When you’re buying a patio door, first find out if the supplier is able to make the doors to your sizes and specification. Here at Quickslide, we offer a made to measure service. If you’re looking to buy a patio door you’ll likely already have an idea of the configuration and style you would like for your door opening and before you go ahead you should make sure the manufacturer is able to achieve this. You should also look for a patio door that has been weather tested to ensure the highest levels of water and wind resistance and air-tightness. If you’re leaning towards an aluminium patio door, make sure it’s thermally broken for the best possible insulation. You should also make a note that patio doors with large glass units should as per building regulations be installed with toughened safety glass. You can rest assured that any Quickslide patio door comes with toughened glass as standard.