uPVC encased windows

Encased Windows

Encased Windows: Understanding the Different Types

Encased windows, also known as double-glazed or insulated windows, are becoming increasingly popular in the world of home improvement.

These windows are designed with two panes of glass, separated by a layer of gas or air, and encased in a frame.

This design provides a number of benefits, including improved energy efficiency, reduced noise, and enhanced security. In this article, we will explore the different types of encased windows and their unique features.

  1. uPVC Encased Windows

uPVC, or unplasticized polyvinyl chloride, is a popular material used for encased window frames. This material is durable, easy to maintain, and provides good insulation. uPVC encased windows come in a variety of styles, such as casement, tilt and turn, and sash. They are also available in a range of colors to match any home’s aesthetic.

  1. Aluminum Encased Windows

Aluminum-encased windows are another popular option. They are strong, durable, and low maintenance, making them an ideal choice for commercial buildings and modern homes. Aluminum frames are also available in a variety of colors and finishes, including wood grain, to match the desired look of any building.

  1. Wood Encased Windows

Wood-encased windows provide a classic, traditional look and are often used in historic or period homes. They are available in a variety of wood types, such as oak, maple, and pine, and can be painted or stained to match any home’s décor. However, they require more maintenance than other types of encased windows, as they are prone to warping and rotting if not properly cared for.

  1. Composite Encased Windows

Composite encased windows are a relatively new option, designed to combine the best features of other materials. These windows typically consist of a wooden frame, encased in a layer of uPVC or aluminum. They provide the warmth and classic look of wood, combined with the durability and low maintenance of other materials.


Q: Are encased windows more expensive than single-pane windows?

A: Yes, encased windows are generally more expensive than single-pane windows. However, their energy efficiency can lead to long-term cost savings on heating and cooling bills.

Q: Can encased windows be repaired if they become damaged?

A: Yes, they can often be repaired. However, it is important to hire a professional to ensure that the repairs are done correctly and do not compromise the window’s energy efficiency.

Q: Are encased windows more secure than single-pane windows?

A: Yes, they are generally more secure than single-pane windows, as their double-layer design provides an added layer of protection.


Encased windows are a popular option for homeowners and commercial property owners alike.

They provide numerous benefits, such as improved energy efficiency, reduced noise, and enhanced security.

When choosing the type of encased window for your home or building, consider factors such as style, material, and maintenance requirements.

With proper care, encased windows can provide long-lasting beauty and functionality to any property.