Which suits a kitchen extension on a newer estate, a lantern or a flat rooflight?
The Kingsmead estate was built on farmland between 1996 and 2006, so its houses are modern. Where one has a single-storey, flat-roofed extension at the back, that roof is where daylight can come in without taking anything from the garden.
Two different shapes
A flat rooflight is a low glass unit on a raised upstand. It looks tidy from the garden, and because it is flat to the roof, a wipe over from a short ladder or a long-handled tool is often enough. A lantern is a glazed box that rises above the roof and brings light in from several sides, adding height as well as brightness. It suits a family kitchen with a dining table, where the extra volume is something you notice.
Opening and shading
Either shape can be fixed or opening. A fixed unit asks nothing of you. An opening one is worth having where the room fills with cooking heat, and an electric version opens from a switch on the wall, so nobody climbs on a chair. A blind matters more than people expect: a lantern facing a sunny garden can be bright at lunchtime, and a pleated blind or solar control glass keeps the table comfortable.
Planning
A lantern put on an existing flat roof normally falls outside permitted development, so it calls for a planning application unless the council tells you otherwise, and the planning guide explains why. On a new extension, the lantern is assessed with the extension; we confirm the position with the council before work starts. Our note on choosing a rooflight for a flat roof goes further into the options.
Kitchen extension, side by side
- Flat rooflight
- Low profile, simple to wipe, good for narrow rooms
- Lantern
- Taller glazing, more volume, suits a wide table
- Opening
- Fixed, or electric from a wall switch
- Shade
- Pleated blind or solar control glass




