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What is a U-value?

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 […]

What is triple glazing?

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 […]

What is double glazing?

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 […]

What is Part Q?

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 […]

What is Part K?

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 […]

What is a nickel sulphide inclusion?

Nickel sulphide inclusion is a natural occurrence in glass where tiny particles of metal are still present in the glass and when rapidly heated, either by internal heating or direct sunlight, the heated particles vibrate causing potential glass breakages. Visually you will not be able to see these tiny particles but by performing a heat […]

What is acoustic glass?

Acoustic glass involves two panes of glass separated by a cavity. The gas in this cavity dampens the vibrations before they can reach the second pane. This helps to reduce both the level of vibration and the amount of sound transmitted. When specifying glass to achieve a sound reduction the performance will be improved by […]

What is heat soak testing?

Heat soak testing is a heat treatment process that can be carried out on glass. The testing process involves placing glass that has already been toughened into another oven and heating it to a temperature around 290ºC and then holding it at that temperature for a pre-set period, typically 2 hours. The heat soak testing […]

What is heat strengthened glass?

Heat strengthened glass is subjected to a heating and cooling cycle, similar to toughened glass, but having not been heated to such a high temperature, less energy is trapped in the glass. This makes heat strengthened glass good at resisting thermal heat stress, and less likely to spontaneously break from Nickel Sulphide Inclusions. However, when […]

What is toughened glass?

Toughened glass is annealed glass that has been subjected to a heat treatment process to add strength and give it safe breaking characteristics, leading to it becoming approximately 5 times stronger than annealed glass. When toughened glass breaks the internal tensile stresses are released resulting in a large amount of energy causing it to shatter […]

What is CE marking?

CE marking is the abbreviation of the French phrase “Conformité Européene” which literally means “European Conformity”. The letters ‘CE’ can be seen on many products and by placing the CE marking on a product the manufacturer is declaring, on their sole responsibility, to confirm with all legal requirements to achieve the CE marketing. These products […]

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