) | £400–£650 | Half day |
| Flashing kit replacement only | £200–£380 | 2–3 hrs |
| Sealed unit replacement (fogged pane) | £180–£320 | 1–2 hrs |
| Flat roof GHL skylight (supply + fit) | £800–£1,600 | Full day |
"Two Velux windows installed on our Victorian terrace on Pembury Road. Correct clay tile flashing kits, neatly done, no mess. Explained exactly which specification they were fitting and why. No leaks through two winters since."
"Leaking Velux above the bedroom — two roofers said full replacement. These diagnosed a failed flashing kit, replaced it in a morning for a fraction of the cost. Completely dry since."
"Fogged double-glazing unit replaced in-situ. Quick, tidy job at a fair price. Didn't try to upsell a new window when the unit was all that needed doing. Appreciated the honesty."
A single new window installation typically takes half a day. Two windows in the same roof slope: most of a day. We always leave the roof fully weathertight before finishing.
Yes — clay plain tile, concrete interlocking, natural slate and flat roofing systems. Each requires a different flashing kit specification which we determine at the free survey.
Usually yes. Most leaks are flashing kit failures, not window unit failures. We diagnose the cause correctly before quoting — a flashing repair is significantly cheaper than a full replacement.
We supply the Velux unit and all associated hardware. You don't need to source anything separately. Supply and fit is included in every quote.
10-year workmanship guarantee on the installation. Velux provides a 10-year product guarantee on the window unit and 5 years on flashing kits. All guarantees are provided in writing.
GGL (standard pivot), GGU (polyurethane — recommended for humid Tonbridge kitchens and bathrooms), GHL (flat roof), GPU (electric), GVT (conservation area flat frame). Full range supplied and fitted across Tonbridge and Kent.
Yes — we advise on model selection for conservation-sensitive properties in Tonbridge. The GGL Conservation (CK and FK ranges) has a low-profile flush frame appropriate for most conservation areas.
Medway Valley frost pocket position — more freeze-thaw cycles than elevated surrounding towns. For velux windows work in Tonbridge, this means the dominant failure pattern and the correct specification both reflect local conditions rather than generic UK roofing standards.
The housing stock across Tonbridge — Victorian and Edwardian clay plain tile, 1960s-80s concrete interlocking, post-war semis throughout — creates a specific set of requirements that we address differently here than elsewhere in our coverage area. Properties on Pembury Road and Vale Road demonstrate this most clearly: the roofing issues we see there reflect the intersection of era, construction method and local exposure in ways that a non-local contractor would not anticipate from the specification alone.
Haysden Country Park and Medway riverside generate above-average moss and leaf fall debris. We factor this into every survey and quote on Tonbridge properties — it is the difference between a repair that lasts five years and one that lasts thirty.
Tonbridge is our base from our Tonbridge base. Survey appointments within 2–3 working days. Emergency cover 24/7. Free written quote on 0173 224 1138.
Free inspection, written quote, no obligation.
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