An ambitious project, its objective is to test, develop and enrich integrated, innovative and replicable technical solutions to facilitate the large-scale deployment of the efficient global renovation of individual houses. The resources already produced for Renostandard are made available to renovation professionals on the website of the Profeel program.
From Renostandard to Restore: the works of the Profeel program dedicated to global renovation
The PROFEEL program, born in 2019 from the mobilization of 16 professional building organisations, has produced many innovative tools and resources for professionals and individuals to trigger and secure energy renovation work on buildings. RENOSTANDARD was one of the 9 projects in the first phase of the program, and one of the four supported by CSTB. It was carried out in collaboration with 9 groups of professionals bringing together craftsmen, architects, design offices, construction companies, manufacturers and even technical associations, supported by CSTB experts. The objective was to design standard solutions for global rehabilitation, adaptable and replicable, optimized for houses of similar construction present in large numbers in one or more territories (regional and national scales). With a strong focus on massification in terms of renovation, RENOSTANDARD's work is now continuing within the RESTORE project, for the 2022-2024 period, based on the resources and work already produced, in order to help professionals define and provide structured and reliable technical offers for high-performance renovation, in one or more stages.
Rénostandard: innovative integrated solutions
Prefabricated thermal insulation, new materials (including biosourced insulation, add example), reorganization of spaces to improve use... RENOSTANDARD has made it possible to bring out technical innovations adapted to the specificities (historical, constructive, architectural context, etc.), qualities and defects of several typologies of standardized houses. He took the first steps in the technical feasibility of new solutions, processes and tools.
This work resulted in 11 overall renovation concepts, each associated with a type of house (suburban pavilion between the two wars, Longère in a rural environment, etc.), presented in summary sheets and short video interviews with the design groups. .
Each project offered one or more whole-house-scale renovation approaches and also incorporated technical innovations at the lot-scale. In particular, they include new off-site prefabricated solutions to reduce worksite completion times as well as innovations for the treatment of interfaces.
In addition, a report brings together the main lessons on the innovative thermal insulation solutions developed by the 9 design groups. It brings together recommendations of principles made by some twenty CSTB experts.
Digital tools have also been produced as part of the project, in particular an online cross-functional diagnostic tool, intended for renovation support professionals. Available for free, it allows professionals visiting the home owner to make him aware of the qualities and faults of his home to help him better understand all the benefits of an efficient renovation, beyond the only energy savings. This digitized diagnostic protocol is therefore both centered on the inhabitant and his expectations and needs, but also on the overall design of his dwelling with its advantages and constraints. This RENOSTANDARD approach of supporting individuals towards global renovation has been tested by URBANIS with around a hundred owners in 25 departments. It also made it possible to initiate the development (still in progress) of a projection tool for owners to allow them to visualize the before/after of their renovation project, with one ambition: to encourage decision-making begin a renovation process.
RENOSTANDARD tools are therefore aimed at a wide variety of professionals: craftsmen, construction companies, manufacturers of new solutions, project managers and renovation guides. They are available on the PROFEEL website: Réno Standard, a project resulting from the PROFEEL program.
Restore: test and enrich global renovation solutions in the territories
Within the 8 projects of the 2nd phase of the PROFEEL program (2022-2024, 37,7 M€), RESTORE has a budget of 6,7 million euros.
For Olivier Greslou, Director of the RESTORE Project: “RESTORE is an ambitious project that will allow us to continue and enrich the work carried out on RENOSTANDARD. The challenge is to develop and make reliable in the field integrated technical offers, efficient and replicable on a large scale, in order to stimulate the deployment of efficient renovation of single-family homes in several territories. These offers would make it possible to propose ambitious renovations, carried out by groups of companies, on the basis of controlled techniques and processes adapted to the specificities of the houses. »
The project is divided into 4 operational axes.
Pilot projects to test the solutions
One of the axes of RESTORE is to test the renovation solutions developed in RENOSTANDARD in the field and to confirm their field of application through pilot sites, in order to assess their effective performance in real conditions, their implementation constraints work and their potential for massification. The identification of the first construction sites corresponding to typologies of standardized individual houses which present strong renovation challenges such as: the "Maison du nord" (Town house in brick, semi-detached or semi-detached), the "Pavillon à fermettes" in Normandy (with a framework of industrial farmhouses) or even the “Maison de première Couronne (50s-60s)” (compact Reconstruction house with a 4-sided roof) has already started. The objective is to initiate the design of the projects in the first half of 2023 and to be able to start construction sites in 2023. In total, a dozen construction sites will be launched between 2023 and 2024 for 3 to 5 typologies which represent 10% of the housing stock. individual homes in France, i.e. 2 million homes. Once the works have been completed, the performance and durability of the renovations carried out will be assessed, as well as the potential gains in terms of costs, work time, ease of implementation and improvement in the quality of life of the occupants.
Explore new avenues to facilitate massification
Beyond the prism of house typology, the RESTORE project aims to broaden the research initiated in RENOSTANDARD into new technical solutions and multi-lot approaches to facilitate and promote overall performance in the renovation of individual houses: efficient renovation in stages, interfaces or low-tech, for example. Solutions to be imagined in order to be able to cover 50% of the stock of individual houses (i.e. around 10 million houses).
Facilitate the structuring of local global renovation sectors
One of the challenges of the RESTORE project is to be able to distribute and deploy new technical offers on a territorial scale. So that a large number of professionals can appropriate these offers to design and carry out future projects, PROFEEL wishes to rely on several local relays of the approach: the groups of professionals who have collaborated in the RENOSTANDARD project as well as local authorities partners, in interaction with local and regional networks. The development of partnerships with these communities, to support them in their renovation policies, is an important axis for structuring renovation in their territories. For example, the Métropole de Lille is already involved in the RESTORE experiment which will be carried out on several pilot sites supervised by La Fabrique des Quartiers during the course of 2024.
Develop a global digital tool to facilitate diagnosis and decision-making
One of the other objectives of RESTORE is to be able, on the basis of the transverse diagnostic tool of RENOSTANDARD, to develop an operational and "turnkey" digital tool intended for professionals in the diagnosis and support for renovation . The latter would facilitate the realization of a global diagnosis of the house and the interaction with the client to define the main orientations of his renovation project. It could be linked to the BDNB (National Buildings Database) in order to enrich the diagnosis and analysis of housing performance.