400x3000mm Pitched Roof Window (6°-45°) | Fixed Triple Glazed Skylight | 0.9 U-Value | KingsView
£ 1.000.00 Original price was: £ 1.000.00.£ 519.00Current price is: £ 519.00. incl. VAT
Don’t miss out on our limited-time offer — once the countdown ends, this exclusive deal will be gone for good.
15 in stock (can be backordered)
Skylights.co.uk: Trusted rooflights. Built to prevent leaks.
Type: Fixed Frameless Pitched Roof Skylight
Internal Size: 400 x 3000 mm
External Size: 600 x 3200 mm
Glazing Type: Triple Glazed
Net Weight: 66kg
U Value: 0.9 W/m²K
G Value: 58%
Light transmittance : τv [%] 72
Sound reduction (EN 12758): 39dB
UV transmission : τuv [%] 0
Roof Pitch Range: 6° to 45°
⚠️ Some sellers offer large skylights with thin glass to cut costs — but this is unsafe.
Tests show that large skylights need thicker, reinforced glass to prevent sagging and water pooling.
All Skylights.co.uk products are built to strict safety standards, ensuring lasting strength and reliability.
Premium Pitched Roof Skylights
Introducing the Pitched Roof Skylight 400 x 3000 mm, exemplifying modern architectural design and functionality. With over 20 years of expertise in crafting superior skylights, we’ve seamlessly integrated form and function to create a skylight that floods your home with natural light while making a bold minimalist statement.
Why Choose Our Frameless Pitched Roof Windows:
- Energy Efficiency: Enjoy exceptional thermal performance with advanced triple-glazed units and a 15-millimeter warm edge spacer filled with Argon gas. Achieving an impressive U-value of 0.9 W/m²K, our skylight ensures your home maintains comfortable temperatures year-round, reducing energy consumption.
- Unobstructed Views: The frameless, minimalist design enhances natural light penetration, providing panoramic views of the sky that harmonize with your pitched roof’s architecture.
- Self-Cleaning Convenience: Effortless maintenance with a sunlight-activated self-cleaning feature that keeps the glass clear and spotless.
- Versatile Installation: Suitable for roof pitches ranging from 6° to 45°, ensuring compatibility with a variety of home designs.
- Peaceful Ambiance: Effective soundproofing enhances indoor tranquility.
- Sun Safety: Provides protection against harmful UV rays, preserving your interiors.
- Safety First: Constructed with safety-toughened glass for ultimate security.
- Regulation Compliant: Meets all British Standards & Building Regulations and carries the CE safety marking. With a robust 20-year warranty, our skylights are built for durability and long-lasting performance.
Essential Skylight Accessories
Enhance your pitched roof skylight with essential accessories for seamless installation and optimal performance:
- Skylight Blinds for Pitched Roof Window 400 x 3000 mm: Custom blinds designed to fit your skylight perfectly, offering control over light and privacy to create your desired ambiance.
- Installation kit for 1 x Pitched Roof Skylight 400 x 3000 mm (for a slate roof) or Installation kit for 1 x Pitched Roof Skylight 400 x 3000 mm (for a tiled roof): Includes everything needed for secure, stress-free installation, ensuring your skylight performs optimally.
- Foam Rope – Structural Glazing Tape – 9mm Thick (7.5m Rolls): High-quality tape for effective sealing and structural support during installation.
- Weatherproofing Sealant (Silicon) – DOWSIL™ 791, 310ml: Durable sealant for a weatherproof finish, protecting against the elements and maintaining indoor comfort.
- Lead Flashing Smooth 45cm x 5m Roll Grey – Easy-Trim and Lead Flashing Textured 45cm x 5m Roll Grey – Easy-Trim: BBA-certified lead replacement offering versatility for both pitched and flat roof applications.
- Self-Cleaning Liquid Smart Glass Bottle 15ml: This special solution maintains self-cleaning properties, ensuring easy maintenance and clear, sparkling glass with minimal effort.

Our Pitched 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

Choose Skylights.co.uk
We offer an extensive range of standard sizes, including the popular 3000 x 400 mm skylight (also known as 3 x 0.4 m roof light), as well as fully custom skylights to find the perfect pitched roof skylight for your project.
Benefit from:
- Exceptional Thermal Performance: Outstanding energy efficiency with triple glazing for year-round comfort.
- Abundant Natural Light: Enhance your space with beautiful natural light and modern design.
- Elegant Design: Add sophistication to any environment with our sleek pitched roof skylights.
Download our full product catalogue to explore our extensive range of Pitched Roof skylights.
Ready to discuss your skylight needs? Contact us today!
Find the best deals on Pitched roof windows 400 x 3000 mm
We provide competitive pricing on high-quality Pitched Roof Windows, also measuring 400 x 3000 mm. You can use their calculator for custom-size options.
🗺️ 400 x 3000 mm Pitched Roof Lights Near Me
Searching for a 400 x 3000 mm pitched roof light near you? Also known as a 0.4 x 3 m skylight, this ultra-slim, extra-long format is perfect for pitched corridors, narrow vaulted extensions, and linear roof designs that demand bold natural light. We manufacture frameless pitched roof windows that elevate ceilings into architectural features.
✅ Architectural Format – Long, Lean, and Light-Filled
✅ Built to Order with Manufacturer Pricing
✅ Installer Advice Available – We’re Here to Help
✅ 20-Year Warranty – Performance Guaranteed
✅ Fast UK Delivery with Trade Support Options
Engineered to handle UK weather and comply with all building regulations, our skylights are custom-built, UKCA certified, and shipped direct—bringing precision, performance, and daylight to even the most challenging rooflines.
| Weight | 108 kg |
|---|---|
| Dimensions | 55 × 10 × 55 cm |
| Brand |
Skylights.co.uk |
| Color |
Clear |
| Internal Size |
400 x 3000 mm |
| External Size |
600 x 3200 mm |
| Glazing Type | |
| Glass Tint | |
| Self-Cleaning: |
Yes |
| Roof Type |
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 |
Sold By Manufacturer
15 in stock (can be backordered)
Available on back-order
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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.
Pitched Roof
Frameless Triple Glazed
Skylights In Stock
Payment Methods:
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.
Our triple-glazed pitched roof skylights flood your space with natural light while delivering exceptional thermal efficiency. Pair them with our separately sold Insulated Upstand, featuring 40mm core insulation to minimize heat loss and cut energy costs.
Why Choose Our Insulated OSB Upstands?



Brighten Your Home & Save – Bundle and Save!
Upgrade to our triple-glazed pitched roof skylights for stunning natural light and superior energy efficiency.
Add our Insulated Upstand and save up to 7% when you bundle!
✔️ Maximize thermal performance
✔️ Lower your energy bills
✔️ Enjoy long-lasting durability
Get the complete, premium solution for less – bundle your skylight and upstand today!
Get a Bundle with extra 7 % Discount on Skylight and Upstand
Before and After
See how a space is completely transformed with a Skylights.co.uk
- Maximum daylight
- Modern minimalist design
- Superior insulation & UV protection
One change. Total transformation.
Our Roof Windows in Action
Photos from completed projects by our clients






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
Yes. This unit is designed for pitched roofs between 6° and 45° and is compatible with both tile and slate. We also supply flat roof options separately.
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, our skylights can be installed on both cold and warm roof types.
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.






Harley Gordon –
Our pitched rooflight has made such a difference in reducing outside noise. It’s like our own quiet sanctuary now.
Toby Archer –
As a builder, I’ve installed quite a few skylights but the ones from KingsView are by far the easiest and most satisfying to fit. The customer support was super nice, always available to answer my technical queries.
Lewis Fox –
In Manchester, our attic space was dark and unused. The 400 x 3000 pitched skylight we installed has completely transformed it. Highly recommend KINGSVIEW!
Niamh Byrne –
I was a bit hesitant at first but installing a pitched roof skylight in our tiled roof was the best decision. The skylight is not only functional but also adds an elegant touch to our home’s aesthetic.
Isaac Thompson –
I opted for a long 400×3000 mm skylight for our hallway. It brought light into a typically dark area. Installation was fast and secure and the visual impact is just what we hoped for.
Amelia Longwood –
Great customer service and a brilliant product. The roof window makes our loft look amazing!
Theo Winsborough –
Crystal-clear glass, modern frameless design, and easy installation—this pitched roof window is perfect!