400x1500mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView
400x1500mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView Original price was: £ 515.00.Current price is: £ 369.42. incl. VAT
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400x3000mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView
400x3000mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView Original price was: £ 1.000.00.Current price is: £ 519.00. incl. VAT

400x2000mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView

(6 customer reviews)

Original price was: £ 657.00.Current price is: £ 432.40. incl. VAT

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LIVE STATUS: 15 units remaining

KingsView 400x2000mm Frameless Flat Roof Skylight – A premium 0.4m x 2m Triple Glazed slimline unit, perfect for side-return extensions and modern corridors. Featuring an industry-leading 0.9 W/m²K U-Value, this architectural “strip” skylight floods narrow spaces with natural light while providing maximum thermal insulation.

Slimline Engineering & Safety: Part of our 100% leakproof series, this 45kg unit is built with Thermally Toughened & Laminated Safety Glass. The frameless edge-to-edge 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 2000 mm (0.4m x 2m)
  • 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
  • Compliance: UKCA Certified, Building Regs Compliant & 20-Year Warranty
  • Delivery: Fast UK shipping direct from the manufacturer

The ultimate modern daylight solution for linear spaces. Designed for high performance, ease of installation, and a clean, minimalist architectural finish.

CE & ISO CERTIFIED
Precision Fit: 10-year leak-proof warranty included.
Transit-Safe: Arrived damaged? We swap it in 24h.

15 in stock (can be backordered)

Inclined Insulated Upstand for Flat Roof Skylight 400 x 2000 mm
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Original price was: £ 268.43.Current price is: £ 223.69. incl. VAT
400x2000mm Electric Rooflight Blind | Flat Roof Skylight Shade | KingsView - Translucent, Hardwired
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Original price was: £ 750.75.Current price is: £ 644.74. incl. VAT
Installation kit for 1 x Flat Roof Skylight 400x2000mm
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£ 72.45 incl. VAT
Foam Rope - Structural Glazing Tape – 9mm Thick (7.5m Rolls)
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£ 24.00 incl. VAT
Weatherproofing Sealant (Silicon) - DOWSIL™ 791, 310ml
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£ 16.15 incl. VAT
Self-Cleaning Liquid Smart Glass Bottle 15ml
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£ 30.00 incl. VAT
Estimated delivery: 17th Mar – 23rd Mar
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ACTIVE PROMOTION

Use Code: TODAYONLY

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

How it Works?

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. 
skylights-co-uk-logo-final

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 installing a skylight but worried about heat loss? Our Flat Roof Skylight 400 x 2000 mm offers:

  • An excellent U-value of 0.9 W/m²K
  • Triple-glazed units for optimal insulation
  • Warm edge spacer technology
    This ensures your space stays warm in winter, cool in summer, and filled with natural light.

Why Choose Our Frameless Flat Roof Windows

  • Energy Efficiency: Achieve outstanding thermal performance with triple-glazed units and warm edge spacer technology, providing a U-value of 0.9 W/m²K for year-round comfort and lower energy bills.
  • Unobstructed Views: The frameless design maximizes natural light and offers breathtaking panoramic sky views.
  • Self-Cleaning Feature: Keep your glass effortlessly clean with a sunlight-activated self-cleaning feature.
  • Versatile Installation: It is suitable for flat roofs with pitches between 6° and 45° and fits a variety of home styles.
  • Quiet Ambiance: Effective soundproofing ensures a peaceful indoor environment.
  • UV Protection: Shields your interior from harmful UV rays.
  • Safety First: Constructed with safety-toughened glass for enhanced security.
  • Regulation Compliant: Meets all British Standards & Building Regulations and carries the CE safety marking.

Essential Skylight Accessories

Enhance your flat roof skylight with these must-have accessories for seamless roof window installation and peak performance:

  • Skylight Blinds for Flat Roof Window 400x2000mm: Custom-fit blinds provide light control and privacy, tailored specifically for your skylight size.
  • Installation Kit for 1 x Flat Roof Skylight 400x2000mm: This comprehensive kit ensures optimal performance and durability through secure, hassle-free installation.
  • Foam Rope—structural Glazing Tape—9mm Thick (7.5m Rolls): This provides 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 2000 x 400 mm skylight (also known as 2 x 0.4 m roof light), as well as fully custom skylights to suit your specific needs. Whether you’re enhancing a residential space or illuminating a commercial property, our flat rooflights deliver exceptional thermal performance, natural light, and elegance. Download our full product catalogue for more details.

Whether you’re seeking to enhance a residential space or illuminate a commercial property, our flat rooflights are designed to deliver exceptional thermal performance, natural light, and a touch of elegance to any setting. Explore our extensive skylight range to find the perfect solution for your project.

Contact us today to discuss your skylight project!

🗺️ Where to Buy 400 x 2000 mm Roof Lights Near Me

Looking for a 400 x 2000 mm roof light near you? Also referred to as a 0.4 x 2 m skylight, this long, narrow format is ideal for walkways, lofts, and side return extensions where vertical daylight is key. We craft frameless flat rooflights designed to deliver light where conventional windows can’t.

Slimline Skylight – Perfect for Side Returns & Hallways
Custom Lengths Available to Fit Your Layout
Thermally Efficient Triple Glazing
Rated 5 Stars on Google
UKCA Certified & Fully Compliant

Precision-engineered and delivered direct from our UK facility, this skylight adds drama, daylight, and design value—without taking over your space.

Weight108 kg
Dimensions205 × 10 × 145 cm
BrandKingsView
Internal Size400 x 2000 mm
External Size600 x 2200 mm
Glazing Type
Glass Tint
Self-Cleaning:Yes
Roof TypeFlat Roof, Pitched Roof
Skylight TypeFrameless
Top Glass Pane:6 mm Planibel Clearlite / Thermally toughened glass EN 12150
Air Gap16 mm Argon 90%
Middle Glass Pane:4 mm Planibel Clearlite / Thermally toughened glass
Air Gap16 mm Argon 90%
Bottom Glass Pane:Stratobel Clearlite 44.2 iplus 1.1 pos.5 / Laminated glass with Low-E coating EN 14449
Spacer Type15mm Black Warm Edge
U value0.9 [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 : SC0.66
Selectivity1.26
UV transmission : τuv [%]

6 reviews for 400x2000mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView

  1. Jack Jones

    The attic skylight I got from Skylights.co.uk has been a game-changer. The difference in natural light in my loft is astonishing. Their roof windows are definitely the best on the market.

  2. Sebastian Collins:

    Our staircase area has been beautifully illuminated by a frameless skylight, making every ascent feel special.

  3. Sophia Patel

    Our new skylight has brightened up our kitchen beautifully. Cooking under natural light has never been more enjoyable.

  4. George Wilson

    Our new loft skylight has completely transformed our attic. It’s now our favorite room in the house, all thanks to the beautiful natural light!

  5. Lily Alexander

    Our staircase skylight has turned a previously unnoticed area into our most welcoming space in the house.

  6. Emma Cooper

    I am very happy with the flat roof windows. The quality is premium and the customer service very attentive.

Add a review

Your email address will not be published. Required fields are marked *

TECHNICAL GUIDE

Step-by-Step Installation

Ensure your project meets British Building Regulations with our verified fitting process

01

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.

02

Support Timber

Install 25x50mm timber support. Ensure the top of the support for triple glazed units is exactly 42mm below the upstand top.

03

Seal & Level

Apply foam rope on the timber support to level discrepancies and prevent glass cracking. Failure to use foam rope voids your warranty.

Pro Tip: Use DOWSIL 791 Weatherproofing Sealant. DO NOT use acrylic sealants as they cause loss of adhesion and leaks.

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

Original price was: £ 657.00.Current price is: £ 402.13. incl. VAT
Original price was: £ 268.43.Current price is: £ 208.03. incl. VAT
£ 72.45 incl. VAT
Original price was: £ 994.43.Current price is: £ 679.16. incl. VAT
For 3 items

Why Choose Our Skylight Blinds?

Smart Light Control for Every Room

With blackout or translucent options

Durable Design

Lasting Quality with cellular fabric and Somfy motors

Custom-Made

Made to Measure for a seamless skylight finish

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

What’s the U-value and how energy efficient is it?

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.

Does it come with self-cleaning glass?

Yes. All our skylights come with self-cleaning glass as standard to reduce dirt buildup.

Can I order custom sizes?

Yes. We offer made-to-measure rooflights to fit your exact requirements. Contact us for a custom quote.

Is it really leak-proof?

Yes. When installed with our official flashing kit and according to instructions, it is guaranteed to be watertight. 

Is the glass safe and shatterproof?

Absolutely. Each unit uses toughened outer and laminated inner glass that complies with UK safety standards (EN12150 / EN14449).

How long is the warranty?

We offer a 20-year guarantee on the glazing unit.

Reviews

6 reviews for 400x2000mm Fixed Flat Roof Skylight | Frameless Triple Glazed Glass Rooflight | 0.9 U-Value | KingsView

  1. Jack Jones

    The attic skylight I got from Skylights.co.uk has been a game-changer. The difference in natural light in my loft is astonishing. Their roof windows are definitely the best on the market.

  2. Sebastian Collins:

    Our staircase area has been beautifully illuminated by a frameless skylight, making every ascent feel special.

  3. Sophia Patel

    Our new skylight has brightened up our kitchen beautifully. Cooking under natural light has never been more enjoyable.

  4. George Wilson

    Our new loft skylight has completely transformed our attic. It’s now our favorite room in the house, all thanks to the beautiful natural light!

  5. Lily Alexander

    Our staircase skylight has turned a previously unnoticed area into our most welcoming space in the house.

  6. Emma Cooper

    I am very happy with the flat roof windows. The quality is premium and the customer service very attentive.

Add a review

Your email address will not be published. Required fields are marked *