VELUX Window Installers › Maesteg › Guide
Choosing a roof window starts with the room, not the catalogue. Many loft spaces in Maesteg terraces are long and narrow, with steep slopes and low eaves, so the position of the window decides how bright and usable the room feels. Size comes second, once the structure and the roof covering are clear.
Start with the rafters
The opening is cut between the rafters, and the window frame is sized to suit. If a rafter has to be trimmed, it is doubled up around the opening so the load is carried properly. We check the spacing and condition of the timbers in the loft before settling on a position, and confirm it on site. Narrow terrace lofts often leave little choice, which makes the early check worthwhile.
Light and headroom
A window set too low gives a view of the street but little daylight, while one set too high leaves you looking at the sky. For a bedroom or study, we usually think about where the bed or desk will sit, and the height at which a person standing or sitting can see out comfortably. It also helps to stand in the loft at different times of day and see where the light falls.
- Sill height suited to how the room is used
- Enough headroom to stand beside the window
- Light falling where the desk or bed sits
- Ventilation if the room has no other window
The roof covering matters
Each window has to be matched to a flashing kit for the roof covering. A slate roof, a flat concrete tile and a profiled tile each need different kits. We check the covering around the chosen spot, and if it is worn we may suggest repair first so the window is not set into a failing roof. Where the covering is old, the window may be best fitted with a section of new roofing around it.
Aspect and exposure
On the valley side of Maesteg, a south-facing slope gives warmth and light, while a north slope gives steady daylight with less heat. Exposed positions towards Llangynwyd or Pen-y-fai take more wind and rain, which makes the flashing detail even more important. We help you weigh these points when choosing. Lower windows catch more of the wind-driven rain, so the sealing deserves extra care there.
Insulation, lining and approvals
Around the opening we plan lining, insulation and vapour control so the room stays warm and dry. Some installations may need planning or Building Regulations checks, and we advise before work starts. We will also tell you plainly if the size you have in mind is too big for the roof. We give you an honest view before any opening is cut.
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Common Questions
What size roof window suits a loft room?
It depends on the rafter spacing, the pitch and what the room is for. A larger window brings more light but needs more structural work. We look at the loft and suggest a size that fits the timbers and the room.
Can I put a roof window anywhere on the roof?
Not quite anywhere. The rafters, the roof covering, chimney stacks and valleys all limit the position. We check these on site and tell you where a window will work well and where it would cause problems.
Should I fit more than one roof window?
In a long Maesteg terrace loft, two smaller windows can light a room more evenly than one large one, and they give cross ventilation. It depends on the layout, so we talk through the options after looking at the space.
Get a Quote in Maesteg
Tell us what the roof is doing in Maesteg and we will look at it. Call 07766 547309, message us on WhatsApp or use the form below.