400x1500mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView
Original price was: £ 515.00.£ 369.42Current price is: £ 369.42. incl. VAT
LIVE STATUS: 18 units remaining
KingsView 400x1500mm Frameless Flat Roof Skylight – A premium 0.4m x 1.5m Triple Glazed slimline unit designed for corridors, walk-in wardrobes, and modern extensions. Featuring an industry-leading 0.9 W/m²K U-Value, this architectural “ribbon” skylight maximizes natural light while providing superior thermal insulation.
Safe & Leakproof Engineering: Part of our professional KingsView series, this 34kg unit is built with 6mm thermally toughened and 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: 400 x 1500 mm (0.4m x 1.5m)
- Glazing Spec: High-Performance Triple Glazed (Laminated Safety Glass)
- Thermal Performance: 0.9 W/m²K U-Value & 39dB Sound Reduction
- Maintenance: Sunlight-activated Self-Cleaning coating included
- Compliance: UKCA Certified, Building Regs Compliant & 20-Year Warranty
- Shipping: Fast UK delivery direct from the manufacturer
The ultimate slimline daylight solution for modern living. Designed for high performance, ease of installation, and a clean, minimalist architectural finish.
18 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
Are you thinking about installing a skylight but worried about heat loss? Our Flat Roof Skylight measuring 400 x 1500 mm offers:
- An impressive U-value of 0.9 W/m²K
- Triple-glazed units for superior insulation
- Warm edge spacer technology
This ensures your space stays warm in winter and cool in summer while letting in abundant natural light.
Why Choose Our Frameless Flat Roof Windows
- Energy Efficiency: Our triple-glazed units and warm edge spacer technology offer exceptional thermal performance, resulting in a U-value of 0.9 W/m²K for consistent comfort and reduced energy expenses.
- Unobstructed Views: The frameless design maximizes natural light penetration and offers stunning panoramic sky views.
- Self-Cleaning Feature: Enjoy easy maintenance with a sunlight-activated self-cleaning feature that keeps your glass sparkling clean.
- Versatile Installation: It is ideal for flat roofs with pitches between 6° and 45° and fits various home styles.
- Quiet Ambiance: Effective soundproofing ensures a peaceful indoor environment.
- UV Protection: Safeguards your interior from harmful UV rays.
- Safety First: Constructed 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
Upgrade your flat roof skylight setup with essential accessories for smooth skylight installation and optimal performance:
- Skylight Blinds for Flat Roof Window 400x1500mm: Custom-fit blinds provide light control and privacy, tailored specifically for your skylight size.
- Installation Kit for 1 x Flat Roof Skylight 400x1500mm: This comprehensive kit ensures optimal performance and durability through secure and hassle-free installation.
- Foam Rope—Structural Glazing Tape—9mm Thick (7.5m Rolls): This product offers effective sealing and structural support during installation.
- Weatherproofing Sealant (Silicon)—DOWSIL™ 791, 310ml: This product creates a durable, weatherproof seal around your skylight, keeping the elements out.
- Self-Cleaning Liquid Smart Glass Bottle 15ml: This product 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 1500 x 400 mm skylight (also known as 1.5 x 0.4 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 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 400 x 1500 mm Roof Lights Near Me
Looking for a 400 x 1500 mm flat roof light near you? Also known as a 0.4 x 1.5 m rooflight, this sleek, narrow format is perfect for slim corridors, internal bathrooms, or where vertical daylight detail makes an impact. We build frameless rooflights for tight spaces that still demand performance.
✅ Slimline Rooflight – For Light in Hard-to-Reach Spaces
✅ UKCA Certified – Built for Safety and Efficiency
✅ Custom Sizing Available for Unique Projects
✅ Fast, Nationwide Delivery
✅ 20-Year Structural Warranty
Ideal for both renovations and new builds, this size offers the perfect mix of subtlety and illumination—without compromising quality.
| Weight | 108 kg |
|---|---|
| Dimensions | 205 × 10 × 145 cm |
| Brand |
KingsView |
| Internal Size |
400 x 1500 mm |
| External Size |
600 x 1700 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: |
6 mm iplus 1.1 pos.5 Thermally toughened glass with Low-E coating EN 12150 |
| Air Gap |
16 mm Argon 90% |
| Bottom Glass Pane: |
Stratobel Clearlite 44.2 / Laminated glass |
| 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 |
9 reviews for 400x1500mm 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
400x1500mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView
- Internal Size: 400 x 1500 mm (0.4m x 1.5m)
- Glazing Spec: High-Performance Triple Glazed (Laminated Safety Glass)
- Thermal Performance: 0.9 W/m²K U-Value & 39dB Sound Reduction
- Maintenance: Sunlight-activated Self-Cleaning coating included
- Compliance: UKCA Certified, Building Regs Compliant & 20-Year Warranty
- Shipping: Fast UK delivery direct from the manufacturer
Inclined Insulated Upstand for Flat Roof Skylight 400 x 1500 mm
Installation kit for 1 x Flat Roof Skylight 400x1500mm
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml - 2pcs
- 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
9 reviews for 400x1500mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView
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The bespoke skylight for our staircase from KingsView, is simply breathtaking. Highly recommend! Plus London delivery was express!
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The light that floods in through our roof window has made our staircase a centerpiece in the home. Exceptional product!
-
The skylight in our small kitchen has made all the difference. It’s incredible how it opens up the space. Kudos to Skylights.co.uk for their excellent work in Liverpool!
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The bespoke skylight we got for our bedroom has exceeded all our expectations. The quality and service from KINGSVIEW Group are outstanding.
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I never imagined how much a kitchen skylight could change our home’s ambiance. The folks at Skylights.co.uk were incredibly helpful in guiding us through the process.
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Our kitchen feels completely transformed with the skylight. It was delivered in no time, and the installation was a breeze thanks to the helpful support team.
-
Our flat roof windows arrived quicker than expected, and they’ve made such a difference in our loft. The natural light is fantastic.
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The skylight arrived faster than expected, and it’s made a huge difference in the amount of light in our living room. Great quality product and super helpful support.
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Super fast delivery and clear instructions for setup.
Benjamin Stewart –
The bespoke skylight for our staircase from KingsView, is simply breathtaking. Highly recommend! Plus London delivery was express!
Adam Turner –
The light that floods in through our roof window has made our staircase a centerpiece in the home. Exceptional product!
Amelia wilson –
The skylight in our small kitchen has made all the difference. It’s incredible how it opens up the space. Kudos to Skylights.co.uk for their excellent work in Liverpool!
Noah Brown –
The bespoke skylight we got for our bedroom has exceeded all our expectations. The quality and service from KINGSVIEW Group are outstanding.
Rory Carter –
I never imagined how much a kitchen skylight could change our home’s ambiance. The folks at Skylights.co.uk were incredibly helpful in guiding us through the process.
Hannah Fraser –
Our kitchen feels completely transformed with the skylight. It was delivered in no time, and the installation was a breeze thanks to the helpful support team.
Tomás Doyle –
Our flat roof windows arrived quicker than expected, and they’ve made such a difference in our loft. The natural light is fantastic.
Daniel Shaw –
The skylight arrived faster than expected, and it’s made a huge difference in the amount of light in our living room. Great quality product and super helpful support.
Sheila Harris –
Super fast delivery and clear instructions for setup.