A window frame is the framework that surrounds and supports the entire window system. It is comprised of the head, jamb and sill. Head. The head is the main horizontal part forming the top of the window frame. Jambs.

What kind of window frames are there?

The four major types of window frames are vinyl, aluminum, fiberglass, wooden, and composite. It’s important to consider the benefits of each to determine which type fits your needs.

How is a window frame made?

uPVC windows are made from section of frame, which is cut to length and joined together to form the shape of the window. The frames are made by putting molten PVC through a moulding machine and it comes out the other end in long sections of frame which is cooled almost immediately before being cut to length.