Subtil Conception builds a 260 m2 detached house in Fréthun (62) with ISObric® from Porotherm

The house, which stands out for its complex architecture and technical solutions, illustrates the optimal performance offered by the ISObric® brick from Porotherm, a Wienerberger brand.

An ambitious project with complex architectural challenges

This detached house stands out for its architectural design, characterized by suspended facades on the first floor. The upper floor is supported by a 1x40 cm tie beam hidden in the plenum inside the house, ensuring reinforced structural continuity and perfect integration between the exterior and interior load-bearing elements. In addition, the builder used Porotherm ISObric® for the entire masonry of the house as well as Porotherm brand accessories. Only the pool house, the pool machinery shelter and the 60 m30 outbuilding, which did not have specific thermal requirements, were made in Porotherm GF R2.

ISObric®: a high-performance and sustainable thermal solution

ISObric® is the first 20 cm thick brick with integrated insulation, combining thermal efficiency and ease of installation. Thanks to its three rows of cells filled with hydrophobic rock wool insulation, this brick offers a thermal resistance R = 2, twice that of a standard brick. This product achieves 30 to 45% of the wall's thermal performance, thus reducing heating requirements and ensuring optimal interior comfort, while meeting the strict requirements of RE2020.

Manufactured locally in France, ISObric® benefits from the advantages of terracotta solutions: a natural, healthy, and durable material that contributes to indoor air quality. It is also particularly resistant to fire and humidity, offering an impressive longevity of over 100 years.

Excellent thermal performance and maximized living space

Thus, the integration of ISObric® in this project made it possible to achieve remarkable thermal performance with an R = 5,35. The low thermal conductivity of rock wool (lambda of 31) ensures optimal insulation, while allowing a gain of 8 m2 of living space. Thanks to a reduction in the thickness of the interior lining, the living space is maximized while respecting the 2025 thresholds (Bbio max, Cep max, etc.) of the RE2020. In addition, the airtightness test gave an excellent result of 0,19, guaranteeing perfect control of the building's air permeability.

Consolidated expertise with more than thirty ISObric projects completed

Convinced by the many benefits offered by ISObric® bricks, Subtil Conception has chosen to adopt them exclusively for its single-family home projects. This decision reflects the company's commitment to delivering high-performance construction, combining thermal comfort, compliance with RE2020 standards, and optimization of living space. By opting for ISObric®, Subtil Conception ensures it meets its clients' expectations in terms of sustainability, energy efficiency, and architectural innovation.

For Guillaume Lefranc, manager of Subtil Conception: “After completing more than thirty projects with ISObric®, we have been able to measure its many advantages. Its ability to optimize living space while guaranteeing exceptional thermal performance makes it a valuable asset for our constructions, even in projects with complex architecture. The brand has also recently expanded the ISObric® product range with new accessories, such as insulated posts, which we now also use on all of our projects.”