The patio door/ sliding door style is traditionally made from merging two separate panels of glass together with the UPVC frames.

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Even though the patio doors tend to be made of two glass panels there are now options available to get bigger patio doors made up to four glass panels with the two sliding panels needed that slide on top of one another to open and close.The UPVC patio doors are well known for there easy maintenance and easy upkeep. Thanks to their advanced design, they are susceptible to rotting, rusting and damaging over time due to different temperatures. Even though patio doors have a lot more use of glass in comparison to the framing of the door. The glass is thermally toughened meaning that it is then extremely difficult to break and the internal glazing bead means that this is a great security feature as the glass can not be removed from the outside. Even though a larger surface area of glass is used to make the patio doors, the thought process is that there will be a large amount of heat loss however thanks to advancing in technology and designs new energy efficient glass is used. Based on size, amount and specifications there prices can differ between £800 to £2000 yet again that is the price of the doors only not including the installation fees.