Skyseal | Flat Glass Opening Rooflight

If you would like a PVC kerb please ensure you give your internal measurements, however, if you don't require one please give your external measurements

Please note, that the hinges will be on the longest length.

In stock
£617.00 £514.17

£15 Delivery on all Mardome & Skyseal Rooflights.

SkySeal Opening Aluminium Rooflight 

High Quality With fast Delivery 

Our SkySeal Skylight offers a competitively priced glass roof light without compromising quality. Offered in a range of sizes the Skyseal Glass roof light is available on a 5-7 working day lead time and boasts a superb part ‘L’ compliance. 

Natural Light with Added Ventilation 

The SkySeal Flat Glass opens to a maximum of 300mm to increase ventilation and allow fresh air to flow through your home. The choice of both manual and powered opening options are available.

Minimalist Design 

The sleek contemporary design achieves maximum daylight due to the minimalistic framework finish which barely visible from the internal of the building, the units are very easy to install and require very little maintenance other than periodic cleaning.

Thermally efficient 

With a centre pane U-value of 1.1 W/m2K the Skyseal Flat Glass is one of the most thermally efficient double glazed roof lights in the market. 

Glass Spec: 32.4mm Overall (1.1 W/m2K)

  • 6mm toughened outer,
  • 20mm 90% Argon filled cavity
  • 6.4 mm laminated soft coat Low E inner 

Easy & Quick to Install 

The Skyseal Glass Rooflight can be installed on a minimum 2° fall and offers a universal daylight solution for both residential and commercial projects. 

Install this rooflight onto your prepared upstand or purchase a 150mm PVC kerb for a super quick and easy installation.

Why Is An Aluminium Frame Important?

Added Structural Strength

Our highly-developed Aluminium frame provides extra strength and rigidity, minimising structural movement in the skylight once installed, which significantly reduces the chances of failure.

Extra Damage Protection

The aluminium frame acts as a protective layer, encapsulating the glass at its weakest points to prevent accidental damage that would otherwise shatter the glass.

Enhanced Home Security

Provides added security attributed to its tamper-proof fixings accompanied by a strong silicone sealant.

Extra Glass Support

The frame is key in providing extra support to the glass, ensuring the glass stays in place in the event of damage or shattering.


  • Sleek design
  • Speedy delivery
  • Thermally efficient
  • Exceptional U-values
  • High-performance impact-resistant glass
  • Factory sealed units
  • Environmentally friendly (all components are recyclable)
  • Competitively priced
  • Available with a 150mm PVC kerb
An Overview



Stock Type

Made to Order

Frame Material


Frame Colour


Thermally Broken Frame


Overall U-Value


Brand Name


Skylight Type

Manual Opening, Powered Opening

Skylight Style

Flat Glass

Kerb Options

No Kerb, Standard Kerb (150mm)

Trickle Vents


Opening Control Unit

Pole, Rocker Switch, Wireless Remote, Wireless Remote & Rain Sensor

Glazing Material


Glazing Tint


Glass Thickess


Glass U-Value



10 yrs

Questions & Answers (2)

How do I choose the correct size Glass skylight?

mardome glass measure guide

To suit your own Builders upstand

When Purchasing a Glass unit without un upstand  please ensure the outside edge of your ouw timber upstands are positioned at the same distance as you chosen skylight size. For example if you have a rooflight which measures 900mm x 900mm, you need to ensure the the measurement from the out side edge of your upstand is the same. Please see image for further clarification. A 75mm wide upstand is recommended 

Skylight with UPVc Upstand

When purchasing a  Glass unit with a UPVc upstand the stated sizes represent the opening in the roof. Please ensure the opening in the roof is the same size as the purchased skylight. FOr example if your skylight is 750mm x 750mm the opening in the roof also needs to be 750mm x 750mm. 

mardome glass on upvc upstand

Which side will the hinges appear on the Rooflight?

The hinges will appear on the longest length of the rooflight.

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