VELUX roof windows
Centre-pivot windows and the two most-used flashing kits are on the shelf at Shepley, and the rest of the range comes in to order — along with blinds, accessories and installation if you want it.
Why a roof window
Glazing set into the slope of a roof takes its light from the open sky rather than from across the street, so a loft conversion, a landing or a back extension gets daylight that a wall window simply can't reach.
The trick is picking the right one. Type, size, finish and flashing all depend on your roof covering and its pitch, and getting any of them wrong is an expensive mistake. Bring us the details and we'll work through it with you.
We keep the centre-pivot windows and the EDW and EDL flashings in stock, because those cover most roofs around here. Anything else — top-hung, flat roof, sun tunnels, the less common flashings, blinds — we order in for you. Ask at the counter and we'll tell you what the lead time looks like.
The range
GGL & GGUIn stock
The classic roof window. The sash pivots about its centre, so it clears furniture placed beneath it and rotates right round for cleaning from inside. Operated by the bar along the top, which means it still works when the window is out of easy reach.
GPL & GPUTo order
Hinged at the top and pushed open from the bottom, giving an unobstructed view out and a balcony-like feel. Best where the window sits low enough in the roof to lean out of. Still rotates for cleaning.
RooflightsTo order
For extensions and flat-roofed rooms. Curved glazing suits a true 0° roof and sheds water and dirt naturally; flat glass suits pitches from 2° to 15°. Available fixed or opening, including electric and solar versions.
Rigid & flexibleTo order
For a hallway, landing, bathroom or walk-in wardrobe where a full window isn't possible. A reflective tube carries daylight from the roof down to a ceiling diffuser, passing on up to 98% of it. Rigid where the run is straight, flexible where it has to dodge pipes or beams.
Finish & operation
A clear-lacquered natural pine finish inside. The warmer option, and the usual choice for bedrooms and living space. Centre-pivot GGL, top-hung GPL.
A durable, moisture-resistant white finish with no visible joints. The sensible choice for bathrooms, kitchens and utility rooms. Centre-pivot GGU, top-hung GPU.
Out of reach, or simply easier by remote. Electric runs off the mains and opens from a wall switch; solar needs no wiring at all. Both carry a rain sensor that shuts the window for you when the weather turns.
Reading the code
A VELUX size code is two letters and a number — the letters set the width of the outer frame, the number sets the height. An MK04 is 780 mm by 978 mm. If you're replacing an old window, the code is on the plate behind the sash.
| Code | Outer frame |
|---|---|
| CK | 550 mm wide |
| FK | 660 mm wide |
| MK | 780 mm wide |
| PK | 942 mm wide |
| SK | 1140 mm wide |
| UK | 1340 mm wide |
| Code | Outer frame |
|---|---|
| 01 | 698 mm tall |
| 02 | 778 mm tall |
| 04 | 978 mm tall |
| 06 | 1178 mm tall |
| 08 | 1398 mm tall |
| 10 | 1600 mm tall |
| 12 | 1800 mm tall |
Flashings
A roof window is only as watertight as the flashing kit around it, and the right kit depends on what your roof is covered with and how deep you want the window to sit. Tell us the covering and the pitch and we'll match it.
| Kit | Roof covering | Pitch | Installation | Availability |
|---|---|---|---|---|
| EDW | Tile, profile up to 120 mm | 15–90° | Standard | In stock |
| EDL | Slate up to 8 mm thick | 15–90° | Standard | In stock |
| EDP | Plain tile, up to 14 mm thick | 25–90° | Standard | To order |
| EAW | Tile up to 120 mm, low pitch | 10–75° | Standard | To order |
| EDJ | Tile up to 90 mm | 20–90° | Recessed, 40 mm deeper | To order |
| EDN | Slate up to 8 mm thick | 20–90° | Recessed, 40 mm deeper | To order |
| ZWC | Lead, standing seam & other substrates | 15–90° | Special head flashing | To order |
Combination kits for twin, triple and side-by-side installations are available to order. Not sure what you're looking at? Send a photo of the roof to sales@cbpbuild.co.uk and we'll tell you.
Supply and fit
Fitting a roof window means opening up a roof, trimming rafters and making the whole thing watertight again. It isn't a job to take on lightly, and it isn't one VELUX carry out themselves.
If you'd rather not arrange it yourself, we can. Tell us what you're after and we'll quote for the window, the flashing and the fitting together — one price, and one number to ring if anything needs sorting.
Call the trade counter for stock and pricing, or send your list over by email and we'll come back to you.
