Em-Glaze Modular Rooflight

Em-Glaze modular flat glass rooflights are high-quality, aesthetically pleasing prefabricated flat glass rooflights.

Available in a wide range of sizes or made to measure, Em-Glaze flat rooflights provide a clean, minimalistic finish inside and out. Manufactured with flat sealed glass units, each rooflight incorporates a fully welded thermally broken aluminium frame and cill detail. All visible aluminium is polyester powder coated to Anthracite Grey RAL 7016 as standard or can be powder coated to a specific RAL colour if required.

The flush design of the Em-Glaze modular rooflight ensures efficient rainwater run-off. The warm-edge spacer bar and EPDM gasket also guarantees that the double glazed unit holds unrivalled insulation value over its full lifetime. Many rooflight accessories are available to be used in conjunction with the Em-Glaze flat rooflights.

Non-fragile to CWCT Class 1 as standard ensures the highest performance in safety is achieved.

Key Benefits:
  • Flush glazed glass-to-edge design
  • Non-fragile to CWCT Class 1 tested as standard
  • Good thermal and sound insulation properties
  • Factory pre-glazed for easy installation
  • Ventilation options available
  • Secure, welded glazing frame
  • Standard frit width – 84mm
  • Compatible with builders and uPVC upstands
  • Thermally broken frame
  • Aluminium frame powder coated to any RAL colour
  • Em-Glaze EasyClean available on short lead time
  • 14 stocked sizes available for next day delivery

Em-Glaze is also available in custom sizes and specification (including walk-on). Bespoke units are available from 3-5 weeks.

Download our brochure for full details.

Shapes and sizes

Em-Glaze Modular units are available in square and rectangular shapes. A selection of circular sizes is also available.


The shape of a rooflight relates to the shape of the roof opening.

  • Square
  • Rectangular
Size availability

Offered in a range of standard sizes ready for immediate dispatch.  Further bespoke sizes are available to special order.

Click here to see the size chart of stocked sizes


Double glazed Em-Glaze modular flat glass rooflights are manufactured with 32mm hermetically sealed Low E, argon filled units as standard, with a warm edge spacer, providing a high performance system.


The glass can be finished as Clear for highest light transmission or Opal Diffused for increased security. Solar Control and Self-Cleaning coating options are also available and can be combined if both are required.

Available options:

  • Clear
  • Opal Diffused
  • Solar Control
  • Self-Cleaning


Em-Glaze flat glass modular rooflights are designed to be used in conjunction with Em-Curb upstands and can also be installed to existing builder’s upstands.  For both options we recommend that the units are installed to a pitch of between 5˚ and 15˚.
Em-Curbs represent excellent value for money and enhance the overall appearance of the rooflight.

  • Em-Curb ECO uPVC 150mm Splayed
  • Em-Curb ECO uPVC 150mm Vertical
  • Em-Curb ECO uPVC 300mm Splayed
  • Em-Curb ECO uPVC 350mm Oversleeve Splayed

For full details on the performance of the upstand options available, see Em-Dome Upstands

Em-Collars are also compatible with this product and provide a thermally broken solution for replacing existing rooflights.  They would typically be installed to an existing or newly formed builder’s upstand where the dimensions do not suit a standard sized Em-Glaze flat glass modular rooflight.


Em-Glaze flat glass modular rooflights are available with a wide variety of ventilation types:

Options available:

  • Permanent Trickle
  • Controllable Trickle
  • Controllable Rotating
  • Hinged Manual Spindle Opening
  • Hinged Electric Actuator Opening
  • Powered Ventilation

Certification & Performance

Requirement Result Classification
Watertightness Passed EN1873
Air tightness Class 4 (60pa) EN12207/EN1026
Sound insulation 34 (-2,-4) dB DS/EN717-1/A1
Light transmission 86%
Weight 55 kg/m2
Thermal insulation
(with uPVC 150mm Vertical upstand)*
1.24 W/m2K EN/ISO 10077-1
EN/ISO 10077-2

*Thermal transmission refers to U-Values.  For Ud-Values, please contact us.

All Em-Glaze flat glass modular rooflights, when installed on Em-Curbs in accordance with manufacturer’s instructions, are guaranteed for a period of ten years.  For further information contact us.

Installation Instructions

Em-Glaze flat glass modular rooflights must be installed on an upstand that is set at a slope of between 5˚and 15˚.

Ordering & Delivery


We supply our modular product range to both individual and commercial customers. If you would like to apply for a trade account, please contact us or click here to find a Whitesales merchant in your area.


Free delivery on all orders over £500 for products shipped to Mainland UK only; £20 delivery surcharge for orders under this amount. For deliveries outside of Mainland UK we offer delivery to a port on the mainland for onward shipping arranged by the customer, or we can agree a carriage charge relevant to the order.

Next day for most stock products for orders placed by 2pm. Non-stock products: 7 -28 days.

For further information, see our full terms and conditions.

Contact us and
request brochure