Saris-Extensions Frameless Pitched Roof Window - 300 x 300mm - Triple Glazed, Clear Tint, Toughened Safety Glass
Pitched Roof Skylight 300 x 300 mm Original price was: £184.80.Current price is: £120.43. incl. VAT
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Saris-Extensions Frameless Pitched Roof Window - 500 x 500mm - Triple Glazed, Clear Tint, Toughened Safety Glass
Pitched Roof Skylight 500 x 500 mm Original price was: £328.90.Current price is: £212.68. incl. VAT

Pitched Roof Skylight 400 x 400 mm

(2 customer reviews)

Original price was: £273.90.Current price is: £201.89. incl. VAT

Prices go up when the timer hits zero.


* Glazing Type: Triple Glazed
* Internal glass size: 400 x 400 mm
* U Value: 0.9 W/m²K
* G Value: 58%
* Noise-proofing value: 39 dB
* Free delivery within London (M25)
* Nationwide Delivery
* 20-Year Warranty

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5 in stock

Original price was: £136.90.Current price is: £135.54. incl. VAT
£136.90 incl. VAT
Original price was: £19.38.Current price is: £19.19. incl. VAT
Original price was: £16.09.Current price is: £15.93. incl. VAT
Original price was: £101.43.Current price is: £100.42. incl. VAT
Original price was: £101.43.Current price is: £100.42. incl. VAT
Original price was: £19.90.Current price is: £19.30. incl. VAT
Weight 10.20 kg
Dimensions 55 × 10 × 55 cm



Saris-UK Ltd






Pitched Roof Skylight / Rooflight 400 x 400 mm

Our pitched roof skylights are manufactured to the highest standard making them frameless from the inside and out. They are easily installed with lead flashing, that’s cut on-site that is suitable for all roofs. As they are frameless internally they let in more light.

This high-performance, non-opening frameless skylight is triple glazed with 6mm toughened, self-cleaning glass and a U Value of only 0.9 W/m²K. The internal quoted glass size is 400 x 400 mm, see the structural diagram below.

When purchasing a pitched roof skylight for a tiled roof from us it is very simple.

All our skylights come triple-glazed as standard and have solar protection.

The upstand is formed with the same opening as you can see in our drawings.

All you need to add is the flashing of your choice in our accessories section.

The flashing is then wrapped around your upstand sealing the upstand to your roof tiles.

Make sure you have added the right amount of flashing, the full circumference of your skylight will require flashing.

Our rolls come in 7.5-meter lengths. Let’s say you have bought a 1000 x 2000mm skylight you then require a total of 6 meters as you have 2x 1 meter sides and 2x 2 meters becoming a total of six lineal meters therefore one roll of flashing will be required.


  • Glazing Type: Triple Glazed 
  • Internal Glass Size (QUOTED): 400 x 400 mm
  • External Glass Size: 600 x 600 mm
  • Top Glass Pane: 6mm BS EN 12150 Thermally Toughened Glass
  • Spacer Type: 15mm Black Warm Edge
  • Air Gap: 15mm 90% Argon Filled
  • Middle Glass Pane: 4mm BS EN 12150 Thermally Toughened Glass
  • Spacer Type: 15mm Black Warm Edge
  • Air Gap: 15mm 90% Argon Filled
  • Bottom Glass Pane: 44.2 Low E;  BS EN 14449 Laminated Glass
  • U Value: 0.9 W/m²K
  • G Value: 58%
  • Net Weight: 10.20kg
  • Self-Cleaning: YES
  • UV Protected: YES
  • Clear Tint

Safety and Compliance: Choosing the Right Skylight

When it comes to choosing a roof light for your home, we know that safety is an important deciding factor.

This product conforms to British Standards & Building Regulations and has all Safety Markings.

It is CE marked which is a certification mark that indicates conformity with the relevant EU directives and standards for products sold within Europe.

Our Skylights can be installed at a maximum pitch of 45 degrees.

Installation Specifications and Recommendations:

  • Internal Dimensions: It's important to note that the top pane of glass includes a black border, extending the external dimensions of the unit by 200 millimetres in each direction.
  • Creating the Opening: When preparing for installation, allow an additional 10 millimetres internally from upstand to upstand for proper fitting. For example, for a 600 by 900 unit, the opening should be 610 by 910 millimetres internally.
  • Upstand Construction: We recommend constructing the upstand (the wooden framework housing the skylight) using two-by-one or two-by-two-inch timbers.
  • Foam Rope and Sealant Use: For optimal installation, install foam rope on top of the internal supporting baton, which helps level out weight discrepancies and stress on the glass. We advise using Dowsil 791 black-coloured sealant to create a watertight perimeter around your upstand. Please note that acrylic sealants are not compatible with our units and should not be used.

Find Your Perfect Fit with Our Custom Size Skylight Calculators

Explore the world of Pitched Roof Skylights

At Saris-Extensions, we combine elegance with cutting-edge technology. These skylights are not just additions to your roof; they are masterpieces of design, enhancing the energy efficiency and aesthetic appeal of your home or office. Embrace the seamless integration of style and functionality with our Pitched Roof Skylights.

Best Price
20 Years Warranty
Guarantee Payment Safety
Self Cleaning
Clear Tint
UV Protected
Free Delivery within London (M25)
Аll Glass Panels
Safety Toughened and Laminated Glass
Made In EU
London Based Stock
Quick and easy installation
Step By Step installation guide
24/7 technical helpline


2 reviews

2 reviews for Pitched Roof Skylight 400 x 400 mm

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  1. John Wilson

    Absolutely thrilled with our new skylights! The quality is top-notch, and they were delivered incredibly fast. The customer support team was also very helpful in guiding us through the selection process. We love how the skylights have transformed our living room, making it brighter and more inviting. Highly recommend!

  2. Emily Josh from Sheffield

    Our experience with this company has been fantastic from start to finish. The skylights are of superior quality, and the delivery was impressively fast. Customer support was always ready to help and very knowledgeable. The variety of sizes in stock meant we found the perfect skylight for our bedroom. The natural light has made such a difference – it’s like a new room!

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