uPVC Double Patio Door Locks
Plastic double-doors are a popular choice these days when it comes to wanting a modern French door setup. Whether it's your conservatory doors, a set of double patio doors, or indeed a pair of balcony doors, this modern solution to double doors has become increasingly popular and can be seen probably on multiple properties on most streets throughout the UK.
Unlike sliding patio doors, the advantage of a set of double doors is that you are able to open both for a wide open space into the outdoors. This can be delightful in summer when you want to bring the outside in, but also gives a more practical advantage when it comes to moving large items of furniture etc.
As with all double-door setups, you have a primary door and a secondary door - also referred to as 'master' and 'slave' doors. The slave lock generally offers shootbolt functionality, firing bolts off into the top and bottom of the frame to secure the slave door, and then the primary door (the 'master' door) locks into the slave door along the usual locking edge of the door, treating the slave door as a frame to lock into.
For this reason, the range of locks available when it comes to multipoint locks is generally somewhat limited to those which have both master locks and slave locks available.
This is not strictly accurate however, as with most double doors made from uPVC, you have the centre mullion where you would fit your keeps onto, with the slave lock situated behind it (seen in the photo to the right). So in reality, you can use any suitable slave lock in this scenario, and the master lock then can be any suitable multipoint lock in reality. It does not have to match up with the slave lock in any way in most applications. But to keep things simple, it's generally advised that you stick to locks which have available pairing of master and slave locks, quite simply because they have suitably been geared towards double door setups so will have suitable locking points for double doors.