Duplex Housing in Ireland & the UK with the Thermohouse building system (ICF)

Duplex Housing in Ireland & the UK with the Thermohouse building system (ICF)

As the demand for housing continues to rise in Ireland and the United Kingdom, innovative solutions are needed to address the challenges of limited space, energy efficiency, and construction speed.

One such solution that is gaining traction in both countries is duplex housing, and when combined with cutting-edge construction methods like Thermohouse ICF, it presents a promising path forward. In this article, we will explore the concept of duplex housing, its advantages, challenges, and how Thermohouse ICF can offer solutions that redefine the way duplexes are built.

Understanding Duplex Housing

Duplex housing, known as maisonettes in the UK, refers to a residential building comprising two separate but mirror-image living units, often stacked on top of each other, with each unit having its own entrance. This arrangement maximizes the efficient use of space in urban areas while providing residents with the privacy and benefits of a standalone home.

Key features of duplex housing include:

Separate Entrances: Each unit in a duplex has its own private entrance, ensuring privacy and independence for the occupants of each side.

Shared Wall: Duplex units are often attached to one another, sharing a common wall (referred to as a party wall). This shared wall is designed to minimize noise transfer between the two units.

Mirror Image Design: Duplexes are typically designed so that one unit is a mirror image of the other. This means that if you were to divide the building in half along the common wall, the layout and design of one unit would be the reverse of the other.

Versatility: Duplexes are versatile in terms of use. They can be used for both rental and homeownership. Some people choose to live in one unit and rent out the other to generate rental income, while others purchase duplexes as investment properties.

Cost Sharing: In some cases, certain utility expenses or maintenance costs may be shared between the two units, making it more cost-effective for the occupants.

Advantages of Duplex Housing

Space Efficiency: Duplex housing optimizes space by housing two families on the same lot, making it an ideal choice for densely populated urban areas.


Privacy: Each unit has its own entrance and living spaces, providing a level of privacy similar to single-family homes.


Cost-Efficiency: Shared construction costs for a duplex often make homeownership more affordable for families and individuals.


Rental Income: Duplex owners can generate rental income by leasing out one unit, helping offset mortgage costs.


Sustainability: Efficient use of land and shared walls contribute to a smaller environmental footprint.

Challenges in Duplex Housing

While duplex housing offers many advantages, it also presents certain challenges:

Energy Efficiency: Ensuring both units meet energy efficiency standards can be challenging, especially in older buildings.

Noise Control: Shared walls can lead to noise issues, requiring effective soundproofing.

Privacy Concerns: Balancing privacy for both units can be tricky, especially in layouts with shared spaces like gardens.

Construction Speed: Rapid construction is often essential in high-demand urban areas, and traditional construction methods may not meet timelines.

Environmental Impact: Traditional construction materials and methods can have a significant environmental impact.

Thermohouse Low energy Building System: The Solution

Thermohouse ICF is a revolutionary construction method that addresses many of the challenges associated with duplex housing in Ireland and the UK. It offers a range of benefits that make it an ideal choice for modern duplex construction:

  1. Energy Efficiency:

Thermohouse ICF provides outstanding thermal performance, ensuring both units in a duplex meet and exceed energy efficiency standards. The insulated concrete forms create a highly efficient building envelope, reducing heating and cooling costs for residents. This addresses one of the primary challenges in duplex housing: maintaining energy efficiency in shared walls.

  1. Noise Control:

ICF construction naturally offers excellent soundproofing properties. The solid, monolithic walls of Thermohouse ICF provide effective noise control, minimizing disturbances between units. Residents can enjoy a quieter, more peaceful living environment, enhancing the overall quality of life in a duplex.

  1. Privacy Solutions:

Thermohouse ICF construction allows for flexible and efficient design, addressing privacy concerns. Layouts can be customized to ensure separate entrances and living spaces for each unit, reducing privacy conflicts commonly associated with shared walls.

  1. Speed of Construction:

ICF construction is known for its rapid build times. This is particularly advantageous in high-demand urban areas where duplex construction needs to be completed quickly to meet housing demands. Thermohouse ICF streamlines the construction process, reducing delays and ensuring units are available for occupancy sooner.

  1. Environmental Sustainability:

ICF construction is inherently more sustainable than traditional building methods. Thermohouse ICF uses sustainable materials, minimizes waste, and promotes energy efficiency in the completed structure. This aligns with the growing emphasis on green building practices in both Ireland and the UK.

The Future

As the demand for housing in Ireland and the UK continues to grow, innovative solutions are needed to address the challenges of limited space, energy efficiency, and construction speed. Duplex housing, when combined with cutting-edge construction methods like Thermohouse ICF, presents a promising path forward. With its exceptional energy efficiency, noise control, privacy solutions, speed of construction, and sustainability, Thermohouse ICF is redefining the way duplexes are built, offering residents a modern and comfortable living experience while addressing the unique challenges of duplex housing in urban areas.

As the housing landscape evolves, Thermohouse low energy building system promises to deliver sustainable, efficient, and comfortable homes for residents in Ireland and the UK alike.

Get in touch with us for a free quote today:

Thermohouse Insulating Concrete Formwork (ICF) and low energy building solutions are sold throughout Europe within our network of professional and experienced business development partners.

We would love to hear about your upcoming project or answer any technical questions you may have.

To contact us please fill out our ‘contact form’ or call our office to speak to one of our technical sales advisers.

Thermohouse Support Network

Thermohouse has a complete support network, handling everything in your low energy building project from the on-site manufacture of the building system through to constructing your A-Rated home and a lot more in between. This ensures a cost efficient, streamlined and seamless process from the moment we take your call.



1 .Thermohouse offers complete in-house tech support, our technical and design office has industry professionals such as structural engineers, CAD technicians & estimators to assist with your project.


2 .We manufacture the entire low energy building system in our state of the art manufacturing facility in Killarney, Co. Kerry, Ireland.


3 .Our supply and install service is provided by our expert team & available for self build projects and developments throughout Ireland and the UK.


4 .Your A-Rated home, built to a very high standard is future-proof,  structurally sound and offers year-round warmth and comfort with minimal energy use.


View our brochure now to learn more key information about how Thermohouse is the best option for you:

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