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window frame

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Secondary Information

Definition

A window frame is the part of a window that surrounds the glass and holds it in place. It is typically made of wood, metal, or vinyl. The frame provides structural support for the window and helps to keep it weatherproof.

Window frames can be classified into two main types:

  • Fixed frames: These frames cannot be opened or closed. They are typically used in windows that are not intended to be opened, such as those in bathrooms or kitchens.
  • Operable frames: These frames can be opened and closed. They are typically used in windows that allow for ventilation or provide a view.

Window frames can also be classified by the material they are made of:

  • Wood frames: Wood frames are the most common type of window frame. They are made of solid wood or wood composites. Wood frames are typically strong and durable, but they can be susceptible to rot and decay.
  • Metal frames: Metal frames are less common than wood frames, but they are becoming increasingly popular. They are made of materials such as aluminium, steel, or vinyl. Metal frames are typically more durable than wood frames, but they can be more expensive.
  • Vinyl frames: Vinyl frames are the least common type of window frame. They are made of a synthetic material called polyvinyl chloride (PVC). Vinyl frames are typically less expensive than wood or metal frames, but they are not as durable.

The type of window frame that is used depends on the specific needs of the application. For example, wood frames are often used in homes because they are relatively inexpensive and can be stained or painted to match the décor. Metal frames are often used in commercial buildings because they are more durable and can withstand the elements. Vinyl frames are often used in mobile homes because they are lightweight and easy to install.

How can the word be used?

The window frame was painted white.

window frame

Different forms of the word

Noun: the surrounding frame of a window, typically made of wood, metal, or plastic.

Verb: to provide with a window frame.

Etymology

The word "window frame" comes from the combination of the words "window" and "frame".

The word "window" comes from the Old English word "windæge", which means "hole in a wall to let in light".

The word "frame" comes from the Old English word "fremman", which means "to make" or "to do".

The first recorded use of the word "window frame" was in the 14th century.

Question

What can window frames be made from?

AQA Science Exam Question and Answer

Question:

Explain the role of a window frame in energy efficiency and insulation. Discuss the materials commonly used in window frames and how they contribute to maintaining indoor comfort and reducing heat loss.

Answer:

A window frame serves as a crucial component in achieving energy efficiency and insulation within buildings. It plays a significant role in preventing heat transfer between the interior and exterior environments, contributing to optimal indoor comfort and reduced energy consumption.

Window frames are typically constructed using various materials, each with distinct thermal properties. Common materials include wood, vinyl, aluminium, and fibreglass. Wood is a natural insulator, providing good thermal performance and reducing heat conduction. Vinyl frames offer low thermal conductivity and are resistant to moisture, enhancing energy efficiency. Aluminium frames, while durable, have higher thermal conductivity and may require additional thermal breaks to reduce heat transfer. Fibreglass frames combine strength and insulation properties, making them effective in minimising energy loss.

The design and construction of window frames also impact energy efficiency. Multi-pane windows, where two or more glass layers are separated by an insulating gas, further reduce heat conduction. Low-emissivity (low-E) coatings on glass panes help control solar heat gain and heat loss.

Properly designed and installed window frames contribute to maintaining a comfortable indoor temperature by minimising heat loss during colder months and preventing excessive heat gain in warmer weather. This results in reduced reliance on heating and cooling systems, leading to lower energy bills and a smaller carbon footprint.