Rooflight advice
Choosing Rooflight Glass: Light, Solar Control and Insulation
Rooflight glass should be selected for the room beneath it. Compare daylight, solar control and insulation separately, then check the safety and maintenance requirements for the actual installation.
Describe how the room will be used
Describe the room’s orientation, other windows, nearby trees and shading. Mark seating, screens and work surfaces on the plan. A kitchen worktop and a television area may need different consideration of glare. This information is more useful than choosing a glass tint from a small image.
Ask for comparable performance figures
Ask for the light-transmission, solar-factor and thermal information for the exact glass build-up. Establish whether a quoted U-value describes the glazing alone or the whole rooflight. Compare equivalent measurements: the lowest number is not automatically the best answer to every performance question.
Check the safety specification
Give the project designer or installer the location and installation height so they can confirm the appropriate overhead-glazing build-up. Do not infer a safety specification from the colour of the glass or a product photograph. Check that the agreed option is shown in the order summary before payment.
Include maintenance in the choice
Confirm the cleaning instructions for any coating and plan safe access. Self-cleaning glass still needs appropriate inspection and care; it does not remove the need to maintain the surrounding rooflight and roof. Retain the glass description and manufacturer guidance so unsuitable cleaning products are not used later.
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Send us your product choice, dimensions and installer’s drawing so we can help you identify the right specification and documents.
Contact Roof Lantern KitsCompare specifications and configure your rooflight
Have your installer confirm the selected product's ordering dimensions and support details before placing an order. Read the measuring guide and keep the final specification with your project drawings.
Watch the product in context
Pilkington's educational video demonstrates its own self-cleaning coating. This is general background, not confirmation of the coating supplied with your selected rooflight.
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