triple glazed flat roof skylight 1500 x 3000 mm with extra large premium glazing
Flat Roof Skylight 1500 x 3000 mm – Fixed Frameless Triple Glazed – U-Value 0.9 Original price was: £ 3.037.00.Current price is: £ 2.036.03. incl. VAT
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frameless flat roof skylight 1200 x 1800 mm with broad glazed coverage
Flat Roof Skylight 1200 x 1800 mm – Fixed Frameless Triple Glazed – U-Value 0.9 Original price was: £ 988.00.Current price is: £ 711.20. incl. VAT
-21%
modern flat roof roof window 600 x 2500 mm with extended glass line
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 2
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 3
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 4
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 5
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 6
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 7
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 8
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 9
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 10
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 11
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 12
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Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 14
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 15
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 16
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 17
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 18
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 19
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 20
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 21
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 22
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 23
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 24
Watch video
modern flat roof roof window 600 x 2500 mm with extended glass line
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 2
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 3
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 4
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 5
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 6
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 7
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 8
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 9
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 10
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 11
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 12
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 13
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 14
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 15
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 16
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 17
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 18
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 19
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 20
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 21
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 22
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 23
Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9 - Image 24

Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9

(1 customer review)

Original price was: £ 867.00.Current price is: £ 686.03. incl. VAT

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LIVE STATUS: 3 units remaining

KingsView 600x2500mm Frameless Flat Roof Skylight – A sleek 0.6m x 2.5m Triple Glazed slimline unit designed for gallery-style kitchen extensions and corridors. Featuring an industry-leading 0.9 W/m²K U-Value, this architectural rooflight maximizes natural light while maintaining superior thermal insulation.

Structural Strength & Safety: Built for long-span durability, our KingsView series is 100% leakproof and features Thermally Toughened & Laminated Safety Glass. At 77.4kg, this unit is engineered with a frameless edge-to-edge design to prevent the water pooling and sagging common in cheaper, thinner alternatives.

  • Internal Size: 600 x 2500 mm (0.6m x 2.5m)
  • Glazing Spec: Triple Glazed (with Stratobel Laminated Safety Glass)
  • Performance: 0.9 W/m²K U-Value & 39dB Sound Proofing
  • Maintenance: Sunlight-activated Self-Cleaning Glass technology
  • Compliance: UKCA Certified, 20-Year Warranty & Building Regs Compliant
  • Delivery: Specialist UK shipping direct from the manufacturer

The ultimate slimline daylight solution for modern architecture. Engineered for high performance and a clean, minimalist “glass-to-sky” aesthetic.

CE & ISO CERTIFIED
Precision Fit: 10-year leak-proof warranty included.
Transit-Safe: Arrived damaged? We swap it in 24h.

3 in stock (can be backordered)

extra long upstand 600 x 2500 mm OSB insulated rooflight base
Inclined Insulated Upstand for Flat Roof Skylight 600 x 2500 mm

3 in stock (can be backordered)

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Original price was: £ 346.72.Current price is: £ 288.93. incl. VAT
electric blackout rooflight blind 600x2500 mm white shade with Somfy RTS
Skylight Blinds for Flat Roof Window 600x2500mm - Translucent, Hardwired
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Original price was: £ 792.75.Current price is: £ 715.42. incl. VAT
Installation kit for 1 x Flat Roof Skylight 600x2500mm
Installation kit for 1 x Flat Roof Skylight 600x2500mm
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+
£ 72.45 incl. VAT
Foam Rope - Structural Glazing Tape – 9mm Thick (7.5m Rolls)
Foam Rope - Structural Glazing Tape – 9mm Thick (7.5m Rolls)
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£ 24.00 incl. VAT
Weatherproofing Sealant (Silicon) - DOWSIL™ 791, 310ml
Weatherproofing Sealant (Silicon) - DOWSIL™ 791, 310ml
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+
£ 16.15 incl. VAT
Self-Cleaning Liquid Smart Glass Bottle 15ml
Self-Cleaning Liquid Smart Glass Bottle 15ml
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+
£ 30.00 incl. VAT
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Specifications
Installation Drawing
flat-roof-skylight-frameless-rooflight-drawing-description-600-x-2500-mm-rev1
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Delivery & Return

Delivery & Return

Free delivery for custom size skylights and all orders delivered within London M25 area. For your convenience we offer Nationwide Delivery and Next Day Delivery Option.

Delivery Options Overview

Free Delivery

We offer free delivery on:

  • All custom-size skylights

  • All orders within the London M25 area

  • Selected UK postcodes

Nationwide & Next-Day Delivery

To make your experience as smooth as possible, we offer:

  • Nationwide delivery across the UK

  • A Next-Day Delivery option (subject to availability)

Delivery Timeframes

  • Standard orders are delivered within 3–6 working days, unless the item is on back-order.

Once your payment has been received, we will contact you directly to arrange a suitable delivery time.

💡 To calculate your delivery cost, simply add the products to your cart and enter your shipping address.

Important Notice Before Delivery

Please do not book cranes, equipment, or labour until your delivery date is confirmed, as we cannot take responsibility for any scheduling conflicts.

Deliveries Within the London M25 Area

  • All deliveries in the London M25 area are handled directly by our in-house delivery team to ensure the safe and secure arrival of your products.

  • As our drivers work solo and vehicles are pre-loaded at our warehouse, we ask that you or your builders be present onsite to assist with unloading.

Deliveries Outside the M25

  • For addresses outside the M25, we work with a trusted external courier network.

  • Once dispatched, the courier will contact you to schedule a delivery time.

Delivery Schedule

Deliveries are made:

  • Monday to Friday

  • Between 8:00 a.m. and 5:00 p.m.

  • In rare cases, delivery may be delayed due to traffic up to 8:00 p.m.

While we can provide a 1–2 hour notice on the day of delivery, we unfortunately cannot guarantee an exact delivery time or specific timeslot.

Shipping Restrictions & Notes

  • Extra Economy Shipping is available across the UK excluding Northern Ireland and Scotland.

  • In some rare cases, if couriers do not have suitable vehicles to access your property, you may be asked to collect your order from a local depot (usually within a 20-minute drive).

Product Weight & Unloading Responsibility

Our products are heavy, ranging from 10kg to 280kg. Depending on your order, 2, 4, or even 6 people may be required to unload or handball safely.

In some cases the vehicle of the courier might not be equipped with a tail lift, in which case every customer has the right to disassemble the pallet and remove the units one by one, keeping their wooden frames for safety reasons.

🔧 Skylights.co.uk is not liable for any damages caused during unloading. It is the customer’s responsibility to arrange sufficient help for unloading on site.

Missed Delivery Protocol

If no one is available to receive the delivery, our driver will attempt to contact you via phone, text, and voicemail.

If we are unable to make contact, the delivery will be returned to our warehouse and a new delivery will need to be arranged.

Delivery Options

Nationwide

Standard Delivery
Get it in 3-6 working days

All orders within London M25. We deliver Monday to Friday between 8am-5pm.

Nationwide

Next Day
Delivery

The orders received until 12:00pm can be delivered on next working day. There is an additional charge.

London

Local Pickup
From Our Warehouse

You can pick it from our warehouse on this specific time: Monday to Friday between 8am-5pm.

 

Nationwide

Delivery Of
Custom Size Skylights

Delivered for free of charge. Usually takes between 3 to 6 weeks to be made and shipped over to UK.

    How it Works?

    Step 1

    Order the Product and Receive Email with Order confirmation

    Step 2

    Update on your Delivery Date with Message or Call

    Step 3

    Wait for Your Order to Arrive

    Step 4

    Arange people to help you load of the skylight

    Step 5

    Accept your Delivery with our Drivers or Book Suitable Delivery Date with Depot.

      Exchange or Return of Goods

      A 25% restocking fee will be charged on all returned merchandise, unless defective.
      Skylights1.com is not responsible for any labor costs, which occur as the result of the installation of wrong or defective parts. If your shipment arrives and appears damaged please inspect the package thoroughly and if the contents appear damaged please refuse the shipment. We will do everything we can to have a new order rushed out to you. Return ship fees are the responsibility of the customer. Refunds for returned items are processed within 10 working days.

      Before placing an order, please make sure that you have chosen the correct unit size and have consulted your roofer in advance. If you have purchased the wrong size(s), we will have to cancel and refund the whole order. In this case we will deduct up to 5% transaction fee and in the cases when we have already sent your order, we will also deduct the return shipping fees. Please keep in mind that refunds are processed within 10 working days after units are returned to our warehouse.

      The following items may be returned for a refund within 15 days of purchase:

      • Merchandise that has not been removed from its original packing.
      • Defective merchandise.
      • Merchandise that was mispacked or was not shipped correctly.
      • Merchandise that has not been installed. 
      skylights-co-uk-logo-final
      Download Brochure
      See other sizes in stock

      Flat Roof
      Frameless Triple Glazed
      Skylights In Stock

      Internal Size (quoted)External Size
      300x300mm500x500mm
      400x400mm600x600mm
      400x1500mm600x1700mm
      400x2000mm600x2200mm
      400x3000mm600x3200mm
      500x500mm700x700mm
      500x1500mm700x1700mm
      500x3000mm700x3200mm
      600x600mm800x800mm
      600x900mm800x1100mm
      600x1200mm800x1400mm
      600x1500mm800x1700mm
      600x1800mm800x2000mm
      600x2000mm800x2200mm
      600x2500mm800x2700mm
      600x3000mm800x3200mm
      800x800mm1000x1000mm
      800x1000mm1000x1200mm
      800x1200mm1000x1400mm
      800x1500mm1000x1700mm
      800x1800mm1000x2000mm
      800x2000mm1000x2200mm
      800x2500mm1000x2700mm
      1000x1000mm1200x1200mm
      1000x1200mm1200x1400mm
      1000x1500mm1200x1700mm
      1000x2000mm1200x2200mm
      1000x2500mm1200x2700mm
      1000x3000mm1200x3200mm
      1200x1200mm1400x1400mm
      1200x1800mm1400x2000mm
      1200x2000mm1400x2200mm
      1200x2500mm1400x2700mm
      1500x1500mm1700x1700mm
      1500x2000mm1700x2200mm
      1500x2500mm1700x2700mm
      1500x3000mm1700x3200mm
      Custom size calculator - 300 - 3000 mm
      Custom size calculator - 300 - 5800 mm

      Our Flat Roof 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 BS EN 12150
      • Middle Pane: 6 mm iplus Thermally toughened glass with Low-E coating EN 12150
      • Bottom Pane: Stratobel Clearlite 44.2 / Laminated glass EN 14449

      Premium Flat Roof Skylights

      Thinking about adding a skylight but worried about heat loss? Our Flat Roof Skylight measuring 600 x 2500 mm features an impressive U-value of 0.9 W/m²K, thanks to its triple-glazed units and warm edge spacer technology. This provides superior insulation, keeping your space warm in winter and cool in summer, while allowing in abundant natural light.

      Why Choose Our Frameless Flat Roof Windows

      • Energy Efficiency: Experience outstanding thermal performance with our triple-glazed units and warm edge spacer technology, resulting in a U-value of 0.9 W/m²K for year-round comfort and reduced energy expenses.
      • Unobstructed Views: The frameless design maximizes natural light penetration and offers breathtaking panoramic views of the sky.
      • Self-Cleaning Feature: Enjoy easy maintenance with a sunlight-activated self-cleaning feature that keeps your glass sparkling clean.
      • Versatile Installation: Ideal for flat roofs with pitches between 6° and 45°, making it suitable for various home styles.
      • Quiet Ambiance: Effective soundproofing ensures a peaceful indoor environment.
      • UV Protection: Safeguards your interior from harmful UV rays.
      • Safety First: Built with safety-toughened glass for enhanced security.
      • Regulation Compliant: Fully compliant with British Standards & Building Regulations and carries the CE safety marking.

      Essential Skylight Accessories

      Enhance your skylight windows for flat roofs experience with these must-have accessories for smooth installation and optimal performance:

      • Skylight Blinds for Flat Roof Window 600x2500mm: Custom-fit blinds provide light control and privacy, perfectly tailored to your skylight size.
      • Installation Kit for 1 x Flat Roof Skylight 600x2500mm: A comprehensive kit that ensures secure and hassle-free installation for optimal performance and durability.
      • Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls): Offers effective sealing and structural support during installation.
      • Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml: Creates a durable, weatherproof seal around your skylight, keeping the elements out.
      • Self-Cleaning Liquid Smart Glass Bottle 15ml: Replenishes the self-cleaning properties of your skylight, ensuring easy maintenance and spotless glass.

      Choose Skylights.co.uk

      We offer an extensive range of standard sizes, including the popular 2500 x 600 mm skylight (also known as 2.5 x 0.6 m roof light), as well as fully custom roof windows for flat roofs designed to enhance your space:

      • Exceptional Thermal Performance: Triple glazing ensures superior insulation and comfort throughout the year.
      • Natural Light Abundance: Our skylights flood your space with beautiful natural light, creating a bright and inviting atmosphere.
      • Elegant Design: Sleek, modern designs that add a touch of sophistication to any setting.

      Download our full product catalogue to discover more about our extensive range of flat roof skylights and find the perfect solution for your project.

      Ready to discuss your skylight needs? Contact us today!

      🗺️ Where to Buy 600 x 2500 mm Roof Lights Near Me

      Looking to add a 600 x 2500 mm roof light near you? Also known as a 0.6 x 2.5 m skylight, this format is designed to introduce long streams of natural light into slim extensions, kitchen diners, and corridor spaces. Our frameless flat rooflights are engineered for clean aesthetics, structural reliability, and high thermal performance.

      ✅ Slimline Large Skylight – Ideal for Narrow Extensions
      ✅ Bespoke Sizes Available with Manufacturer Pricing
      ✅ Built for UK Weather – No Leaks, No Condensation
      ✅ 20-Year Warranty – Guaranteed Durability
      ✅ Fast, Direct Delivery from Our UK Workshop

      Whether you’re building new or renovating, our UKCA-certified skylights bring clarity and light to every corner—shipped nationwide with full support.

      Weight82.40 kg
      Dimensions of packaging275 × 10 × 85 cm
      BrandKingsView
      Internal Size600 x 2500 mm
      External Size800 x 2700 mm
      Glazing Type
      Glass Tint
      Self-Cleaning:Yes
      Roof TypeFlat Roof, Pitched Roof
      Skylight TypeFrameless
      Top Glass Pane:6 mm Planibel Clearlite / Thermally toughened glass EN 12150
      Air Gap16 mm Argon 90%
      Middle Glass Pane:4 mm Planibel Clearlite / Thermally toughened glass
      Air Gap16 mm Argon 90%
      Bottom Glass Pane:Stratobel Clearlite 44.2 iplus 1.1 pos.5 / Laminated glass with Low-E coating EN 14449
      Spacer Type15mm Black Warm Edge
      U value0.9 [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 : SC0.66
      Selectivity1.26
      UV transmission : τuv [%]

      1 review for Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9

      1. Ethan Brown –

        Installed a 600 x 2500 bathroom skylight for a client in Coventry, and everything was trouble-free. I’m impressed with the efficient service and competitive prices of this company!

      Add a review

      Your email address will not be published. Required fields are marked *

      TECHNICAL GUIDE

      Step-by-Step Installation

      Ensure your project meets British Building Regulations with our verified fitting process

      01

      Structural Prep

      The upstand opening must allow for a 5mm tolerance on each side. The internal distance must be 10mm larger than the quoted size.

      02

      Support Timber

      Install 25x50mm timber support. Ensure the top of the support for triple glazed units is exactly 42mm below the upstand top.

      03

      Seal & Level

      Apply foam rope on the timber support to level discrepancies and prevent glass cracking. Failure to use foam rope voids your warranty.

      Pro Tip: Use DOWSIL 791 Weatherproofing Sealant. DO NOT use acrylic sealants as they cause loss of adhesion and leaks.
      Watch Installation Videos Download Full PDF Guide

      Transform your home with our triple-glazed flat roof skylights, maximizing natural light and thermal efficiency. Pair them with our separately sold Insulated Upstand, featuring 40mm core insulation to cut heat loss and lower energy costs.

      The Direct Advantage

      Elite glazing expertise and factory-backed support at every stage.

      ⚡

      Rapid Logistics

      Free UK shipping & next-day dispatch.

      🏭

      Manufacturer Direct

      Direct accountability & elite integrity.

      🛡️

      20-Year Security

      Structural warranty & secure checkout.

      🧰

      Technical Aftercare

      Dedicated support for every spec.

      Our Roof Windows in Action

      Photos from completed projects by our clients

      flat-roof-skylights-frameless-window-regal-glass-new-gallery-image.jpg
      frameless-fixed-skylight-triple-glazed-roof-window-regal-3.jpg
      frameless-fixed-skylight-triple-glazed-roof-window-regal2.jpg
      fixed-skylight-frameless-rooflight-roof-window-var2.jpg
      fixed-skylight-frameless-rooflight-roof-window-var9.jpg
      frameless-fixed-skylight-triple-glazed-roof-window-regal-glass.jpg
      frameless-fixed-skylight-triple-glazed-roof-window-regal4.jpg
      what-should-you-consider-when-choosing-a-skylight.jpg

      Why Choose Our Insulated OSB Upstands?

      osb-upstand-for-flat-roof-skylight-google-image-small-sizes.jpg
      transperant-view-OSB-upstand-for-flat-roof.jpg
      osb-upstand-for-flat-roof-skylight-google-image-big-sizes.jpg

      Perfect Pitch for Water Drainage

      Built-In 6° Pitch for perfect drainage

      Exceptional Insulation

      High Insulation with 40mm core and 15mm OSB

      Ready-to-Install, Precision-Cut Fit

      Factory-made to match our skylights exactly

      Brighten Your Home & Save More – Bundle & Save!

      Upgrade with our triple-glazed flat roof skylights for maximum light and energy efficiency.
      Add the Insulated Upstand and save up to 7% with our bundle offer!

      ✔️ Boost thermal performance
      ✔️ Cut energy costs
      ✔️ Enjoy lasting durability

      Get the complete solution at a better price – bundle today!

      Get a Bundle with extra 7% Discount on Skylight and Upstand

      -26% -21%
      modern flat roof roof window 600 x 2500 mm with extended glass line
      Quick view
      Add to wishlist

      Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9

      Original price was: £ 867.00.Current price is: £ 638.01. incl. VAT
      KingsView 600x2500mm Frameless Flat Roof Skylight – A sleek 0.6m x 2.5m Triple Glazed slimline unit designed for gallery-style kitchen extensions and corridors. Featuring an industry-leading 0.9 W/m²K U-Value, this architectural rooflight maximizes natural light while maintaining superior thermal insulation. Structural Strength & Safety: Built for long-span durability, our KingsView series is 100% leakproof and features Thermally Toughened & Laminated Safety Glass. At 77.4kg, this unit is engineered with a frameless edge-to-edge design to prevent the water pooling and sagging common in cheaper, thinner alternatives.
      • Internal Size: 600 x 2500 mm (0.6m x 2.5m)
      • Glazing Spec: Triple Glazed (with Stratobel Laminated Safety Glass)
      • Performance: 0.9 W/m²K U-Value & 39dB Sound Proofing
      • Maintenance: Sunlight-activated Self-Cleaning Glass technology
      • Compliance: UKCA Certified, 20-Year Warranty & Building Regs Compliant
      • Delivery: Specialist UK shipping direct from the manufacturer
      The ultimate slimline daylight solution for modern architecture. Engineered for high performance and a clean, minimalist "glass-to-sky" aesthetic.
      -23% -17%
      extra long upstand 600 x 2500 mm OSB insulated rooflight base
      Quick view
      Add to wishlist

      Inclined Insulated Upstand for Flat Roof Skylight 600 x 2500 mm

      ,
      Original price was: £ 346.72.Current price is: £ 268.70. incl. VAT
      • 15mm OSB
      • 40mm core cavity insulation
      • 6 degrees natural incline across the short side
      • Suitable for cold and warm roofs
      • Compatible with all roof coverings
      • Precision-engineered sizes
      • Available off the shelf
      Quick view
      Add to wishlist

      Installation kit for 1 x Flat Roof Skylight 600x2500mm

      £ 72.45 incl. VAT
      • Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml  - 3pcs
      • Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls) - 1pcs
      This kit is for one skylight window. With our all-in-one kit, you can save time and effort by not having to calculate which accessories and how many pieces you need for your installation. We recommend these products as fully compatible with our glazing unit, ensuring a secure and reliable installation.
        Original price was: £ 867.00.Current price is: £ 638.01. incl. VAT
        Original price was: £ 346.72.Current price is: £ 268.70. incl. VAT
        £ 72.45 incl. VAT
        Original price was: £ 1.282.72.Current price is: £ 975.71. incl. VAT
        For 3 items

        Why Choose Our Skylight Blinds?

        Smart Light Control for Every Room

        With blackout or translucent options

        Durable Design

        Lasting Quality with cellular fabric and Somfy motors

        Custom-Made

        Made to Measure for a seamless skylight finish

        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.

        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.

        Reviews

        1 review for Flat Roof Skylight 600 x 2500 mm – Fixed Frameless Triple Glazed – U-Value 0.9

        1. Ethan Brown –

          Installed a 600 x 2500 bathroom skylight for a client in Coventry, and everything was trouble-free. I’m impressed with the efficient service and competitive prices of this company!

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