800x2500mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView
Original price was: £ 954.00.£ 658.25Current price is: £ 658.25. incl. VAT
LIVE STATUS: 15 units remaining
KingsView 800x2500mm Frameless Flat Roof Skylight – A sleek 0.8m x 2.5m Triple Glazed linear unit designed for modern side-returns and kitchen extensions. Featuring an industry-leading 0.9 W/m²K U-Value, this architectural rooflight offers breathtaking panoramic views while maximizing energy efficiency.
Linear Engineering & Safety: Built for long-span durability, our KingsView series features Toughened & Laminated Safety Glass. At 100.5kg, this 100% leakproof unit is engineered to remain perfectly flat over its 2.5m length, preventing the sagging and water pooling common in lower-quality, thinner glass units.
- Internal Size: 800 x 2500 mm (0.8m x 2.5m)
- Glazing Spec: Triple Glazed (Thermally Toughened & Laminated)
- Thermal Performance: 0.9 W/m²K U-Value & 39dB Acoustic Insulation
- Self-Cleaning: Sunlight-activated Smart Glass technology
- Compliance: UKCA Certified, Building Regs Compliant & 20-Year Warranty
- Delivery: Fast UK shipping direct from our factory
The ultimate linear daylight solution for narrow spaces. Sleek, frameless design provides a contemporary “glass-to-sky” finish that floods your home with natural light.
15 in stock (can be backordered)
10 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
Considering adding a skylight but worried about heat loss? Our Flat Roof Skylight 800 x 2500 mm provides a remarkable U-value of 0.9 W/m²K, due to its triple-glazed units and warm edge spacer technology. This ensures excellent insulation, keeping your space warm in winter and cool in summer while flooding your room with natural light.
Why Choose Our Frameless Flat Roof Windows
- Energy Efficiency: Benefit from the exceptional flat roof with skylight thermal performance with triple-glazed units and warm edge spacer technology, achieving a U-value of 0.9 W/m²K for consistent comfort and lower energy bills.
- Unobstructed Views: The frameless design maximizes natural light and offers stunning panoramic sky views.
- Self-Cleaning Feature: Keep your glass effortlessly clean with a self-cleaning feature activated by sunlight.
- Versatile Installation: Suitable for flat roofs with pitches from 6° to 45°, fitting various home styles.
- Peaceful Ambiance: Effective soundproofing ensures a quieter indoor space.
- UV Protection: Protects against harmful UV rays.
- Safety First: Made with safety-toughened glass for enhanced security.
- Regulation Compliant: Meets British Standards & Building Regulations and carries the CE safety marking.
Essential Skylight Accessories
Enhance your skylight for flat roof experience with these essential accessories for smooth roof window installation and peak performance:
- Skylight Blinds for Flat Roof Window 800x2500mm: Custom-fit blinds provide light control and privacy, tailored to your skylight size.
- Installation Kit for 1 x Flat Roof Skylight 800x2500mm: Comprehensive kit 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: Restores 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 800 mm skylight (also known as 2.5 x 0.8 m roof light), as well as fully custom skylights tailored to your specific requirements. Our flat rooflights deliver exceptional thermal performance with innovative features like triple glazing, ensuring your space remains comfortable throughout the year. They also allow an abundance of natural light to enhance your room, creating a bright and inviting atmosphere. With sleek, modern designs, our flat rooflights add a touch of sophistication to any setting.
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 800 x 2500 mm Skylights Near Me
Looking for a 800 x 2500 mm roof light near you? Also known as a 0.8 x 2.5 m skylight, this size is perfect for long, narrow spaces—like kitchen extensions or side-return corridors. We produce frameless roof lights that add architectural elegance and day-long brightness.
✅ Elongated Format – Ideal for Linear Design Layouts
✅ Custom Sizes & Configurations Built In-House
✅ Next-Day UK Delivery on Select Models
✅ 20-Year Manufacturer Warranty
✅ Rated 5 Stars on Google
We ship nationwide, providing high-quality, UKCA-certified flat rooflights that balance beauty, build quality, and modern energy performance.
| Weight | 81 kg |
|---|---|
| Dimensions | 225 × 10 × 105 cm |
| Brand |
KingsView |
| Internal Size |
800 x 2500 mm |
| External Size |
1000 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 |
7 reviews for 800x2500mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView
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
800x2500mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView
- Internal Size: 800 x 2500 mm (0.8m x 2.5m)
- Glazing Spec: Triple Glazed (Thermally Toughened & Laminated)
- Thermal Performance: 0.9 W/m²K U-Value & 39dB Acoustic Insulation
- Self-Cleaning: Sunlight-activated Smart Glass technology
- Compliance: UKCA Certified, Building Regs Compliant & 20-Year Warranty
- Delivery: Fast UK shipping direct from our factory
Inclined Insulated Upstand for Flat Roof Skylight 800 x 2500 mm
Installation kit for 1 x Flat Roof Skylight 800x2500mm
- 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
7 reviews for 800x2500mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView
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Installing an 800 x 2500 mm skylight in our kitchen has been a game-changer. Skylights.co.uk really delivered on quality and design, making our cooking space brighter and more inviting.
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The 800 x 2500 mm skylight in our hallway has brightened up the entire house. Kings View Group offers fantastic products and service.
-
We noticed a big improvement in natural light. Great product!
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Here in Bristol, our flat roof skylight has totally transformed our living space. The quality is excellent, and it brings in tons of natural light.
-
This skylight is both practical and elegant.
-
Amazing clarity and high-quality glass. The best decision we made.
-
A modern and energy-efficient addition to our home.
James King –
Installing an 800 x 2500 mm skylight in our kitchen has been a game-changer. Skylights.co.uk really delivered on quality and design, making our cooking space brighter and more inviting.
Sophie Morgan –
The 800 x 2500 mm skylight in our hallway has brightened up the entire house. Kings View Group offers fantastic products and service.
Ella Winslow –
We noticed a big improvement in natural light. Great product!
Orla McGlinchey –
Here in Bristol, our flat roof skylight has totally transformed our living space. The quality is excellent, and it brings in tons of natural light.
Sebastian Montague –
This skylight is both practical and elegant.
Sophia Radcliffe –
Amazing clarity and high-quality glass. The best decision we made.
Daisy Langford –
A modern and energy-efficient addition to our home.