Rooflight advice
Roof Lantern or Flat Skylight: Which Suits Your Extension?
A roof lantern and a flat skylight both bring overhead daylight into an extension. The choice changes the roofline, the view from the room and the work needed around the opening. Compare both formats against the same room plan before choosing a size.
Think about the ceiling view
A lantern creates a raised, pitched glazed feature. A flat skylight gives a lower external profile and a different view through the ceiling. Mark the sofa, dining table and kitchen island on your plan, then consider the view from each position. Include the finished internal reveal: the rooflight is only one part of what you see from below.
Position comes before size
Place the opening where daylight will support the room’s use. Check pendant lights, extract routes, beams and tall kitchen units before settling on a position. One large opening and several smaller openings can require different structural and waterproofing details. Ask the building designer to assess those options rather than deciding solely by the available glass area.
Compare the whole project
Compare the product together with its required support, kerb, roof covering, lifting and internal finishing. For a replacement, have the existing roof surveyed before assuming its opening can be reused. Review the glass specification and a safe maintenance route too. Neither a lantern nor a flat skylight should be treated as a walk-on surface.
Explore the range
Ultrasky and Korniche lanterns can be configured through their dedicated designers. Stratus and Korniche flat skylights have separate designers and different measuring instructions. Choose the range first, have your installer confirm the ordering dimensions, then review the finish, glass, quantity and payable total. A measurement used for one system must not be copied into another without checking.
Need help with your project?
Send us your product choice, dimensions and installer’s drawing so we can help you identify the right specification and documents.
Contact Roof Lantern Kits