French doors are a popular option for replacement doors and windows in modern or period homes. They combine an attractive appearance with lots of light.
Bifold doors are those where panels concertina together when they are opened. Bi-folding units have doors that open inwards or outwards.
When property owners decide to replace windows and patio doors they have a choice - aluminium or uPVC and it's not an easy decision.
The two most popular types of windows are the casement and the sash. A sash window has sliding panels that overlap.
Many window suppliers offer uPVC or PVCu windows and customers can be confused about the difference between the two.