The two opening styles suit different rooms and slopes. Here is how a centre-pivot and a top-hung window compare on a Victorian or Edwardian villa near the Downs.
On a villa roof near the Downs, a roof window faces wind, rain and sometimes branches. Choosing between a centre-pivot and a top-hung window is partly about how you want to use the room, and partly about how the window behaves on an exposed slope with mature trees close by.
Centre-pivot windows
A centre-pivot window rotates around a central axis, so the lower part swings out and the upper part swings in. The handle sits at the top, so you reach up to open it. It is common in loft rooms with a view, and the outer pane can be cleaned from inside.
Because the sash turns, it can be a good fit where a clear opening at head height is wanted, such as an attic bedroom, a study under the slope or a landing where you want a view towards the open ground. It is worth thinking about early.
Top-hung windows
A top-hung window is hinged at the top and opens outwards, with the handle at the bottom. It is the natural choice higher in the slope or where furniture sits below. Opened fully it gives a wide gap for air, and it can be left slightly open for background ventilation even in light rain.
Wind and exposure
On an exposed site, a window is under pressure whichever style you choose, and what matters is correct fitting, sound seals and the right flashing kit. A window that opens outwards, like a top-hung one, should be closed or latched in strong wind, and we explain how to set it for gusty days.
- Latching and ventilation settings for windy days
- Seals checked and tested at fitting
- Flashing kit matched to the roof covering
- Fixings to the rafters done properly
Trees and cleaning
Falling leaves, seeds and twigs gather on the glass and in the flashing channels of a window under trees. Pivot windows are easy to clean from the room side, and that matters more beneath heavy tree cover. Top-hung models are cleaned from inside with a little more reaching.
Please do not lean out or go onto the roof to clean the outside. If glass under trees gets very dirty, we can advise on safe ways of keeping it clear, or look at it for you on a visit. That keeps the glass clear.
Choosing for your room
Think about where the sill falls, whether you want a view or just air, how the room is used and how high the opening sits. For work on an older roof, the rafters may need trimming and doubling up, and the lining and insulation around the opening need care. We fit VELUX and similar roof windows and talk through the choice with you.
Frequently Asked Questions
Which style is better for bedrooms?
A centre-pivot is usually favoured, since you can see out from bed or standing, and it opens comfortably at head height. A top-hung suits a bedroom with a higher sill or furniture below the glass.
Does opening style affect how well the window keeps rain out?
Not directly. Rain-tightness depends on the seals, the lining and the flashing kit being right for the roof covering. We make sure these details are correct whichever style you choose, because they matter more than the opening method.
Can I choose a darker frame colour?
Roof windows come with a range of frame finishes, and the flashing is available in matching colours for many coverings. We check what is available for your window and roof before you decide, and explain what each looks like.
Talk to our team about VELUX and roof window installation in The Downs
Every roof is different — the fastest way to get an accurate answer is a quick chat with our team.