Open-plan kitchen-diners have become the heart of many modern homes.

They provide somewhere to cook, eat, work, relax and spend time together, often while looking out over the garden through large windows or bifold doors. Roof lanterns, skylights and glazed extensions can make these rooms feel wonderfully bright and spacious.

However, ...

Tilt-and-turn windows are becoming increasingly common in modern homes, apartments, extensions and replacement window projects.

They are practical, secure and excellent for ventilation. Turn the handle one way and the top of the window tilts inwards; turn it again and the whole window opens into the room.

However, this flexible opening ...