Stage 2

Glazing Types & Performance

24 Slides

• Feature Overview
• Performance Testing
• Thermal
• Hi-Therm
• Triple
• Integral
• Alternative Glazings

Glazing Types & Performance

Feature Overview

Feature Overview

Keylite offer a range of glazing units to suit any environment. All of our roof windows include many key features, such as warm edge glazing, toughened outer and inner panes, as well as an inert gas filled cavity.

Warm Edge Glazing

Warm Edge Glazing refers to the separated panes of glass by an aluminium spacer bar. This slows down the rate of thermal conductivity from one side of the glazing to the other, therefore reducing heat loss and improving the thermal efficiency of every Keylite roof window.

Toughened Panes

Keylite glazing units are designed with toughened outer panes. Toughened glass is also know as tempered glass. This has a far higher load and breakage resistance than annealed or laminated glazing.

Gas Filled Cavity

Most of our glazing units are filled with Argon gas to prevent heat loss through the cavity. Argon gas has a 34% reduced thermal conductivity level compared to still air.

Our Triple glazing unit contains a more expensive and even more thermally efficient substance.

Performance Testing

Glazing Testing

Our glazing types have been individually tested to establish their performance across a range of sectors. These tables show how each glazing unit respectively performed within each tested area.

U-Value

A roof window's U-Value is the measure of thermal performance. The lower the value, the more thermally efficient the glazing is.

Decibel Rating

The dB value refers to the glazing's decibel rating. The higher the figure, the greater the level of sound reduction.

Infrared Radiation

A g-value is a measure of infrared radiation. The lower the g-value, the lower the percentage of solar radiation will be emitted by the glazing.

Light Transmittance

Light transmittance is measured by a Tv rating. High Tv levels represent high light reflectivity.

Glazing Types

Thermal (T)

Hi-Therm (HT)

Hi-Therm (HT)

Laminated glazing contains a plastic interlayer between two glass panes. Upon impact, this will hold the glazing together and remain solid within the frame. This feature classifies our Hi-Therm unit ideal for safety applications.

The 6mm laminated inner pane also reduces acoustic transmission through the glazing due to the increases thickness of this internal barrier. Therefore, our Hi-Therm glazing is also our most effective sound reduction unit.

Triple (KTG)

Triple (KTG)

Our Triple Glazing unit achieves the lowest U-value of any of our glazing types. This is due to the additional glass pane as well as the Krypton gas filled cavities. Krypton gas has a low thermal conductivity level which rapidly reduces the rate at which the heat is lost.

Typically our KTG unit is mistaken as the optimum noise reduction glazing. However, acoustic vibrations will travel through each glass pane at exactly the same rate due to their consistency in thickness. The additional centre pane does not benefit sound reduction.

Integral (I)

Integral (I)

Key features of our Integral Glazing:

Integral glazing units are ideal solutions for kitchens, bathrooms and sterile environments. The blind is fully secured within the glazing ensuring protection against dust and moisture.

Manually operating integral blinds are supplied with a scratch resistant magnet to manoeuvre the blind as desired from outside the glazing. Alternatively electric operation is recommended for out of reach area.

Alternative Glazings

Frosted

Our Frosted glazing is ideal for bathrooms and private spaces.

Tinted

Our Bronzed glazing creates a subtle tint on light reflected into a living space.

Self Cleaning

Self Cleaning glazing contains a chemical which will erode organic matter into small particles that can easily be washed away by precipitation.

Quiz

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