VELUX Window Installers › Cardiff
A roof window brings daylight into a loft room, a landing or a stairwell that has none, and Cardiff has plenty of houses with roof space going to waste. Fitting one means cutting into the roof, so the framing and the weatherproofing both have to be right before the window is worth having.
We fit VELUX and similar roof windows in slate and tile roofs across the city. Most of our work is on Victorian and Edwardian terraces and 1930s semis, where a loft conversion or a new landing window is the usual reason for calling us, and we are happy to look at either.
Call 07766 547309 about velux window installers in Cardiff, or message us on WhatsApp.
Roof windows on Cardiff houses
The tall Victorian and Edwardian terraces of Cathays, Roath and Pontcanna often have deep roof spaces with good head height, which is why so many get converted. The rear slope usually takes the windows, with the front left as it is for the look of the street and so the front slope stays undisturbed.
On 1930s semis in Heath, Cyncoed and Whitchurch the roofs are lower and often hipped, so we measure carefully to see how much floor space a window will actually serve once the sloping ceiling is allowed for. Concrete tiles and slate need different flashing kits, and we match the kit to the covering, and we do not mix and match to save time.
Cardiff gets wet westerly weather, so the flashing and the sealing around a window carry a lot of load. Most leaks around roof windows come from the flashing, the seal or the roof covering around the frame, not from the glass, and we build the opening with that in mind, from the first rafter to the last seal.
Roof window work we carry out in Cardiff
- New roof window in an existing roof — We open up the slope, trim and double up the rafters where the opening needs it, and fit the frame and flashing kit to the covering.
- Roof windows for loft conversions — We fit a set of windows to suit the room layout, with openings positioned for light, head height and a clear way out.
- Replacing an old roof window — We take out a tired or leaking window and fit a new one with a matching flashing kit, lining and seal around the frame.
- Flashing and leak repairs — Where a window leaks, we look at the flashing, sealing and surrounding tiles first, because the glass is rarely the cause.
- Misted or failed sealed units — Misting between the panes means the sealed unit has failed, and we advise whether the unit or the whole window should be changed.
- Lining, insulation and finishing — We line the opening, insulate around the frame and add a vapour control layer so the room stays dry and tidy inside.
How we approach roof windows in Cardiff
Before anything is cut we check the rafter layout from the loft, the roof covering and the position of any chimney or valley close to the opening. Terraces often have shared stacks and tight rear access, so we plan how materials get up and how the slope is protected while it is open.
We explain what the opening involves, including the framing and the lining inside, and we are open about what a window cannot fix. Some roof window work may need planning or Building Regulations checks — we advise before work starts. We leave the roof sealed up each day.
VELUX Window Installers Guides for Cardiff
VELUX Window Installers in Cardiff — Common Questions
Can a roof window be fitted into any Cardiff roof?
Most pitched roofs can take one, but it depends on the rafter spacing, the pitch and what sits close by, such as a chimney or a valley. We check from the loft and the slope before we say yes.
Do you fit VELUX windows specifically?
We fit VELUX and similar roof windows. The brand matters less than matching the window to the right flashing kit for your roof covering, whether that is slate or concrete tile, so we choose the kit to suit the roof.
Why do some roof windows leak?
Leaks usually come from the flashing, the sealing or the roof covering around the frame rather than the glass. A kit that does not suit the tiles, or a poorly sealed corner, will let water in during Cardiff's wet spells.
What does it mean if my roof window has misted up?
Misting between the panes usually means the sealed unit has failed. Condensation on the inner face is a different matter and is more about ventilation. We look at which it is and tell you what to do.
Will the opening mean cutting the rafters?
Sometimes. A window can need a rafter trimmed and the opening framed with doubled-up timbers, which we confirm on site. We do this carefully so the roof stays sound around the new window.
More Roofing Help in Cardiff
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Contact T&T Roofing in Cardiff
We cover Cardiff and the area around it including Roath, Cathays, Canton, Llandaff, Whitchurch.
Tell us what the roof is doing in Cardiff and we will look at it. Call 07766 547309, message us on WhatsApp or use the form below.