07 May

What is the correct pitch for rooflights?

Categories: FAQs

The correct pitch for rooflights installed on a flat roof is between 3 and 5 degrees. This ensures that water will drain off the surface of the glass and avoid ponding, a process in which puddles of water on the glass surface evaporate and leave unsightly dirt and staining on the glass. For more efficient… Read more

07 May

What is the maximum pitch for rooflights?

Categories: FAQs

The maximum pitch for a rooflight on a flat roof is 5 degrees. For pitches greater than 5 degrees, the pitch must be built into the roof with the kerb constructed perpendicular to the roof; otherwise the down leg of the framework may foul the external face of the kerb. This could result in a… Read more

07 May

What is the minimum pitch for rooflights?

Categories: FAQs

The minimum pitch for rooflights is 3 degrees. This is enough to ensure that water will drain off the surface of the glass and avoid ponding. Glass inherently has a degree of flex when installed flat, known as ‘deflection’ and means that without pitching the rooflight up slightly at one end, rainwater will accumulate and… Read more

04 May

What is a thermal break?

Categories: FAQs

Thermal breaks are manufactured out of material that is very poor at conducting heat, so that when introduced into a metal frame it forms a physical barrier to stop heat being conducted through the framework. The thermal break material should act as an insulator as well as maintain structural integrity of the frame assembly. View… Read more

04 May

What is cold bridging?

Categories: FAQs

Cold bridging is when condensation forms on the inside of the rooflight framework. This occurs when the rooflight is situated over a room with high humidity, such as a kitchen or bathroom, and the warm, humid air inside the building contacts the cold surface of the metal frame, if there is no thermal break or… Read more

27 Apr

What is a Krypton filled cavity?

Categories: FAQs

The cavity is the width between two panes which can be filled with Kyrpton to improve the U-value rating of a double or triple glazed rooflight. A rooflights energy efficiency can be increased by the use of inert gas, such as Kyrpton, as this has a lower thermal conductivity than air and also give it… Read more

27 Apr

What is an Argon filled cavity?

Categories: FAQs

The cavity is the width between two panes which can be filled with Argon to improve the u-value rating of a double or triple glazed rooflight. A rooflights energy efficiency can be increased by the use of inert gas, such as argon, as this has a lower thermal conductivity than air and also give it… Read more

20 Apr

What is a U-value?

Categories: FAQs

A U-value measures how effective a material is as an insulator. The lower the U-value of your rooflight, the better it is, as a heat insulator. When installing your rooflight into your home, you will notice the U-value is lower for the triple glazed options than the double glazed. Therefore, the triple glazed option will… Read more

13 Apr

What is triple glazing?

Categories: FAQs

Triple glazed windows consist of three sheets of glass, with a gap between each of them to create an even greater insulating barrier than double glazed units. The space between the glass is often separated by a layer of air, or a heavier inert gas such as Argon, Kyrpton or Xenon. Triple glazed windows provide… Read more

13 Apr

What is double glazing?

Categories: FAQs

Double glazed windows consist of two sheets of glass, with a gap between them to create an insulating barrier. The space between the glass is often separated by a layer of air, or a heavier inert gas such as Argon, Kyrpton or Xenon. Double glazed windows better insulate your property and this can result in… Read more

06 Apr

What is Part Q?

Categories: FAQs

Part Q provides relevant requirements of compliance regarding security in dwellings, as part of the Building Regulations 2010 for England. This document imposes a mandatory requirement for windows, doors and rooflights in easily accessible locations on dwellings to meet minimum performance criteria for security. Rooflights in easily accessible locations must be shown by test to… Read more

06 Apr

What is Part K?

Categories: FAQs

Part K provides relevant requirements of compliance regarding protection from falling, collision and impact, as part of the Building Regulations 2010 for England. When you are considering access to a roof space there are several factors that should be considered in order to comply with the Building Regulations, and in particular Part K. You can… Read more

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