What is a Catslide Roof Extension?

A catslide roof extension is a type of roof design that is characterized by a sloping roof that extends beyond the back wall of a building. This type of roof is often used as an extension to a main roof, and is usually installed at the back of the building.

The design of the catslide roof creates an overhang which provides additional space inside the building without increasing the footprint.

The name “catslide” refers to the way the roof slopes and extends beyond the walls of the building, allowing rainwater to drain off the roof and into a gutter system. This type of roof is also sometimes referred to as a “mansard roof” or a “dormer roof”.

The Ultimate Guide to Catslide Roofs

Catslide roofs have become increasingly popular in recent years, and for good reason. These unique roof designs offer a number of benefits, including increased headroom, improved ventilation, and an aesthetically pleasing appearance

What is a Catslide Roof?

A catslide roof is a type of roof design that features a sloping roof that extends beyond the walls of a building, creating additional living space below.

Unlike traditional gable roofs, which are triangular in shape and rise vertically from the walls, catslide roofs slope downward in a gradual, gentle slope. T

This design allows for increased headroom in the attic or top floor of the building, which can be especially beneficial for homes with limited space.

History of Catslide Roofs

Catslide roofs have a long and rich history that dates back to the medieval period. They were originally used in European architecture, particularly in England and France, as a way to create more living space in small homes.

Over time, the design evolved and became more popular in other parts of the world, including the United States.

Today, catslide roofs are a popular choice for both residential and commercial buildings, offering a unique and functional design that can enhance the overall appearance of a property.

Benefits of Catslide Roofs

There are a number of benefits to choosing a catslide roof for your home, including:

  • Increased headroom: As mentioned, one of the main benefits of catslide roofs is the increased headroom they offer. This is particularly useful for homes with limited space, as it provides additional room for storage, living, or working.
  • Improved ventilation: Another advantage of catslide roofs is improved ventilation. This is due to the fact that they allow for more air flow throughout the building, which can help to reduce mold and mildew growth, as well as improve indoor air quality.
  • Aesthetic appeal: Catslide roofs are also known for their aesthetic appeal. Their unique design adds a touch of character and charm to any home, making them a popular choice for homeowners who want to enhance the overall appearance of their property.
  • Energy efficiency: Finally, catslide roofs can also help to improve energy efficiency. This is because they allow for better insulation, which can help to reduce energy costs and improve the overall comfort of your home.

Differences between Catslide Roof and Other Roof Designs

Catslide roofs are unique in their design, as they allow for additional space inside the building without increasing the overall footprint.

In comparison, a traditional roof extension would require an increase in the size of the building’s foundation, which can be a more complicated and expensive process.

In addition, catslide roof extensions are also often easier to install than other roof designs, such as dormers or mansard roofs. This is because the slope of the roof is less steep, which allows for easier installation and maintenance.

Pros of Catslide Roof Extensions

There are many benefits to installing a catslide roof extension, including:

  • Additional interior space: Catslide roof extensions can add significant extra space inside a building, without increasing the footprint. This extra space can be used for a variety of purposes, including bedrooms, living areas or storage space.
  • Increased natural light: The extended roof design of catslide roofs allows for more natural light to enter the building, which can help to create a brighter and more inviting interior space.
  • Improved insulation: Catslide roofs are often better insulated than traditional roofs, which can help to keep the building warm in winter and cool in summer.
  • Increased property value: Installing a catslide roof extension can increase the overall value of a property, making it more appealing to potential buyers.

Cons of Catslide Roof Extensions

As with any type of roof design, there are also some disadvantages to consider before installing a catslide roof extension. These include:

  • Cost: Catslide roof extensions can be more expensive than other roof designs, due to the additional materials and labor required to install them.
  • Maintenance: The extended roof design of catslide roofs can make maintenance more difficult, as it can be harder to reach certain areas of the roof for cleaning or repairs.
  • Climate considerations: Catslide roofs may not be suitable for all climates, as the extended roof design can increase the risk of damage from heavy rain or snow.

Choosing the Right Catslide Roof for Your Home

When choosing a catslide roof for your home, there are a number of factors to consider, including:

  • Building materials: The materials used for your catslide roof can have a significant impact on its overall appearance and durability. Some of the most popular materials for catslide roofs include metal, asphalt shingles, and cedar shakes.
  • Size and shape: The size and shape of your catslide roof will also play a role in its overall appearance and functionality. Consider the overall style of your home, as well as the amount of space you have available, when selecting a catslide roof design.
  • Budget: Finally, it is important to consider your budget when choosing a catslide roof. While these roofs can be more expensive than traditional gable roofs, they offer a number of benefits that make them well worth the investment.


In conclusion, catslide roof extensions are a versatile and attractive roof design that can add significant extra space inside a building without increasing its footprint.

This type of roof is perfect for homeowners who want to create additional living space in their home, or simply want to make a statement with their roof design.

However, before deciding to install a catslide roof extension, it is important to consider the costs, maintenance requirements, and suitability for your local climate.

Be sure to consult with a professional roofing contractor who can provide you with advice and guidance on the best roof design for your home and your specific needs.

Overall, a catslide roof extension can be a great investment for your home, and is sure to provide you with many years of enjoyment and added value.

So why not start planning your next home renovation project today, and consider the many benefits of a catslide roof extension!



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