Custom Size Roof Lanterns Calculator

Custom-Size Roof Lantern Calculator

Design your perfect skylight with our Custom-Size Roof Lantern Calculator, a powerful tool that allows you to create a made-to-measure solution that suits your space, design preferences, and energy efficiency needs. Choose from three distinct styles — Contemporary, Regular, and Square — all engineered by Regal Glass Group to bring unmatched light, elegance, and innovation to your home.

Choose Your Style

Contemporary Roof Lantern

Elevate your interiors with sleek, minimalist beauty.

Minimalist Frameless Design: Ultra-low sightlines for an uninterrupted sky view.
Fitter-Friendly: Quick and easy installation with intuitive instructions.
Built for the Elements: Withstands harsh wind and snow conditions with a secure pressure-plated system.
Thermal Efficiency: U-value of 1.5 W/m²K (frame) and 1.0 W/m²K (glass), ensuring warmth and energy savings.
Solar Control Glass: Keeps interiors cool in summer and warm in winter.
Self-Cleaning Technology: UV and rain-activated for low-maintenance clarity.
Compliant & Covered: Toughened safety glass certified to BS EN 1279 and 12150, backed by a 10-year warranty.

Ideal for contemporary homes craving clean lines, modern aesthetics, and sustainable living.

Regular Roof Lantern

Timeless design meets next-level performance.

Elegant Geometry: Proportional and variable pitch designs with broad sky exposure.
Strength & Stability: Withstands up to 3.5 KN/m², ensuring longevity in tough conditions.
Advanced Thermal Breaks: U-values down to 0.95 W/m²K, keeping your home insulated year-round.
Solar Control & Self-Cleaning Glass: Maintains indoor comfort and minimal upkeep.
Architecturally Versatile: Blends seamlessly with both classic and modern interiors.

Perfect for those seeking a blend of traditional charm with modern performance.

Square Roof Lantern

A statement piece of light and design.

Ultra-Slim Rafters (4cm): More glass, less frame — maximum sky view.
Compact Brilliance: Ideal for smaller or symmetrical spaces requiring visual impact.
High Load Capacity: Engineered to handle up to 3.5 KN/m² with a robust ring beam.
Superior Energy Ratings: Thermal break design and glass U-value of 1.0 W/m²K.
Self-Cleaning & Solar Optimized: Low maintenance with high thermal regulation.
Bold Yet Balanced: Variable pitch and sleek proportions for clean aesthetics.

Designed to transform compact areas into show-stopping focal points of light and structure.

🔧 Tailored to You

Our calculator allows you to:

Select exact dimensions to fit your opening.
Choose your preferred design style.
Instantly view performance benefits per style.
Get a custom quote with ease.

Why Choose Our Roof Lanterns?

✔ Precision-built with EU craftsmanship

✔ Fully compliant with UK building regulations

✔ 10-year peace-of-mind warranty

✔ Premium glass technology with energy savings

Bring light to life with the Regal Glass Group Custom-Size Roof Lantern Calculator — where innovation, efficiency, and elegance meet tailored design.