Standard glass used in construction is called clear float glass, but the name is misleading. This is the most commonly used type of glass, which contains a definite percentage of iron oxide. This inclusion is placed with the aim of making the glass stronger, but has the side effect of tinting the window or door a shade of pale green. The hue gets more noticeable the thicker the glass is.
To offset that effect, you have low iron glass, which uses about a fourth the percentage of iron in its manufacture. This glass is a lot clearer in comparison to standard clear glass. So much that it is also called as crystal clear, sparkling, or water white. The enhanced clarity makes it the prime choice for use in architecture and décor, especially in settings where it is important that that the glass be transparent. Low iron glass is also well suited for frameless applications, laminations, or for panes thicker than 6mm. In the last case, regular glass would have an obvious greenish tint distorting the view from both sides.
It is not just the beauty aspects that speak in favor using low-iron glass. This superior glass is also more effective at transmitting light and decreasing reflections. In rooms that have a dim and cold feel inside, or in places where it is important that enough sunlight must get in, using low iron glass is the ideal solution. This is because they let in above 90 percent of the outdoor light, which is significantly greater than regular glass could manage. Low-iron glass also makes it easier to match windows, panels, etc, at both the time of installation and afterwards. Also, when dyed for color, this glass displays the true color without any distortions.
Although it is costlier than regular float glass, low iron glass is a highly popular material in construction projects like museums, retail offices, lobbies, airports, recording studios, interrogation rooms, etc. The lack of a greenish tint is also environment friendly, letting the interior of the room stay cooler by absorbing less infrared energy than float glass. This glass is made out of readily available, recyclable substances. It is also useful in the making of solar panels, which work by converting energy from the rays of the sun to electrical energy.
That was some information on low-iron glass, its properties and uses, and why it is a good substitute to regular float glass.