800x1800mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView
£ 660.00 Original price was: £ 660.00.£ 495.90Current price is: £ 495.90. incl. VAT
LIVE STATUS: 18 units remaining
KingsView 800x1800mm Frameless Flat Roof Skylight – A premium 0.8m x 1.8m Triple Glazed unit engineered for maximum natural light and superior thermal insulation. With an industry-leading 0.9 W/m²K U-Value, this architectural rooflight keeps your extension warm in winter and cool in summer.
Safety & Leakproof Design: Part of our 100% leakproof series, this 73.2kg unit features Thermally Toughened & Laminated Safety Glass. The sleek frameless design ensures a seamless “glass-to-sky” view while preventing the water pooling and sagging common in lower-quality, thinner glass units.
- Internal Size: 800 x 1800 mm (0.8m x 1.8m)
- Glazing Spec: Triple Glazed (with Stratobel Laminated Safety Glass)
- Performance: 0.9 W/m²K U-Value & 39dB Sound Reduction
- Maintenance: Sunlight-activated Self-Cleaning coating included
- Certification: Full UKCA Certified & Building Regs Compliant
- Warranty: 20-Year Manufacturer Warranty
The ultimate modern daylight solution for residential extensions. Direct-from-manufacturer pricing with fast UK delivery and expert technical support.
18 in stock (can be backordered)
5 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 of adding a skylight but worried about heat loss? Our Flat Roof Skylight 800 x 1800 mm boasts an impressive U-value of 0.9 W/m²K, thanks to its triple-glazed units and warm edge spacer technology. That means superior insulation, keeping your space cozy in winter and pleasantly cool in summer – all while enjoying tons of natural light!
Why Choose Our Frameless Flat Roof Windows
- Energy Efficiency: Enjoy outstanding thermal performance with triple-glazed units and warm edge spacer technology. This translates to a U-value of 0.9 W/m²K, keeping your space comfortable year-round and reducing energy bills.
- Unobstructed Views: The frameless design maximizes natural light penetration, offering breathtaking panoramic views of the sky.
- Self-Cleaning Convenience: Effortless maintenance with a sunlight-activated self-cleaning feature that keeps the glass spotless.
- Versatile Installation: Suitable for flat roofs with pitches between 6° and 45°, making it a great fit for many homes.
- Peaceful Ambiance: Provides effective soundproofing for a quieter indoor environment.
- Sun Safety: Offers protection against harmful UV rays.
- Safety First: Constructed with safety-toughened glass for ultimate 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 roof window installation and optimal performance:
- Inclined Insulated Upstand for Flat Roof Skylight 800 x 1800 mm: Our Inclined Insulated Upstands take the hassle out of installing your flat roof skylight. These pre-built wonders are crafted with thin wood veneers bonded with strong adhesives. A unique layering technique ensures exceptional structural integrity, so you won’t have to worry about warping or sagging over time.
- Skylight Blinds for Flat Roof Window 800 x 1800 mm: The power to control the light and privacy in your space! Designed specifically for your skylight size, these blinds offer a perfect fit and allow you to create the ideal atmosphere in your home.
- Installation Kit for 1 x Flat Roof Skylight 800 x 1800 mm: Everything you need for a secure and stress-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): Double threat during installation. This high-quality tape provides both effective sealing to keep the elements at bay and crucial support for a secure fit.
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml: The key to 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 replenishes 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 1800 x 800 mm skylight (also known as 1.8 x 0.8 m roof light), as well as fully custom skylights to suit your specific needs. No matter the project, our flat rooflights provide:
- Exceptional Thermal Performance: Enjoy outstanding energy efficiency thanks to innovative features like triple glazing, keeping your space comfortable year-round.
- Natural Light Abundance: Bathe your space in beautiful natural light with our roof windows and skylights, creating a brighter and more inviting atmosphere.
- Elegant Design: Add a touch of sophistication to any setting with our sleek and modern glass skylights for flat roofs.
Download our full product catalogue to explore our extensive roof skylights for flat roofs range and find the perfect solution for your project.
Ready to discuss your skylight needs? Contact us today!
🗺️ Where to Buy 800 x 1800 mm Roof Lights Near Me
Looking for 800 x 1800 mm roof lights near you? Also known as a 0.8 x 1.8 m skylight, this large-format option is ideal for open-plan kitchens, dining areas, and home extensions. We craft frameless flat rooflights designed for performance, longevity, and a clean architectural finish.
✅ Large Skylight – Designed for Impact & Daylight Spread
✅ Installer Support Available
✅ UKCA Certified for Full Building Compliance
✅ Rated 5 Stars on Google
✅ 20-Year Warranty Included
With fast UK-wide delivery and precision manufacturing, our skylights are trusted by professionals for projects that demand style and substance.
| Weight | 73.20 kg |
|---|---|
| Dimensions | 205 × 10 × 105 cm |
| Brand |
KingsView |
| Internal Size |
800 x 1800 mm |
| External Size |
1000 x 2000 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 |
1 review for 800x1800mm 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
800x1800mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView
- Internal Size: 800 x 1800 mm (0.8m x 1.8m)
- Glazing Spec: Triple Glazed (with Stratobel Laminated Safety Glass)
- Performance: 0.9 W/m²K U-Value & 39dB Sound Reduction
- Maintenance: Sunlight-activated Self-Cleaning coating included
- Certification: Full UKCA Certified & Building Regs Compliant
- Warranty: 20-Year Manufacturer Warranty
Inclined Insulated Upstand for Flat Roof Skylight 800 x 1800 mm
Installation kit for 1 x Flat Roof Skylight 800x1800mm
-
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml - 3pcs
- 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
1 review for 800x1800mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView
-
Grace Cook –
Rated 5 out of 5I spent so much time looking for a frameless skylight in Glasgow. Then I found skylights.co.uk and ordered the 800 x 1800 flat roof skylight. Guess what? It has elevated the entire feel of my room. Very grateful to you guys!







Grace Cook –
I spent so much time looking for a frameless skylight in Glasgow. Then I found skylights.co.uk and ordered the 800 x 1800 flat roof skylight. Guess what? It has elevated the entire feel of my room. Very grateful to you guys!