1000x2500mm Extra Large Skylight – Frameless Triple Glazed Flat Rooflight – 0.9 U-Value
Original price was: £ 1.209.00.£ 865.90Current price is: £ 865.90. incl. VAT
LIVE STATUS: 21 units remaining
KingsView 1000x2500mm Frameless Flat Roof Skylight – Our premier 1m x 2.5m Triple Glazed panoramic unit, designed for luxury open-plan extensions. Achieve an incredible 0.9 W/m²K U-Value with this high-performance architectural rooflight, combining massive natural light intake with superior heat retention.
Maximum Structural Safety: Supporting a net weight of 123.6kg, our KingsView series uses reinforced 6mm toughened and laminated safety glass. Unlike standard thin-glass units that sag over a 2.5m span, our engineering prevents water pooling and ensures a 100% leakproof, lifelong seal.
- Internal Size: 1000 x 2500 mm (1m x 2.5m)
- Glass Spec: High-Impact Triple Glazed (Laminated Safety Glass)
- Thermal Performance: 0.9 W/m²K U-Value & 39dB Acoustic Insulation
- Maintenance: Sunlight-activated Self-Cleaning Glass technology
- Peace of Mind: 20-Year Warranty & Full UKCA Certification
- Logistics: Specialist UK delivery from a trusted manufacturer
The ultimate wide-format solution for vaulted ceilings and modern builds. Engineered for the British climate and fully compliant with UK Building Regulations.
21 in stock (can be backordered)
7 in stock (can be backordered)
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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
Firstly, we have our own fleet of delivery vehicles and friendly, helpful drivers who are committed to getting your skylights to you in perfect condition. We can deliver your order directly to your home or business at a time that suits you. Our drivers will carefully unload your order and even help you move it to the desired location. Alternatively, we also offer TPN Connect delivery services. TPN Connect is a trusted delivery network that specializes in handling fragile and delicate items, like skylights. They work with reputable courier services to ensure that your order is delivered safely and securely to your door. When you place your order with us, you’ll have the option to choose the delivery method that works best for you.
Delivery Options
Standard Delivery
Get it in 3-6 working days
All orders within London M25. We deliver Monday to Friday between 8am-5pm.
Next Day
Delivery
The orders received until 12:00pm can be delivered on next working day. There is an additional charge.
Local Pickup
From Our Warehouse
You can pick it from our warehouse on this specific time: Monday to Friday between 8am-5pm.
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.
Flat Roof
Frameless Triple Glazed
Skylights In Stock
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 1000 x 2500 mm provides an outstanding U-value of 0.9 W/m²K, thanks to its triple-glazed units and warm edge spacer technology. This ensures excellent insulation, keeping your space warm in winter and cool in summer – all while allowing in an abundance of natural light!
Why Choose Our Frameless Flat Roof Windows
- Energy Efficiency: Benefit from excellent thermal performance with our triple-glazed units and warm edge spacer technology. This combination results in a U-value of 0.9 W/m²K, ensuring comfort throughout the year and reducing energy costs.
- Unobstructed Views: The frameless design maximizes natural light penetration, offering stunning panoramic views of the sky.
- Self-Cleaning Convenience: Enjoy low-maintenance living with a sunlight-activated self-cleaning feature that keeps your glass spotless.
- Versatile Installation: Suitable for flat roofs with pitches ranging from 6° to 45°, making it adaptable for various home styles.
- Peaceful Ambiance: Provides effective soundproofing for a quieter indoor environment.
- Sun Safety: Protects against harmful UV rays.
- Safety First: Made with safety-toughened glass for your peace of mind.
- Regulation Compliant: Meets all British Standards & Building Regulations and carries the CE safety marking.
Essential Skylight Accessories
Enhance your flat roof skylight experience with these must-have accessories for seamless roof window installation and optimal performance:
- Skylight Blinds for Flat Roof Window 1000x2500mm: Control light and privacy in your space! These blinds are designed specifically for your skylight size, offering a perfect fit and allowing you to create the ideal atmosphere in your home.
- Installation Kit for 1 x Flat Roof Skylight 1000x2500mm: Everything you need for a secure and hassle-free installation. This complete kit takes the guesswork out of the process, ensuring your skylight is properly installed for optimal performance and lasting enjoyment.
- Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls): Dual-purpose during installation. This high-quality tape provides effective sealing to keep the elements out and crucial support for a secure fit.
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml: Essential for a watertight seal around your skylight. This durable sealant 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 restores the self-cleaning properties of your skylight, ensuring effortless maintenance and sparkling glass with minimal effort on your part.
Choose Skylights.co.uk
We offer an extensive range of standard sizes, including the popular 2500 x 1000 mm skylight (also known as 2.5 x 1 m roof light), as well as fully custom skylights tailored to your specific needs. No matter the project, our flat rooflights provide:
- Natural Light Abundance: Our skylights fill your space with beautiful natural light, creating a brighter and more inviting atmosphere.
- Elegant Design: Enhance any setting with the sleek, modern design of our flat rooflights.
- Exceptional Thermal Performance: With innovative features like triple glazing, your space remains comfortable year-round.
Download our full product catalogue to explore our extensive Flat Roof skylight range and find the perfect solution for your project.
Ready to discuss your skylight needs? Contact us today!
🗺️ Where to Buy 1000 x 2500 mm Roof Lights Near Me
Looking for 1000 x 2500 mm roof light near you? Also known as a 1 x 2.5 m large skylight, this wide-format option is designed to transform open-plan areas, vaulted ceilings, and luxury extensions. We engineer frameless flat rooflights that offer breathtaking views, lasting durability, and smooth thermal performance.
✅ Large Skylight – Ideal for Open Living Spaces
✅ 20-Year Warranty – No Hidden Charges
✅ Installer Support Available by Phone or Email
✅ Trusted by UK Builders & Designers
✅ Custom Sizes Built to Specification
Manufactured with UKCA-certified materials and shipped nationwide, this skylight makes a bold architectural statement while enhancing energy efficiency.
| Weight | 123.60 kg |
|---|---|
| Dimensions | 275 × 10 × 125 cm |
| Brand |
KingsView |
| Internal Size |
1000 x 2500 mm |
| External Size |
1200 x 2700 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 |
10 reviews for 1000x2500mm Extra Large Skylight – Frameless Triple Glazed Flat Rooflight – 0.9 U-Value
Step-by-Step Installation
Ensure your project meets British Building Regulations with our verified fitting process[cite: 1, 4].
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[cite: 40].
Support Timber
Install 25x50mm timber support[cite: 49]. Ensure the top of the support for triple glazed units is exactly 42mm below the upstand top.
Seal & Level
Apply foam rope on the timber support to level discrepancies and prevent glass cracking[cite: 69]. Failure to use foam rope voids your warranty[cite: 70, 83].
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
Why Choose Our Insulated OSB Upstands?
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
1000x2500mm Extra Large Skylight – Frameless Triple Glazed Flat Rooflight – 0.9 U-Value
- Internal Size: 1000 x 2500 mm (1m x 2.5m)
- Glass Spec: High-Impact Triple Glazed (Laminated Safety Glass)
- Thermal Performance: 0.9 W/m²K U-Value & 39dB Acoustic Insulation
- Maintenance: Sunlight-activated Self-Cleaning Glass technology
- Peace of Mind: 20-Year Warranty & Full UKCA Certification
- Logistics: Specialist UK delivery from a trusted manufacturer
Inclined Insulated Upstand for Flat Roof Skylight 1000 x 2500 mm
Installation kit for 1 x Flat Roof Skylight 1000x2500mm
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml - 4pcs
- Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls) - 1pcs
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
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.
Yes. All our skylights come with self-cleaning glass as standard to reduce dirt buildup.
Yes. We offer made-to-measure rooflights to fit your exact requirements. Contact us for a custom quote.
Yes. When installed with our official flashing kit and according to instructions, it is guaranteed to be watertight.
Absolutely. Each unit uses toughened outer and laminated inner glass that complies with UK safety standards (EN12150 / EN14449).
We offer a 20-year guarantee on the glazing unit.
Reviews
10 reviews for 1000x2500mm Extra Large Skylight – Frameless Triple Glazed Flat Rooflight – 0.9 U-Value
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We decided to go with a large 1000 x 2500 mm roof light for our loft conversion, and we couldn’t be happier. The space looks much more bright and elegant now. We live in London and got it on the next day, which was also great!
-
The frameless roof light in the bathroom looks stylish and brings in a wonderful natural light.
-
We’re thrilled with our 1000 x 2500 mm skylight. It’s not just a window to the sky; it’s a feature that enhances our entire home’s design.
-
Our 1000 x 2500 staircase skylight from Skylights.co.uk has added a new layer of elegance and brightness to our home.
-
The large skylight we installed above our staircase is a masterpiece. It’s amazing how it transforms a usually neglected space.
-
The flat roof skylight we installed in our Belfast home has been amazing. It brightens up the entire kitchen, and the quality is outstanding.
-
The frameless roof windows in the living room make the space feel open and stylish.
-
Flat roof windows in our kitchen make the entire house feel bright and welcoming.
-
Our fixed roof window in the bedroom brings in the perfect amount of light. Very happy!
-
Excellent insulation and elegant appearance. Worth the price.
Ava Taylor –
We decided to go with a large 1000 x 2500 mm roof light for our loft conversion, and we couldn’t be happier. The space looks much more bright and elegant now. We live in London and got it on the next day, which was also great!
Magda Fabry –
The frameless roof light in the bathroom looks stylish and brings in a wonderful natural light.
Grace Johnson –
We’re thrilled with our 1000 x 2500 mm skylight. It’s not just a window to the sky; it’s a feature that enhances our entire home’s design.
Evie Perry –
Our 1000 x 2500 staircase skylight from Skylights.co.uk has added a new layer of elegance and brightness to our home.
Charlotte Wilson –
The large skylight we installed above our staircase is a masterpiece. It’s amazing how it transforms a usually neglected space.
Patrick McFadden –
The flat roof skylight we installed in our Belfast home has been amazing. It brightens up the entire kitchen, and the quality is outstanding.
Peter Kuruc –
The frameless roof windows in the living room make the space feel open and stylish.
Patrik Sabol –
Flat roof windows in our kitchen make the entire house feel bright and welcoming.
Iveta Bartosova –
Our fixed roof window in the bedroom brings in the perfect amount of light. Very happy!
Cathy McGuire –
Excellent insulation and elegant appearance. Worth the price.