CORNER BIFOLDS

Opening up two sides of a room to the garden can make for a showstopping design statement. A system can be planned around a fixed corner post, or, for an opening with no interruption, opt for a product with a moving corner post that stacks back with the doors.

If you want a completely open corner (with no supporting post), factor in structural engineering costs, as the floor above will need to be supported by cantilevered steels. Labour costs for the more complex installation will also be greater. Most manufacturers only make models that fit a 90° corner, although Origin also makes a 135° set.