cellulose insulation , the ally of off-site construction
The specific requirements of off-site construction
Compatibility with prefabrication in the workshop
Off-site construction involves manufacturing components in a workshop before assembling them on site. To be effective, materials must:
- can be easily stored and handled in an industrial environment,
- be implemented in a repeatable and reliable manner,
- deliver consistent quality regardless of the operator or weather conditions.
CEREMA highlights the importance of standardized industrial materials in reducing performance variations between construction sites and designs.
Performance and reliability over time
In a context where RE2020 requires better energy performance and consistency between calculations and actual performance, the stability of the thermal characteristics of insulation materials is a critical issue.
Why cellulose insulation particularly suitable for off-site construction?
A loose-fill insulation that can be adapted to any size
Unlike rigid panels or rolls, cellulose insulation be blown or sprayed to fit the exact shape of the walls, without cutting or wasting material. This adaptability is particularly useful in prefabricated walls, floors, or attics.
Continuity of insulation and limitation of thermal bridges
Studies conducted by the CSTB show that the homogeneity of the insulation and the absence of empty or poorly filled areas help to limit thermal bridges, which is essential for meeting the requirements of RE2020 and regulatory thermal calculations.
Compatibility with complex and industrialized walls
A solution designed for professionals
One product for multiple applications
cellulose insulation can be used for prefabricated walls, floors, and roofs, simplifying purchasing, inventory management, and internal logistics for prefabrication workshops.
Optimized logistics, storage, and transportation
When packaged appropriately, cellulose insulation takes up less space while providing equivalent insulation, which reduces:
- transport rotations,
- logistics costs,
- the storage space required in the workshop.
Zero insulation waste
Unlike panels or rolls, which generate waste when cut, cellulose insulation perfectly to the geometry of prefabricated elements.
Waste reduction is also encouraged byADEME as a lever for environmental performance and the circular economy.
Thermal performance & regulatory compliance
Thermal performance and phase shift
Beyond thermal resistance, cellulose insulation favorable thermal phase shift capacity, which improves summer comfort by storing and releasing heat less quickly than very lightweight insulation materials. This characteristic helps meet the summer comfort indicators introduced by RE2020.
Contribution to RE2020 requirements
When used in conjunction with workshop installation, cellulose insulation achieve the required levels of thermal performance, envelope continuity, and consistency with the bioclimatic requirements set out in the regulations.
Economic & operational benefits for off-site projects
Reduced implementation times
Integrating insulation in the workshop avoids lengthy and delicate operations on site. This reduces the overall duration of the operation, minimizes the number of trades involved, and reduces the risk of delays due to execution errors.
Reduction in indirect costs
By minimizing rework, errors, and waste, cellulose insulation helps control indirect costs that are often difficult to quantify but very real in projects (construction site expenses, supervision time, etc.).
Use cases and types of compatible projects
cellulose insulation is suitable for many types of off-site construction projects:
- Multi-unit housing: walls insulated in the workshop;
- Single-family homes: prefabricated 2D/3D solutions;
- Commercial buildings: stricter thermal and acoustic requirements;
- Extensions/elevations: easy integration with prefabricated walls.
Conclusion: insulation aligned with the industrial logic of off-site construction
cellulose insulation combines the qualities needed to meet the technical, economic, and environmental requirements of modern off-site construction.
Its flexibility of use, thermal performance, and compatibility with industrial processes make it a natural ally for ensuring the overall quality and performance of projects.
To learn more about this topic, discover all the advantages of off-site construction, particularly in terms of meeting RE2020 requirements, and the role ofinsulation in off-site construction.
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