Supplied & installed · FENSA registered
Korniche Roof Lanterns
The UK's most advanced aluminium roof lantern — 40mm internal ridge (slimmest on market), thermally broken aluminium, snap-fit glazing, spans up to 6m × 4m. Vitrum Solutions supplies AND installs every Korniche we fit — never DIY. FENSA registered with 10-year CPA insurance-backed guarantee.
System Specifications
Brand
Korniche (Made for Trade)
Internal Ridge
40mm — slimmest on UK market
Thermal
U-value from 1.2 W/m²K
Maximum Span
6m × 4m
Korniche Range & Related Guides
Korniche Roof Lanterns
Full specs, sizes, glass options and gallery
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Independent review: is Korniche the best on the market?
Read more →Why Korniche
40mm Internal Ridge — UK Market Leader
The slimmest internal ridge on the UK market for maximum sky views and uninterrupted daylight. Other aluminium roof lanterns typically have 60-80mm ridges that visually block sightlines.
Patented Snap-Fit Installation
No external capping, no visible fixings, no silicone mess. Korniche's patented glazing system clips together for faster installation, cleaner lines and better long-term weather sealing. Every detail is engineered for permanence.
Class-Leading Thermal Performance
Thermally broken aluminium frame with argon-filled double glazing achieves U-values from 1.2 W/m²K. Meets and exceeds current Building Regulations Approved Document L. Solar control glass options (blue or neutral) regulate heat gain in summer.
Made to Measure — 6m × 4m Max Span
Manufactured to exact opening dimensions. Spans up to 6m × 4m for large extension rooflights. Rectangular, square and custom aspect ratios available. Any RAL colour powder-coat externally with white or anthracite internal finish.
Optional Pilkington Activ Self-Cleaning Glass
Upgrade to Pilkington Activ — the self-cleaning coating reacts with UV light to break down organic dirt, and rainwater then sheets away residue. Maintenance-free glazing that stays clearer for longer between cleans.
Vitrum Solutions — Supply AND Install
We supply AND install every Korniche — never DIY or self-fit. Our structural opening surveys, weather detailing and professional installation mean zero leaks and a correctly-loaded frame. Every installation is FENSA registered with a 10-year CPA insurance-backed guarantee.
Get a free quote for Korniche Roof Lanterns
Free no-obligation written quote. Fast response times. FENSA registered with a 10-year CPA insurance-backed guarantee. Serving Buckinghamshire, Berkshire, Oxfordshire, Surrey, Hampshire, Hertfordshire & West London.
Frequently Asked Questions
What is a Korniche roof lantern?
Korniche is a premium aluminium roof lantern system manufactured in the UK by Made for Trade. It features the slimmest internal ridge on the UK market (40mm), thermally broken aluminium, patented snap-fit glazing, and spans up to 6m × 4m. Korniche is widely specified by architects and builders for premium extensions, kitchen extensions and loft conversions.
Do you supply and install Korniche?
Yes. Vitrum Solutions supplies AND installs Korniche roof lanterns — never DIY or self-fit kits. Our team handles the structural opening survey, weather detailing, kerb formation, lantern fitting and internal plasterboard making-good. Every installation is FENSA registered with a 10-year CPA insurance-backed guarantee. We cover Buckinghamshire, Berkshire, Oxfordshire, Surrey, Hampshire, Hertfordshire and West London.
How much does a Korniche roof lantern cost?
Final price depends on lantern size, glass specification (double-glazed standard, solar-control or self-cleaning options) and roof type. Every Vitrum Solutions installation includes site survey, supply, professional installation, structural sign-off where required, FENSA registration and a 10-year CPA insurance-backed guarantee. Request a free no-obligation quote on 0800 861 1450.
Do Korniche roof lanterns need planning permission?
In most cases no — if the lantern doesn't extend more than 150mm above the existing roof slope, it falls under permitted development. Listed buildings and conservation areas may need approval. Our team can advise during the free survey. Full guide: /blog/do-roof-lanterns-need-planning-permission.
How does Korniche compare to other roof lanterns?
Korniche's 40mm internal ridge is the slimmest on the UK market — most alternatives are 60-80mm. It's also significantly more thermally efficient than cheaper aluminium lanterns (U-value from 1.2 W/m²K vs 1.6-1.8 for budget options). Snap-fit installation is faster and more weatherproof than silicone-sealed systems. For our clients in premium extensions and kitchen extensions, Korniche is the default choice.
Will a Korniche lantern make the room too hot?
Not with solar control glass. Korniche offers blue-tinted or neutral solar control options that regulate heat gain and glare. On south-facing extensions we recommend solar control glass as standard. Pilkington Activ self-cleaning glass is also available as an upgrade.
What warranties do you offer?
Every Korniche installation is FENSA registered with a 10-year CPA insurance-backed guarantee covering our workmanship. The Korniche manufacturer warranty covers the lantern frame (20 years) and the sealed glass units (10 years).
Interested in a Korniche roof lantern?
Free quote · FENSA registered · 10-year CPA insurance-backed guarantee
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