KingsView 400x400mm Rooflight | Flat Roof Skylight | Frameless Triple Glazed | 0.9 U-Value
Original price was: £ 274.00.£ 129.00Current price is: £ 129.00. incl. VAT
LIVE STATUS: BACKORDER units remaining
KingsView 400x400mm Frameless Flat Roof Skylight – A premium 0.4m x 0.4m Triple Glazed unit designed to brighten utility rooms, en-suites, and landings. Featuring an industry-leading 0.9 W/m²K U-Value, this compact architectural rooflight provides maximum thermal efficiency and a 100% leakproof seal.
Safe & Durable Engineering: Part of our professional KingsView series, this unit is built with 6mm thermally toughened and laminated safety glass. Unlike cheaper alternatives, our reinforced design prevents water pooling and ensures lasting structural integrity for any flat roof project.
- Internal Size: 400 x 400 mm (0.4m x 0.4m)
- Glazing Spec: High-Performance Triple Glazed (Laminated Safety Glass)
- Performance: 0.9 W/m²K U-Value & 39dB Sound Reduction
- Maintenance: Sunlight-activated Self-Cleaning coating included
- Compliance: Full UKCA Certification & Building Regs Compliant
- Delivery: Next-day UK shipping available from the manufacturer
The perfect compact daylight solution for modern homes. Sleek, energy-efficient, and designed for easy installation with a 20-year manufacturer warranty.
Available on backorder
6 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 of adding a skylight but worried about heat loss? Our Flat Roof Skylight, measuring 400 x 400 mm, boasts an impressive U-value of 0.9 W/m²K, thanks to its triple-glazed units and warm edge spacer technology. This means superior insulation, keeping your space cosy in winter and pleasantly cool in summer while enjoying abundant natural light!
Why Choose Our Frameless Flat Roof Windows
- Energy Efficiency: Triple-glazed units and warm edge spacer technology offer outstanding thermal performance. With a U-value of 0.9 W/m²K, your space remains comfortable year-round, reducing energy bills.
- Unobstructed Views: The frameless design maximizes natural light, offering breathtaking panoramic sky views.
- Self-Cleaning Convenience: Maintenance is effortless with a sunlight-activated self-cleaning feature that keeps the glass spotless.
- Versatile Installation: It is suitable for flat roofs with pitches between 6° and 45°, making it an excellent 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
Enhance your flat roof skylight experience with these essential add-ons for a seamless skylight installation and optimal performance:
- Installation Kit for 1 x Flat Roof Skylight 400x400mm: This complete kit provides everything needed for a secure and stress-free installation, ensuring optimal performance and lasting enjoyment of your skylight.
- Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls): This high-quality tape offers effective sealing and crucial support during installation for a secure fit.
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml: This durable sealant creates a watertight seal around your skylight, keeping the elements out and ensuring a comfortable indoor environment.
- Self-Cleaning Liquid Smart Glass Bottle 15ml: This special solution replenishes the skylight’s self-cleaning properties, ensuring effortless maintenance and sparkling glass with minimal effort.
Choose Skylights.co.uk
We offer a variety of standard sizes readily available for purchase, along with custom skylights to suit your specific needs.
No matter the project, our flat roof lights 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 skylights, creating a brighter and more inviting atmosphere.
- Elegant Design: Add a touch of sophistication to any setting with our sleek and modern flat roof lights.
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 400 x 400 mm Flat Roof Skylights Near Me
Looking for a 400 x 400 mm flat skylight near you? Also known as a 0.4 x 0.4 m roof light, this size is a great fit for compact spaces where natural light can make a big difference—like utility rooms, landings, or en-suite bathrooms. We build high-performance flat roof lights that combine clean, modern design with lasting durability.
✅ 20-Year Warranty Included
✅ Installer Support Available
✅ Rated 5 Stars on Google
✅ Secure Checkout & Payment Options
✅ Custom Sizes Available
Every skylight is UKCA-certified, weather-tested, and manufactured to meet strict quality standards. We offer fast nationwide delivery, so wherever you are, you can count on us for reliable, professional-grade roof lights that brighten your project and stand the test of time.
| Weight | 10.2 kg |
|---|---|
| Dimensions | 65.0 × 10.0 × 65.0 cm |
| Brand |
KingsView |
| Internal Size |
400 x 400 mm |
| External Size |
600 x 600 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 |
| Label |
Clearance |
7 reviews for KingsView 400x400mm Rooflight | Flat Roof Skylight | Frameless Triple Glazed | 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
KingsView 400x400mm Rooflight | Flat Roof Skylight | Frameless Triple Glazed | 0.9 U-Value
- Internal Size: 400 x 400 mm (0.4m x 0.4m)
- Glazing Spec: High-Performance Triple Glazed (Laminated Safety Glass)
- Performance: 0.9 W/m²K U-Value & 39dB Sound Reduction
- Maintenance: Sunlight-activated Self-Cleaning coating included
- Compliance: Full UKCA Certification & Building Regs Compliant
- Delivery: Next-day UK shipping available from the manufacturer
Inclined Insulated Upstand for Flat Roof Skylight 400 x 400 mm
Installation kit for 1 x Flat Roof Skylight 400x400mm
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml - 1pcs
- 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 KingsView 400x400mm Rooflight | Flat Roof Skylight | Frameless Triple Glazed | 0.9 U-Value
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We chose a 400 x 400 mm skylight for our small bathroom, and it’s our best decision. The natural light it lets in makes the space feel so much larger and more welcoming. Kings View Group’s quality is superb!
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The skylight was easy to install.
-
Bought a skylight for my client’s kitchen. Good quality and easy to install.
-
Happy with the skylight in our kitchen. It’s bright and functional.
-
Living in Liverpool, we love how the flat roof skylight has brought natural light into our kitchen. It’s well-made and really enhances the space.
-
The flat roof skylight has made such a difference in our Manchester home. It brings in so much light and looks great in our modern extension.
-
We’re really impressed with the quality of the skylight. It makes the entire room feel brighter and more spacious. Quick delivery and great technical support!
Isabella Evans –
We chose a 400 x 400 mm skylight for our small bathroom, and it’s our best decision. The natural light it lets in makes the space feel so much larger and more welcoming. Kings View Group’s quality is superb!
Daniel Fisher –
The skylight was easy to install.
Peter Armstrong –
Bought a skylight for my client’s kitchen. Good quality and easy to install.
James Brooks –
Happy with the skylight in our kitchen. It’s bright and functional.
Sarah McAllister –
Living in Liverpool, we love how the flat roof skylight has brought natural light into our kitchen. It’s well-made and really enhances the space.
Cameron Fraser –
The flat roof skylight has made such a difference in our Manchester home. It brings in so much light and looks great in our modern extension.
Thomas Webb –
We’re really impressed with the quality of the skylight. It makes the entire room feel brighter and more spacious. Quick delivery and great technical support!