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Cambridge HorizonLite Fixed Frameless Roof Window 1200x2500mm

by Cambridge Skylights

SKU: 5065009232208

£1,387

Unit price: per

Trade Prices

Always trade prices, never retail markup.

Free Shipping

Free shipping on our HorizonLite range.

25-YEAR WARRANTY

Confidence in our skylights, year after year.

Cambridge HorizonLite Fixed Frameless Roof Window 1200x2500mm

Name: Cambridge HorizonLite Fixed Frameless Roof Window 1200x2500mm
Brand: Cambridge Skylights
SKU: 5065009232208
Price: 1387.0 GBP
Availability: InStock

by Cambridge Skylights

SKU: 5065009232208

£1,387

Unit price: per

Leak-proof

25-year warranty

Roof pitch 0-45°

u-Value 0.8 W/m²K

Availability

Trade Prices

Always trade prices, never retail markup.

Free Shipping

Free shipping on our HorizonLite range.

25-YEAR WARRANTY

Confidence in our skylights, year after year.

Bring the Sky Indoors — Modernise Your Space with Natural Light and Limitless Views

Introducing the Cambridge HorizonLite Fixed Frameless Roof Window — the ultimate solution for homeowners who crave more light, more beauty, and a seamless connection to the outdoors. Designed for those who value clean architecture and long-lasting performance, HorizonLite transforms any room into a serene, light-filled sanctuary.

🌤️ Why Choose the Cambridge HorizonLite Fixed Roof Window?

Frameless Design for Pure, Panoramic Views
Say goodbye to visual clutter. HorizonLite’s frameless, minimalist aesthetic delivers unobstructed sky views — from dreamy cloudscapes to starlit evenings — enhancing your mood and expanding your sense of space.

Zero Leaks, Zero Worries
Crafted with cutting-edge engineering, the HorizonLite is fully sealed and leak-proof — perfect for all weather conditions. Enjoy the beauty of nature without any of the stress.

Save Energy, Save Money
Built with Thermix® TX Pro® Warm Edge technology, our roof window provides industry-leading insulation (U-Value: 0.8 W/m²K) — keeping your home cosy in winter and cool in summer. Lower energy bills and reduce your carbon footprint effortlessly.

Built to Last, Easy to Maintain
Made from high-performance, weather-resistant materials, HorizonLite requires virtually no upkeep. It’s a long-term investment in comfort, beauty, and peace of mind.

Architect-Approved German Engineering
Combining German precision with modern British design, HorizonLite is trusted by architects and interior designers for its reliability, performance, and sleek visual impact.

💡 Perfect For:

Contemporary renovations and extensions

Any room (kitchens, living rooms, hallways, bedrooms, bathrooms, stairwells, etc.)

Homeowners looking to increase property value and kerb appeal

🛒 Upgrade Your Home Today

Whether you're building new or refreshing an existing space, the Cambridge HorizonLite Fixed Frameless Roof Window is the key to brighter rooms, lower energy costs, and timeless style. Don’t just renovate — elevate your home.

👉 Shop now and experience natural light like never before.

Glazing Specs

Glazing type: Triple glazed
Glass brand: Saint-Gobain
Top glass pane: 6mm BS EN 12150 thermally toughened glass
Spacer type: 16mm Thermix® TX Pro®
Middle glass pane: 4mm BS EN 12150 thermally toughened glass
Spacer type: 16mm Thermix® TX Pro®
Air gap: 90% argon filled
Bottom glass pane: 44.2 low-e BS EN 14449 laminate glass
UV protected: Yes
G-value (%): 54
U-value (Ug) (W/m²K): 0.8
Acoustics reduction (dB): -42

Size & Weight

Quoted Internal Size (mm)	External Size (mm)	Weight (kg)
300x300	500x500	8
400x400	600x600	12
500x500	700x700	14
600x600	800x800	28
600x900	800x1100	32
600x1200	800x1400	49
600x1500	800x1700	50
600x1800	800x2000	58
600x2000	800x2200	65
600x2500	800x2700	92
800x800	1000x1000	42
800x1000	1000x1200	46
800x1200	1000x1400	59
800x1500	1000x1700	72
800x1800	1000x2000	85
800x2000	1000x2200	91
800x2500	1000x2700	106
1000x1000	1200x1200	61
1000x1200	1200x1400	71
1000x1500	1200x1700	85
1000x2000	1200x2200	99
1000x2500	1200x2700	111
1000x3000	1200x3200	133
1200x1200	1400x1400	89
1200x1800	1400x2000	92
1200x2000	1400x2200	118
1200x2500	1400x2700	131
1500x1500	1700x1700	137
1500x2000	1700x2200	152
1500x2500	1700x2700	189
1500x3000	1700x3200	223

Installation Guide

Upgrade your space with ease using our Cambridge HorizonLite skylights, designed for quick installation in six easy steps — no drilling or loose parts required. Enhance your purchase with an optional fitting kit, packed with all the sealants and tape you'll need.

Check out our installation guide for tips, or get in touch for expert advice.

📄 Download PDF Guide

🎬 Watch Video - Flat Roofs

🎬 Watch Video - Pitched Roofs

Measuring Tip

At Cambridge Skylights, we quote our skylights based on their internal sizes - which should match the roof opening size. However, please note that our skylights have a total width and length of 200mm wider than the internal size, with an extra 100mm on each side; this dimension is the external measurement of the skylight. Ensure that the external size of our skylights is wider than your roof opening to guarantee a proper fit.
The frameless design of our skylights allows them to be installed in either portrait or landscape orientation, giving you more flexibility in your installation options.
Product FAQs

Q: What makes the Cambridge HorizonLite different from other skylights?
A: The Cambridge HorizonLite Fixed Roof Window offers a frameless design that provides uninterrupted panoramic views and a modern aesthetic. Its superior German engineering, including the Thermix® TX Pro® Warm Edge spacer, achieves excellent energy efficiency with a notable U-Value of 0.8 W/m2K.
Q: How does the frameless design of the HorizonLite enhance my home?
A: The innovative frameless design of the HorizonLite brings in natural light and offers expansive views of the sky, creating a sense of openness and connection to the outdoors without the interruption of visible frames.
Q: Is the HorizonLite designed to be leak-proof?
A: Yes, the HorizonLite is engineered with precision for a leak-proof design, providing both durability and peace of mind.
Q: What are the maintenance requirements for the HorizonLite?
A: The HorizonLite is constructed to withstand harsh weather conditions and is designed to be low maintenance, saving time and effort in its upkeep.
Q: Can the HorizonLite help me save on energy bills?
A: Absolutely. The HorizonLite excels in thermal insulation, reducing heat loss significantly. This not only helps in lowering energy bills but also makes it an eco-friendly addition to any home.
Q: Is there a warranty for the HorizonLite Fixed Roof Window?
A: Yes, we provide a 25-year unit seal warranty for the HorizonLite. Please contact us directly for the specific details and duration of the warranty coverage.

Shipping FAQs

Q: How much does shipping cost?
A: Shipping costs to England, Wales, and Scotland vary and will be displayed at checkout based on your postcode.
Q: Is there an express shipping option?
A: Yes, express services are available on certain products and details will be provided at checkout.
Q: Is there free delivery available?
A: Free standard delivery is offered for orders exceeding £2000, applicable only to mainland England.
Q: What if my postcode isn't displayed at checkout?
A: If your postcode isn't displayed, you can contact us for a custom shipping quote.
Q: Can I collect my order in person?
A: Collections are welcome but need to be pre-scheduled by calling us beforehand.

Returns & Exchanges FAQs

Q: What is the return policy?
A: We offer a 14-day return policy from the day you receive your item. Products must be unused, unopened, and in the original packaging, with proof of purchase included.
Q: Can I cancel my order?
A: You can cancel your order within 14 days of placement, provided it has not been dispatched, for a full refund.
Q: Are there any fees for returns?
A: Delivery fees are non-refundable, and a handling fee of 10% is applied to each return.
Q: What if my item arrives damaged?
A: If an item arrives damaged, contact us with your order number and photographic evidence within 30 days of delivery to initiate a warranty claim.

Product Description

Bring the Sky Indoors — Modernise Your Space with Natural Light and Limitless Views

Introducing the Cambridge HorizonLite Fixed Frameless Roof Window — the ultimate solution for homeowners who crave more light, more beauty, and a seamless connection to the outdoors. Designed for those who value clean architecture and long-lasting performance, HorizonLite transforms any room into a serene, light-filled sanctuary.

🌤️ Why Choose the Cambridge HorizonLite Fixed Roof Window?

Frameless Design for Pure, Panoramic Views
Say goodbye to visual clutter. HorizonLite’s frameless, minimalist aesthetic delivers unobstructed sky views — from dreamy cloudscapes to starlit evenings — enhancing your mood and expanding your sense of space.
Zero Leaks, Zero Worries
Crafted with cutting-edge engineering, the HorizonLite is fully sealed and leak-proof — perfect for all weather conditions. Enjoy the beauty of nature without any of the stress.
Save Energy, Save Money
Built with Thermix® TX Pro® Warm Edge technology, our roof window provides industry-leading insulation (U-Value: 0.8 W/m²K) — keeping your home cosy in winter and cool in summer. Lower energy bills and reduce your carbon footprint effortlessly.
Built to Last, Easy to Maintain
Made from high-performance, weather-resistant materials, HorizonLite requires virtually no upkeep. It’s a long-term investment in comfort, beauty, and peace of mind.
Architect-Approved German Engineering
Combining German precision with modern British design, HorizonLite is trusted by architects and interior designers for its reliability, performance, and sleek visual impact.

💡 Perfect For:

Contemporary renovations and extensions
Any room (kitchens, living rooms, hallways, bedrooms, bathrooms, stairwells, etc.)
Homeowners looking to increase property value and kerb appeal

🛒 Upgrade Your Home Today

Whether you're building new or refreshing an existing space, the Cambridge HorizonLite Fixed Frameless Roof Window is the key to brighter rooms, lower energy costs, and timeless style. Don’t just renovate — elevate your home.

👉 Shop now and experience natural light like never before.

Technical Specs

Glazing Specs

Size & Weight

Quoted Internal Size (mm)	External Size (mm)	Weight (kg)
300x300	500x500	8
400x400	600x600	12
500x500	700x700	14
600x600	800x800	28
600x900	800x1100	32
600x1200	800x1400	49
600x1500	800x1700	50
600x1800	800x2000	58
600x2000	800x2200	65
600x2500	800x2700	92
800x800	1000x1000	42
800x1000	1000x1200	46
800x1200	1000x1400	59
800x1500	1000x1700	72
800x1800	1000x2000	85
800x2000	1000x2200	91
800x2500	1000x2700	106
1000x1000	1200x1200	61
1000x1200	1200x1400	71
1000x1500	1200x1700	85
1000x2000	1200x2200	99
1000x2500	1200x2700	111
1000x3000	1200x3200	133
1200x1200	1400x1400	89
1200x1800	1400x2000	92
1200x2000	1400x2200	118
1200x2500	1400x2700	131
1500x1500	1700x1700	137
1500x2000	1700x2200	152
1500x2500	1700x2700	189
1500x3000	1700x3200	223

Installation Guide

FAQs

Product FAQs

Q: What makes the Cambridge HorizonLite different from other skylights?
A: The Cambridge HorizonLite Fixed Roof Window offers a frameless design that provides uninterrupted panoramic views and a modern aesthetic. Its superior German engineering, including the Thermix® TX Pro® Warm Edge spacer, achieves excellent energy efficiency with a notable U-Value of 0.8 W/m2K.

Q: How does the frameless design of the HorizonLite enhance my home?
A: The innovative frameless design of the HorizonLite brings in natural light and offers expansive views of the sky, creating a sense of openness and connection to the outdoors without the interruption of visible frames.

Q: Is the HorizonLite designed to be leak-proof?
A: Yes, the HorizonLite is engineered with precision for a leak-proof design, providing both durability and peace of mind.

Q: What are the maintenance requirements for the HorizonLite?
A: The HorizonLite is constructed to withstand harsh weather conditions and is designed to be low maintenance, saving time and effort in its upkeep.

Q: Can the HorizonLite help me save on energy bills?
A: Absolutely. The HorizonLite excels in thermal insulation, reducing heat loss significantly. This not only helps in lowering energy bills but also makes it an eco-friendly addition to any home.

Q: Is there a warranty for the HorizonLite Fixed Roof Window?
A: Yes, we provide a 25-year unit seal warranty for the HorizonLite. Please contact us directly for the specific details and duration of the warranty coverage.

Shipping FAQs

Q: How much does shipping cost?
A: Shipping costs to England, Wales, and Scotland vary and will be displayed at checkout based on your postcode.

Q: Is there an express shipping option?
A: Yes, express services are available on certain products and details will be provided at checkout.

Q: Is there free delivery available?
A: Free standard delivery is offered for orders exceeding £2000, applicable only to mainland England.

Q: What if my postcode isn't displayed at checkout?
A: If your postcode isn't displayed, you can contact us for a custom shipping quote.

Q: Can I collect my order in person?
A: Collections are welcome but need to be pre-scheduled by calling us beforehand.

Returns & Exchanges FAQs

Q: What is the return policy?
A: We offer a 14-day return policy from the day you receive your item. Products must be unused, unopened, and in the original packaging, with proof of purchase included.

Q: Can I cancel my order?
A: You can cancel your order within 14 days of placement, provided it has not been dispatched, for a full refund.

Q: Are there any fees for returns?
A: Delivery fees are non-refundable, and a handling fee of 10% is applied to each return.

Q: What if my item arrives damaged?
A: If an item arrives damaged, contact us with your order number and photographic evidence within 30 days of delivery to initiate a warranty claim.