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Meet the NEW FLATLITE Roof Light

FlatLite is the most budget-friendly addition to the Korniche range, crafted to enhance homes and light commercial spaces with natural light and refined style, especially when cost is a key consideration. Precision-engineered to Korniche’s high standards, it delivers outstanding value without sacrificing design or quality.

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Large roof lantern above an open-plan kitchen extension with sliding doors to the garden

What Size Roof Lantern Do I Need? A Room-by-Room Sizing Guide (2026)

Order your roof lantern to the external kerb size, not the ceiling opening. Our sizing guide covers measuring the kerb, the right lantern for 3x3m to 6x4m extensions, one large lantern versus two, ridge height, glass weight and bar sightlines, with live Korniche size and price data.

Read moreabout What Size Roof Lantern Do I Need? A Room-by-Room Sizing Guide (2026)

Two roof lanterns on a new extension for a stunning house development

Korniche Roof Lantern Prices Explained: What You'll Pay in 2026 (and Why)

Written By Daniel Calvert Glazing Store Team Expert analysis from the UK's Korniche Roof Lantern specialists, with over 25 years of trusted home improvement experience. Short answer: a Korniche aluminium roof lantern costs between £662 and £3,969 including VAT at...

Read moreabout Korniche Roof Lantern Prices Explained: What You'll Pay in 2026 (and Why)

Two fitters lowering a glass unit into an aluminium roof lantern frame on a flat roof kerb

How to Install a Korniche Roof Lantern: Step-by-Step Guide (2026)

How to fit a Korniche roof lantern from kerb to caps: upstand requirements, the four tools you need, each fitting stage in order, how long it takes, why lanterns leak and how to fix it, and Building Regulations.

Read moreabout How to Install a Korniche Roof Lantern: Step-by-Step Guide (2026)