Windows Glasses
Windows Glasses
Energy efficient windows PDF Print E-mail
Written by Administrator   
Thursday, 27 February 2014 20:45

Windows are made up of various components such as the glass, frame and hardware all acting together to provide a certain level of performance. Those components that provide substantial protection from heat gain and heat loss and reduce the energy consumed by the whole building are considered energy efficient.

Low-e glass


Low-e (low emissivity) glass uses a transparent coating to minimise the amount of heat passing through the glass while still allowing light through. This near invisible coating reduces the U-value of the glass which measures how well a window prevents non solar heat loss or gain. The lower the U-value, the greater a window's resistance to heat flow and the better its insulating value. While a low-e coating on standard single glazing reduces the heat transfer caused by the sun’s rays (solar radiation), it does nothing to reduce conductive and convective heat flow.


Double glazed windows


An ideal energy efficient solution is to reduce all forms of heat transfer. Double glazing is considered the vehicle for all high-performance windows, in climates hot, cold and mixed. When combined with low-e glass on at least one pane and argon gas in between, double glazing provides the best thermal performance. U-values as low as 1.8 are possible, compared with about 5 in the case of a single-glazed clear window.


The narrowest air gap used in double glazing is 6 mm but this should be avoided unless there is no alternative. The use of wider gaps (10-20 mm) will improve the U-value and can increase its star rating by at least half a star (see Windows Energy Rating Scheme below).


Window frames


To complement the glazing system, a frame with a low U-value assists in reducing the whole window U-value. Frames that use timber, uPVC, or a composite aluminium/timber design, outperform standard aluminium windows by providing advanced thermal performance.


Good Weather Seals


Hot and cool air can escape or enter a home through gaps and cracks around sashes and frames. Good window seals are essential to improving energy efficient performance. Traditionally, windows with compression seals, as fitted to awning and casement windows, tended to have superior air infiltration performance. However, recent advances for the seals in sliding windows have improved.

Different types of windows more time PDF Print E-mail
Written by Administrator   
Sunday, 24 November 2013 19:47

Windows can really complement the appearance of a home or building. When choosing a type of window glass, you need to consider the look you want, as well as the practical aspects of the glass.  You might be wondering, what are the different types of window glass you can put on your home. This article sorts types of window glass by where it is typically used: in the home or in a commercial building. Read on to learn more about the different types.

For Houses

Sheet glass, also known as float glass, is the typical glass found in older homes. Now, Low-e glass is recommended because it is efficient in keeping heat out. It allows certain sources through it, but keeps out the excess heat trying to penetrate through your windows.

Tinted glass has a tint to it that keeps out the light. By keeping out the light, the goal is to keep out unnecessary heat. However at the same time, when there is an overcast day, this type of glass blocks out the light almost too much.

Pattered glass is used to insure privacy. This type of glass has a pattern on one side to prevent other people from seeing through the glass. This is the most common type of bathroom glass used for privacy purposes.

For Commercial Buildings

Horticulture glass is less expensive than the typical sheet glass and is typically used when constructing greenhouses.

Tempered glass not only has safety features for homes, but for vehicles as well. If tempered glass breaks, it crumbles into pieces to prevent shards of glass from hurting anyone.

Wired glass is used for security purposes. This specific type of glass has steel wire mesh imbedded into the glass. This type of glass not only provides reinforcement, but also keeps fire from spreading.


Last Updated on Saturday, 21 December 2013 19:48
Comparison of different type of glasses PDF Print E-mail
Written by Administrator   
Wednesday, 28 August 2013 00:00


Glass Type Functionality
Sound Insulation Heat Insulation Light Safety
Float √√√√
Tinted √√ √√
Reflective √√
Toughened √√√√ √√
Double Glazed Normal √√ √√√ √√√√
Double Glazed Toughened √√ √√√ √√√√ √√√√
Triple Glazed Normal
√√ √√√ √√√√
Last Updated on Wednesday, 28 August 2013 05:13
Low-Emissivity Glass PDF Print E-mail
Written by Administrator   
Saturday, 01 June 2013 20:15


Low-emissivity (Low-E) glass is glass that has a special coating that reflects the infrared portions of light, while letting the visible light spectrum through. This is beneficial because the infrared heat from the sun is reflected away from the building in the summer and during the winter the infrared heat that is already inside a building is reflected back into the space.

There are two general types of Low-E coating, tin or silver. Tin oxide is applied to the glass at high temperatures to create a very hard and durable Low-E coating. The alternative is a silver coating, which must be enclosed in an IGU so that the silver doesn't degrade over time due of oxidation.

Low-E coatings often have a slight blue-green tint, which many architects find unacceptable. Newer Low-E coatings are produced with less tint, but it is important to review product samples daylight at varying angles to fully understand what the aesthetics will be when installed.

Last Updated on Friday, 07 June 2013 20:26
Easy Instruction How to Seal Around the Glass in a Window PDF Print E-mail
Written by Administrator   
Sunday, 07 April 2013 11:23


1. Remove any old caulk from your window and wash the area with a cleaning solvent.

2. Wash your windows and sills thoroughly with soap and water and remove any old, flaking paint that would interfere with adhesion. Let the windows dry completely before adding caulk.

3. Press foam caulking along the bottom length of a double-hung window sash. Press it so the caulking sticks to the underside of the sash, with the paper backing on the opposite side, which is not sticky. Peel the paper backing off to reveal the insulating foam. Close the window.

4. Tear off pieces of rope caulking as long as your windowpanes. Press the caulk down into the gaps between the glass and the frame.


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