Roof Lights vs Lanterns: Which Option Suits Your Extension?

Roof lights vs lanterns is a common choice for anyone planning an extension, and Cor-Line helps you decide based on how you want your space to look and perform. Both bring in natural light, but they suit different layouts and design plans.

1. How each system works

Roof lights

• Flat, slim profile

• Sits close to the roofline

• Creates a clean internal and external look

  
  

Framed Fixed Rooflight Example - Double glazed with 82mm black silkscreened border with 7016M frame

Lanterns

• Raised, pitched structure

• Visible inside and out

• Adds shape and character

Example of the S1 Sheerline Roof Lantern - Optional Sheervent options available

2. Light levels

Roof lights

• Spreads light evenly

• Reduces shadowing

• Good for simple, modern interiors

Lanterns

• Draws light into a central point

• Adds height

• Strong visual effect in kitchens and open-plan rooms

  
  

3. Design style

Choose roof lights if you want:

• Straight lines

• A modern extension

• A low-profile finish

Choose lanterns if you want:

• A statement feature

• Extra height

• A more detailed look

4. Thermal performance

Both options perform well when you choose high-spec aluminium systems through Cor-Line.

• Roof lights often perform slightly better because they use fewer frame sections.

• Lanterns still perform well but the raised design can lose a bit more heat.

5. Cost and maintenance

• Roof lights usually suit tighter budgets.

• Lanterns cost more due to the structure and glazing angles.

• Maintenance is similar: keep the glass clean and check seals.

6. Best applications

Roof lights:

• Flat roof extensions

• Modern refurbishments

• Projects with limited roof height

Lanterns:

• Rooms that need a feature

• Traditional or hybrid designs

• Kitchens and dining spaces

Quick comparison table

Feature	Roof Lights	Lanterns
Look	Minimal	Feature
Light spread	Even	Central
Budget	£	££–£££
Thermal performance	Strong	Strong with premium systems
Best for	Modern builds	Character builds

Final thoughts

If your layout suits a clean, low-profile design, roof lights are the straightforward choice. If you want height and a focal point, lanterns work better. Cor-Line supplies both options and helps you match the right system to your build.