When a person decides to build their own home, one of the most important—and least understood—aspects is the choice of the construction system. We are not just talking about aesthetics, but about energy efficiency, comfort, durability, and cost. In this article, we analyze three of the most used systems in single-family homes in Spain: ETICS, thermo-clay, and cellular concrete, and we help you understand which one best suits your project.
What is a construction system?
It is the set of technical elements that form the structure and enclosures of a home. It directly affects the thermal and acoustic performance of the house, the execution time, subsequent maintenance, and, of course, the total budget for the work.
Choosing well from the beginning avoids cost overruns, future renovations, or habitability problems.
ETICS: External Thermal Insulation Composite System
ETICS (External Thermal Insulation Composite System) is not a structural material in itself, but a solution that significantly improves the thermal insulation of the building. It is applied over the exterior wall (regardless of the material) and is composed of insulation boards, mechanical fixings, meshes, and finishes.
Advantages – Reduces energy demand (heating and cooling) – Prevents thermal bridges – Improves acoustic performance – Can be applied in new construction or renovations – Customizable aesthetic finish
Considerations – Requires specialized installers – It does not replace the structural system – Slightly increases the execution cost, but it is amortized through energy savings
Who is it ideal for? For those seeking high energy efficiency and superior indoor comfort, especially in extreme climates or in high-performance energy-efficient homes.
Thermo-clay: Cellular Ceramic Brick
Thermo-clay is a large-format ceramic block that integrates structure and insulation. It is widely used in single-family homes for its balance between tradition and efficiency. Its cellular shape improves thermal resistance and reduces weight compared to a solid brick wall.
Advantages – Good thermal inertia – Natural and breathable material – Good acoustic performance – Fast construction thanks to the block format – Compatible with traditional exterior finishes
Considerations – Requires proper execution to avoid thermal bridges – Insulation can be improved by adding ETICS or interior wall linings – Lower insulation than other systems if used alone
Who is it ideal for? For self-builders looking for a reliable, traditional, and efficient solution without construction complications. Very common in rural areas or temperate climates.
Cellular Concrete: Lightweight Blocks with High Insulation
Cellular concrete (like Ytong) is a white, low-density block composed of cement, lime, sand, and incorporated air. It has excellent thermal properties and is very lightweight. Although not as well-known as thermo-clay, it is gaining more and more prominence in sustainable construction.
Advantages – Very good thermal insulation without needing additional layers – Fire-retardant, lightweight, and breathable material – Quick and easy assembly – Reduction of on-site waste – Good structural resistance
Considerations – Lower impact resistance than other materials – Requires special adhesives – May need reinforcement for point loads
Who is it ideal for? For those looking for a low-energy consumption home that is lightweight, quick to build, and uses modern materials. Especially useful for homes with Passivhaus standards or similar.
Which one to choose?
The choice depends on several factors: – Climate of the area – Available budget – Desired level of efficiency – Final aesthetics and finishes – Construction timeline – Local availability of materials and installers
At Maison d’Or, we analyze each case individually, taking into account the overall thermal performance of the building, the type of foundation, the orientation, and the cost-performance ratio.
Conclusion
There is no single ideal construction system, but there is a suitable option for every project. The important thing is not to be swayed only by trends or by the builder’s criteria without cross-checking. A well-built home is a long-term investment, both in quality of life and in energy savings.
If you are considering building your house from scratch and don’t know which system to choose, at Maison d’Or we advise you with complete transparency. We study your project, analyze the land, and propose the most efficient solution for your home.
