Skylight and rooflight guides
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How a rooflight is finished inside: linings, splays, plasterHow a rooflight lining is formed, splayed, plastered and edged so it meets your ceiling cleanly.Read the guide
Roof lantern sizing: how big for your roomHow to size a roof lantern from the room, the structure and the finished opening in your ceiling.Read the guide
Flat rooflight or roof lantern: which suits your extensionHow to choose between a flat rooflight and a roof lantern for your extension.Read the guide
Roof window or dormer for a loft roomRoof window or dormer: headroom, planning and the finish inside, compared for a loft room.Read the guide
VELUX window sizes and codes explainedHow to read a VELUX size code and choose a frame size that suits your rafters, roof and room.Read the guide
Electric or manual opening rooflightsHow to choose between electric and manual opening rooflights, room by room.Read the guideEvery guide by topic
Skylights and rooflights 4
Roof lanterns 4
Flat roof rooflights 4
Roof windows 4
VELUX windows 4
Electric and opening rooflights 4
Energy efficient rooflights 4
Misted and failed rooflight replacement 4
Walk-on rooflights 4
Our rooflight guides cover the choices behind a rooflight job in more depth than a short answer allows: how a lining is formed, how to tell a skylight from a rooflight, what planning and Building Regulations expect, and what replacing an old unit involves.
The ones here apply to any rooflight. Each service page carries its own guides beneath it for questions that belong to one type, such as lantern upstands or walk-on glass specification, so look there if you already know what you want to fit.
The guides are written to be read through, with plain headings you can jump between. If one raises a question about your own house, send us the details, and see the answers for shorter replies.