Roof Lantern Prices & Kit Costs

Roof lantern prices depend on the exact size, frame material, finish and glass package. The examples below show current supply-only prices including VAT, calculated by the same pricing functions used in our online designers. Start with the product and ordering dimensions, then compare what each quotation includes.

Rooflight price examples including VAT

These examples use the same pricing calculation as our designers. They are specific configurations, not starting prices for every size. Delivery charges, where applicable, are confirmed at checkout. Installation, timber kerbs and roof preparation are excluded.

Supply-only examples — prices include 20% VAT

Product and ordering size	Included specification	Price including VAT
Korniche Roof Lantern 1500 × 2500 mm External upstand	Aluminium inside and outside; anthracite grey both sides; Clear 1.2 double glazing.	£1,532.79
Ultrasky Roof Lantern 1500 × 2500 mm External kerb	Aluminium inside and outside; grey both sides; Clear / Low E 1.2 double glazing.	£1,916.23
Stratus Flat Skylight 1000 × 1500 mm Internal kerb	Grey frame; Clear / Neutral 4S double glazing; standard application; 4° fall; 80 mm kerb top and 150 mm height.	£1,322.82
Korniche Flat Skylight 1000 × 1500 mm External upstand	Grey frame; Clear double glazing; standard application; 4° pitch; 80 mm upstand top and 150 mm height.	£698.86
Ultrasky frame only 1500 × 2500 mm external kerb	Grey aluminium inside and outside. Unglazed: no glass included. Compare with the glazed Ultrasky example above.	£1,496.63

The same numerical size does not mean the same roof opening across ranges. Confirm the measurement reference with your installer. Enter the dimensions and options above in the relevant designer to review and order that specification. Delivery and returns · Measuring guide.

How to compare roof lantern prices fairly

A glazed kit and an unglazed frame are different purchases. Our Korniche lantern designer includes the selected double glazing. The Ultrasky designer offers a frame-only option as well as glass packages. Compare glazed with glazed, and check VAT, delivery and any extra work separately.

The two 1500 × 2500 mm lantern examples use grey aluminium inside and outside. The glass packages are named separately: matching a centre-pane U-value alone does not mean two products have identical solar control, light transmission or whole-lantern performance.

What changes the cost?

• Dimensions: larger frames and glass areas generally cost more. Bespoke sizes may be priced in bands while retaining your exact order dimensions.
• Frame: Ultrasky offers PVC and aluminium combinations; Korniche lanterns use aluminium inside and outside.
• Glazing: compare the named glass package, not just its colour. Solar-control and privacy choices change the specification.
• Delivery: review the charge for your delivery address at checkout or in your quotation.
• Installation: budget separately for the upstand, structural support, roof covering, lifting, labour and internal finishes.

Popular sizes and made-to-measure orders

A 1500 × 2500 mm or 2000 × 3000 mm lantern can create a very different effect depending on the room size and position. Use your installer’s confirmed external kerb dimensions for lanterns; do not copy the opening size from a drawing without checking what it measures. Our rooflight measuring guide explains why ordering references matter.

Flat rooflights use different measuring conventions. The Stratus flat-skylight example is an internal-kerb size; the Korniche flat-skylight example is an external-upstand size. These are not interchangeable openings even when the figures look the same.

Supply-only price versus installed cost

These figures are rooflight supply prices. They do not quote an installed roof or building work. Ask your installer to itemise preparation, supporting structure, weatherproofing, access, lifting and making good. That gives you a complete project budget without confusing a kit price with an installed price.

How long will delivery take?

Manufacturing and delivery estimates vary with the range, finish, glazing and current workload. Ask us for the estimate for your exact order before arranging time-sensitive installation. Read our delivery and returns information and tell us about restricted vehicle access or unloading requirements.

Which lantern should I choose?

Use our Korniche versus Ultrasky comparison to compare frame options, shape and glass inclusions. For a lower-profile rooflight, see flat rooflights and glass skylights.

Price a Korniche lantern · Price an Ultrasky lantern · Ask for help with your specification.