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Why glass doors don’t break dangerously

Replacement front composite door

You can’t deny that glass is everywhere, it’s all around us; window panes, car windscreens, coffee tables, tableware, glass door panels, high-rise office buildings, …the list is endless! Practically and decoratively used throughout the world, glass technology really has gone from strength to strength over the last 25 years – which is music to both homeowners and commercial property owners’ ears!

What’s the science behind the glass door?

Most household heat is lost through its glazing and its roof. So, glass production has had to evolve into something a lot tougher over the years due to its highly efficient heat loss reduction qualities. Without getting too technical, there are a variety of techniques used to make different types of glass. Let’s explain the basics:

Drawing Method

Made from a mixture of sand and other substances, the mixture is heated up using extreme temperatures to form a molten glass liquid. Once this has been cooled, the glass can be shaped and moulded. This process is called the ‘drawing method,’ due to it being ‘drawn’ into a tank containing melted tin. The glass then floats to the surface of the tin in the tank, which is perfectly smooth, and as it cools its transformed into a sheet of glass. Once the glass has been shaped, it goes through the ‘annealing process;’ restoring the strength of the glass and preventing it from shattering by reheating and slowly cooling.

Tempering Method

Tempering is another process that can be carried out to strengthen glass. Reheated and chilled using sudden blasts of cold air, tempered glass is around four times stronger than normal or ‘annealed’ glass (untreated). Tempered glass also fractures into small, fairly harmless pieces, in contrast to annealed glass which can shatter into dangerous jagged shards if broken. Due to its safety qualities, tempered glass is ideal for glass door installations around the home.

Glazing and Coatings

Heat absorbent tints and insulated window glazes can also be added to the glass, depending on the type of window being created. Spectrally selective glazing is a viable alternative to these, as it allows the most visible amount of light to pass through whilst blocking high levels of heat-generating infrared light.

So many doors, so little time!

This is why installers use Andy Glass products, from entrance doors to connecting doors and patio to bi-folding doors, we offer highly safe, efficient, durable and stylish designs to suit any Oxfordshire home. So if you’d like to discuss your entrance options further, give us a call today on 01235 530 035 or sent us a an online message.

Merry Christmas

"Prices were excellent..."

D Keegan, Oxford

After speaking with many traders, we went with Andy Glass Windows because they didn't try to give us the hard sell and because their prices were excellent. When they came to install, the 2 men were really careful, clean and very nice.

Merry Christmas

"Very professional..."

S Moss, Witney

From start to finish Andy Glass Windows were very professional, knowledgeable and there was no pressure selling. The surveyor was very thorough. The installers were prompt, polite, and did a very professional job installing our composite doors.

Merry Christmas

"Result is excellent..."

B Kirk, Cumnor

We were looking for a window product to compliment the renovation of our new home and Andy Glass Windows understood exactly what we were looking for and provided the solution with timber effect flush fitting windows. The process from ordering through to completion was very smooth and the finished result is excellent.