Is your home threatened by cracks?
TerraStab continuously monitors and stabilizes your soil to protect your home from clay shrink-swell subsidence (RGA).
Avoid costly repairs and protect the value of your property.
TerraStab changes the game.
Thanks to a groundbreaking technological approach,
stabilizing a building's soil is no longer limited to heavy construction work.
Our solution opens a new path, accessible, precise and durable.
Technology
Precision
Accessibility
Durability
All the solutions against RGA
There are several ways to fight clay shrink-swell subsidence. Every situation is different. Here's an objective comparison to help you choose.
The most affordable and least invasive.
Smart soil moisture regulation via connected sensors + irrigation stakes. Maintains stable moisture around the foundations, eliminating shrink-swell cycles.
Pros
- The most affordable
- Non-invasive — no major works
- Treats the cause: regulates soil moisture
- Connected: real-time monitoring
- Preventive and curative
Cons
- Not yet deployable on deep foundations
- 3G connectivity required
Invasiveness
Effectiveness
Connected technology, designed to prevent and correct the effects of RGA.
TerraStab installs shallow-anchored probes around the house, connected to a smart irrigation system, itself linked to our servers. Driven by a proprietary algorithm, the system triggers targeted water inputs that keep the clay at a stable moisture level — essential to prevent cracks or stop them from worsening.
Hydro-stabilization is a solution based on unsaturated soil mechanics, an established scientific discipline.
International scientific literature has highlighted the central role of moisture in clay stability. TerraStab draws on this published knowledge to offer a practical application for homeowners.
How does it work?
Connected geotechnical analysis
Satellite data, RGA maps, algorithmic modeling: we assess how the clay behaves on your property.
Hygrometric probe installation
Patented probes, discreet and integrated into the home's surroundings, installed up to 1.20 m deep. No heavy works, no foundation rework.
Smart automated hydro-stabilization
The system adjusts soil moisture in real time, based on measured conditions, to durably stabilize the structure.
Preventive
Prevents the first signs from appearing (cracks, misalignments). Ideal before any damage occurs.
Corrective
Stabilizes homes already affected, limits worsening, avoids heavy and costly works.
Connected geotechnical analysis
Hygrometric probe installation
Smart automated hydro-stabilization
Preventive
Corrective
A project backed by institutions that matter.
TerraStab is supported by public and regional bodies committed to innovation, sustainable housing and climate resilience. This support strengthens our independence, our ambition, and our ability to deploy the solution wherever it's needed.
These partnerships reflect the soundness and viability of the TerraStab project, as well as its potential for positive impact on French housing.
Clay doesn't stabilize itself.
Neither does your home.
Droughts are getting longer, more frequent, and more intense.
This mechanically worsens the shrink-swell phenomenon — year after year.
Stabilizing now means avoiding heavy repairs… and lasting devaluation.
1 in 2 homes
in clay-rich areas affected by 2030
Up to 30%
of property value can be lost
Every year
the risk worsens with climate change
Frequently asked questions
All the answers to the essential questions to understand TerraStab and make the right choice for your home.
Continuous monitoring for optimal effectiveness.
Once installed, your TerraStab system is monitored in real time. You benefit from 24/7 remote monitoring, regular reports on how your land is evolving, and immediate alerts in case of anomaly. Our technical team adjusts the settings to maintain optimal protection all year round.
Clay shrink-swell subsidence news
Analysis, data and advice published by the TerraStab team.
RGA et patrimoine : quand l'argile fragilise les fondations historiques françaises
Le retrait-gonflement des argiles ne se limite plus aux constructions récentes. Les propriétés d'exception et le bâti ancien, avec leurs fondations souvent moins profondes, sont désormais en première ligne face à ce risque climatique. Une vulnérabilité qui bouscule l'évaluation des biens et la couverture assurantielle.
RGA 2026 : Nouvelle carte, coûts en hausse et aides transformées face au risque argile
La France est confrontée à une nouvelle réalité du risque retrait-gonflement des argiles (RGA) en 2026. Une carte réactualisée et une révision des conditions d'indemnisation modifient profondément le paysage pour les propriétaires.
RGA : La sécheresse est désormais le risque CatNat n°1 pour les maisons françaises
Le rapport annuel de la CCR confirme un fait majeur : le retrait-gonflement des argiles lié à la sécheresse est devenu le premier poste de sinistralité pour le régime CatNat. Un tournant qui interpelle sur l'avenir de nos maisons et la nécessité de la prévention.
RGA et Tribunaux : ce que dit la jurisprudence sur la 'Causalité Adéquate'
Deux tribunaux judiciaires précisent comment la 'causalité adéquate' est examinée dans les dossiers RGA, et quels postes de préjudice peuvent être pris en compte.
Sécheresse estivale 2026 : sols assoiffés, nappes en baisse — et des millions de maisons en argile qui bougent
Le Monde documente la trajectoire de la sécheresse 2026 : sols à des niveaux d'humidité records, nappes en baisse, Garonne à l'étiage. Pour les 12 millions de maisons en zone argileuse, c'est la saison la plus redoutée — et elle commence tôt.
TerraStab dans la presse — Le Figaro Immobilier, TerraStab expertise RGA
Le Figaro Immobilier a cité TerraStab et son fondateur Philippe Isselin dans un article sur les maisons fissurées par la sécheresse et la responsabilité juridique du propriétaire. Une reconnaissance de plus pour l'expert RGA.
Let's talk about your project
A TerraStab expert reviews your situation and gets back to you within 24h.
Contact us directly
contact@terrastab.fr
Response within 24h — we review every request carefully, even complex cases.
No obligation — free diagnosis, free quote, no sales pressure.