Fixed Skylight Frameless Roof Window
Fixed Skylight Frameless Roof Window Price range: £ 106.62 through £ 2.157.59 incl. VAT
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Inclined Insulated Upstand for Flat Roof Skylight 500 x 3000 mm
Inclined Insulated Upstand for Flat Roof Skylight 500 x 3000 mm Original price was: £ 315.00.Current price is: £ 279.62. incl. VAT

Fixed Frameless Roof lights Certified BS & UKCA

Price range: £ 106.62 through £ 2.157.59 incl. VAT

Choose Your Skylight Size:

Roof Type: Flat and Pitched Roof
Glazing Type: Triple Glazed
Leakproof Design: Tested for Maximum Weather Resistance
Roof Pitch Range: 6° to 45°
Compliance: UKCA Certified, British Building Regulations
Next Day Delivery available
Free Delivery to most UK postcodes

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Description

Our Fixed Skylights are composed of three distinct glass panes, each contributing to the unit’s durability and thermal efficiency:

  • Top Pane: 6 mm Planibel Clearlite / Thermally toughened glass, compliant with BS EN 12150
  • Middle Pane: 4 mm Planibel Clearlite / Thermally toughened glass, compliant with BS EN 12150
  • Bottom Pane: Stratobel Clearlite 44.2 iplus 1.1 / Laminated glass with Low-E coating, compliant with EN 14449

Triple-Glazed Fixed Frameless Skylights

For Flat Roofs and Pitched Roofs (6° to 45° Roof Pitch)

Looking to bring more natural light into your home or project without compromising on insulation? Our Fixed Frameless Skylights are the perfect choice for both flat roofs and pitched roofs with slopes from 6° to 45°. Designed with triple glazing and warm edge spacer technology, these rooflights achieve an impressive U-value of 0.9 W/m²K, providing excellent thermal insulation to keep your space warm in winter and cool in summer — while flooding your interiors with natural daylight.

Why Choose Our Fixed Frameless Skylights?

  • Energy Efficiency:
    Triple-glazed units with warm edge spacer technology deliver outstanding thermal performance (U-value: 0.9 W/m²K), reducing heat loss and helping lower your energy bills.

  • Frameless Elegance & Unobstructed Views:
    The modern frameless design maximizes light entry and offers stunning, panoramic sky views.

  • Self-Cleaning Convenience:
    Equipped with a sunlight-activated self-cleaning coating for effortless maintenance and crystal-clear glass.

  • Versatile Installation:
    Suitable for both flat and pitched roofs with slopes between 6° and 45°, offering flexible installation options for a wide range of projects.

  • Sound Insulation for Peaceful Living:
    Provides effective sound reduction (39dB) for a quieter and more comfortable indoor environment.

  • UV Protection:
    Shields your interiors from harmful UV rays while maintaining excellent light transmittance (72%).

  • Safety Toughened Glass:
    Built with toughened, safety glass for maximum protection and peace of mind.

  • Regulation Compliant: Meets all British Standards & Building Regulations and carries the CE safety marking.

Essential Skylight Accessories

Upgrade your flat roof skylight experience with these essential add-ons for a seamless skylight installation and optimal performance:

  • Foam Rope—Structural Glazing Tape—9mm Thick (7.5m Rolls): This high-quality tape is a double threat during installation. It provides effective sealing to keep the elements at bay and crucial support for a secure fit.
  • Weatherproofing Sealant (Silicon)—DOWSIL™ 791, 310ml: This durable sealant is the key to a watertight seal around your skylight. It creates a weatherproof finish that keeps the elements out, ensuring your peace of mind and a comfortable indoor environment.
  • Self-Cleaning Liquid Smart Glass Bottle 15ml: This special solution replenishes the skylight’s self-cleaning properties, ensuring effortless maintenance and sparkling glass with minimal effort.

Choose Skylights.co.uk

We offer a variety of standard sizes readily available for purchase, along with custom skylights to suit your specific needs.

No matter the project, our flat roof lights provide:

Exceptional Thermal Performance

🧊 U-Value: As Low as 1.0 W/m²K – Maximum insulation for energy-efficient homes.
Part L Compliant – Fully meets UK Building Regulations for thermal performance.
🔲 Triple Glazed Glass – Extra protection from heat loss, noise & condensation.
🛡️ Toughened + Laminated Safety Glass – Impact-resistant and safe for overhead glazing.
☔️ No-Leak Guarantee – 20 Years – Designed to handle heavy UK rain and wind.

Customer Convenience & Peace of Mind

🚚 Fast UK Delivery – Delivered in 3–5 days. Tracked & insured shipping.
🔄 Free Returns (or Satisfaction Guarantee) – Change your mind? Easy returns within 15 days.
📞 Real Customer Support – UK-based team ready to help with quotes & specs.

Ease of Installation

Our skylights are designed for quick and secure fitting, with a flashing kit included for a watertight seal. Need help? Our expert installer support connects you with certified fitters or full installation services upon request.

Download our entire product catalogue to explore our extensive Frameless skylight range and find the perfect solution for your project.

Ready to discuss your skylight needs? Contact us today!

Additional information
Weight 6.45 kg
Dimensions 55 × 10 × 55 cm
Internal Glass Size

300 x 300 mm

,

400 x 400 mm

,

400 x 1500 mm

,

400 x 2000 mm

,

400 x 3000 mm

,

500 x 500 mm

,

500 x 1500 mm

,

500 x 3000 mm

,

600 x 600 mm

,

600 x 900 mm

,

600 x 1200 mm

,

600 x 1500 mm

,

600 x 1800 mm

,

600 x 2000 mm

,

600 x 2500 mm

,

600 x 3000 mm

,

800 x 800 mm

,

800 x 1000 mm

,

800 x 1200 mm

,

800 x 1500 mm

,

800 x 1800 mm

,

800 x 2000 mm

,

800 x 2500 mm

,

1000 x 1000 mm

,

1000 x 1200 mm

,

1000 x 1500 mm

,

1000 x 2000 mm

,

1000 x 2500 mm

,

1000 x 3000 mm

,

1200 x 1200 mm

,

1200 x 1800 mm

,

1200 x 2000 mm

,

1200 x 2500 mm

,

1500 x 1500 mm

,

1500 x 2000 mm

,

1500 x 2500 mm

,

1500 x 3000 mm

Glazing Type

Glass Tint

Self-Cleaning:

Yes

Roof Type

Flat Roof

,

Pitched Roof

Skylight Type

Frameless

Top Glass Pane:

6 mm Planibel Clearlite / Thermally toughened glass EN 12150

Air Gap

16 mm Argon 90%

Middle Glass Pane:

4 mm Planibel Clearlite / Thermally toughened glass

Air Gap

16 mm Argon 90%

Bottom Glass Pane:

Stratobel Clearlite 44.2 iplus 1.1 pos.5 / Laminated glass with Low-E coating EN 14449

Spacer Type

15mm Black Warm Edge

U value

0.9 [W/(m².K)]

Sound reduction - EN 12758

[dB] 39 (-2;-7)

Light transmittance: tv [%]

72

External light refection : ρv [%]

17

Internal light refection : ρvi [%]

17

Colour rendering index : Ra [%]

97

Solar energy transmittance : g [%]

57

Shading coefcient : SC

0.66

Selectivity

1.26

UV transmission : τuv [%]

0

Before and After

See how a space is completely transformed with our skylights.

  • Maximum daylight
  • Modern minimalist design
  • Superior thermal insulation (U-value as low as 0.9 W/m²K)
  • UV protection to preserve interiors
  • Excellent noise reduction for a quieter home
  • Toughened & laminated glass for enhanced safety
  • Low-maintenance self-cleaning glass

One change. Total transformation. 

Reasons to Choose Skylights.co.uk?

Quick Shipping

Get it fast with our expedited shipping options.

Secure Payment

Shop safely with our secure online checkout.

Easy Returns

Hassle-free returns within 30 days.

20 Year Warranty

Enjoy peace of mind with our extensive warranty.

Frameless Skylights Glass Performance

Experience the perfect blend of natural light, energy efficiency, noise reduction, and UV protection with our precision-engineered glass.

Modern Design
100%
Solar energy transmittance (G value): g [%] 65
65%
UV transmission : 0 τuv [%]
0%
Light transmittance: τv [%] 72
72%
Thermal transmittance (U value): : 0.9 [W/(m².K)]
Min 3.0 [W/(m².K)] / Max 0.1 [W/(m².K)] 70%
Shading coefficient: 0.66 SC
( Maximum SC 1.00 / Maximum SC 0.20 ) 42%
Sound Reduction: 39 dB (-2;-7)
( Maximum 40dB / Minimum 30dB ) 90%

Easy to replicate
Installation Guide

Dive into our user-friendly Installation Guide for a smooth skylight setup. Get the clarity you need, step-by-step.

Click below to explore the full guide.

FAQ

What’s the U-value and how energy efficient is it?

Our triple-glazed models offer U-values as low as 0.9 W/m²K (whole unit), helping you meet Part L regulations and reduce heat loss.

Does it come with self-cleaning glass?

Yes. All our skylights come with self-cleaning glass as standard to reduce dirt buildup.

Can I order custom sizes?

Yes. We offer made-to-measure rooflights to fit your exact requirements. Contact us for a custom quote.

Is it really leak-proof?

Yes. When installed with our official flashing kit and according to instructions, it is guaranteed to be watertight. 

Is the glass safe and shatterproof?

Absolutely. Each unit uses toughened outer and laminated inner glass that complies with UK safety standards (EN12150 / EN14449).

How long is the warranty?

We offer a 20-year guarantee on the glazing unit.

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