A folding/expand house has a 20-year service life with a 15-year warranty on the structural frame and a 3-year warranty on details like faucets and windows. It is tested to withstand extreme winds of 56.3 m/s and rainfall of 202 mm/h without leaks. Warranty claims for parts are processed with 48-hour shipping. Coverage includes self-installation but excludes third-party modifications and improper foundation leveling.
When investing in a folding house or an expand house, durability is the ultimate metric of value. These units are often deployed in the world’s most challenging environments—from freezing disaster zones to high-wind construction sites. To provide peace of mind for long-term projects, our modular units are engineered for a 20-year service life, backed by a robust “15-3-3” warranty framework and industry-leading environmental resilience ratings.
The “20-15-3-3” Warranty Framework
We stand behind our engineering, whether your unit is installed by a professional team or via self-installation. Our warranty is structured to protect both the heavy-duty skeleton and the functional interior details.
1. 15-Year Structural Frame Warranty
The core galvanized steel frame is guaranteed for 15 years. This coverage applies even to self-installed units, provided the foundation is correctly leveled. It protects against structural failure and corrosive degradation.
2. 3-Year Overall & Detail Warranty
We provide a 3-year comprehensive warranty on the unit’s assembly and a specific 3-year warranty on high-touch components:
- Hardware & Fixtures: Faucets, plumbing, and cabinet hinges.
- Apertures: Windows and door mechanisms.
- Finishing: External wrapping and trimming parts.
3. Rapid Claim Support
In the event of a component failure, we commit to a 40-hour shipment for replacement parts, ensuring your project downtime is minimized.
Technical Specifications: Environmental Resilience Ratings
Our folding houses and expand houses have undergone extreme stress testing to ensure they exceed international safety standards.
| Test Category | Test Condition | Result |
| Extreme Wind Resistance | Max wind speed 56.3 m/s (Approx. 202 km/h) | Normal function; no structural damage |
| Heavy Rainfall/Leakage | 202 mm/h intensity | Zero leaks detected |
| Roof Load Capacity | 8㎡ tank, 60 cm water depth | No structural deformation |
| Thermal Insulation | -30°C External temperature | -7.9°C Internal (without active heating) |
| Operational Wind | 10 m/s wind speed | All components function normally |
Temperature Curve versus Time
Maintenance & Warranty Exclusions
To ensure your house reaches its full 20-year lifespan, we recommend simple periodic maintenance:
- Hinge Lubrication: Check and lubricate folding hinges annually to ensure smooth operation.
- Roof Seals: Inspect roof seals after extreme weather events to maintain watertight integrity.
Warranty Exclusions: Please note that coverage does not extend to:
- Damage caused by human error or accidental impact.
- Third-party modifications to the structural frame.
- Improper foundation leveling (a level base is critical for structural alignment).
Frequently Asked Questions (FAQ)
Q: Is the 15-year warranty valid if I install the house myself?
Yes. We designed our folding houses for rapid, easy deployment. As long as you follow the leveling guidelines, the 15-year structural frame warranty remains fully valid for self-installation.
Q: How does the house handle extreme cold?
Our testing shows that in a -30°C environment, the interior maintains a temperature of -7.9°C purely through passive insulation. This significantly reduces the energy load required for active heating systems.
Q: How fast can I get replacement parts?
We maintain a dedicated inventory of detail parts (faucets, hinges, seals). We guarantee shipment of replacement parts within 48 hours of claim verification.
The folding house and expand house are more than temporary shelters; they are durable, 20-year assets. By combining a 15-year frame warranty with verified resistance against 56.3 m/s winds and 202 mm/h rainfall, we provide a housing solution that is as reliable as it is portable.
