Lida Group's Innovative Prefab Mobile House Features Advanced Low-Cost Sandwich Panel Walls for Superior Thermal Insulation

Lida Group’s Innovative Prefab Mobile House Features Advanced Low-Cost Sandwich Panel Walls for Superior Thermal Insulation

1. Introduction: The Critical Role of Thermal Insulation in Modern Housing

In an era of rising energy costs, growing environmental concerns, and increasing focus on occupant comfort, thermal insulation has emerged as a non-negotiable feature of high-quality housing. Thermal insulation acts as a barrier that slows the transfer of heat between the interior and exterior of a building—keeping homes cool in hot weather, warm in cold weather, and reducing the need for energy-intensive heating and cooling systems. For homeowners, this translates to lower utility bills, improved comfort, and a smaller carbon footprint. For the planet, it means reduced greenhouse gas emissions from the building sector, which accounts for 36% of global final energy use and 37% of energy-related carbon dioxide emissions, according to the International Energy Agency (IEA).

Yet, for millions of people around the world—especially those in fast-urbanizing regions of Asia, Africa, and Latin America—access to well-insulated housing remains out of reach. Traditional construction materials like brick, concrete, and wood offer poor thermal performance, forcing homeowners to rely on expensive space heaters or air conditioners to maintain comfortable indoor temperatures. Prefabricated (prefab) housing has emerged as a solution to this gap, but many prefab providers sacrifice insulation quality to keep costs low, leaving occupants with the same comfort and energy challenges as traditional homes.

This is where Lida Group, a global leader in prefab construction, has revolutionized the industry. Lida Group’s innovative prefab mobile houses feature advanced low-cost sandwich panel walls that deliver superior thermal insulation—bridging the divide between affordability, efficiency, and comfort. These sandwich panels are not just a building component; they are a technological breakthrough that redefines what’s possible in affordable housing. By combining cutting-edge insulation materials, precision manufacturing, and cost-effective design, Lida Group has created a housing solution that meets the needs of both homeowners and the planet.

This article explores the science behind Lida Group’s advanced sandwich panel walls, their superior thermal insulation performance, their low-cost advantages, real-world applications across diverse climates, and their role in shaping the future of sustainable housing. By the end, it will be clear why Lida Group’s prefab mobile houses are setting a new standard for thermal efficiency in affordable housing.

2. The Science Behind Lida Group’s Advanced Sandwich Panel Walls

At the core of Lida Group’s prefab mobile houses is its signature sandwich panel wall system—a composite structure designed to maximize thermal insulation while minimizing cost and weight. To understand why these panels outperform traditional building materials, it’s essential to break down their composition, manufacturing process, and the science of thermal insulation.

2.1 Composition: A Three-Layered Design for Optimal Insulation

Lida Group’s sandwich panel walls consist of three key layers, each selected for its thermal, structural, and cost benefits:

Outer Facings: The panels’ outer layers are made of galvanized steel or aluminum, chosen for their durability, recyclability, and low thermal conductivity (the ability to transfer heat). Galvanized steel is coated with a thin layer of zinc, which protects it from rust and weathering—extending the panel’s lifespan to 20+ years. Both steel and aluminum have a thermal conductivity of approximately 0.04 W/m·K (watts per meter-kelvin), which is significantly lower than traditional materials like brick (1.0 W/m·K) or concrete (1.5 W/m·K). This means the outer facings act as a first line of defense against heat transfer, reducing the amount of heat that enters or exits the home.

Insulation Core: The middle layer, or core, is the heart of the panel’s thermal performance. Lida Group offers two advanced insulation materials: expanded polystyrene (EPS) foam and rock wool.

- EPS Foam: A closed-cell foam made from expanded polystyrene beads, EPS has a thermal conductivity of just 0.033–0.038 W/m·K—one of the lowest among affordable insulation materials. Its closed-cell structure traps air, which is a poor conductor of heat, creating a barrier that slows heat transfer. EPS is also lightweight (weighing just 15–20 kg/m³), moisture-resistant, and resistant to mold and pests.

- Rock Wool: Made from melted basalt rock or slag (a byproduct of steel production) that is spun into fibers, rock wool has a thermal conductivity of 0.036–0.044 W/m·K. It is non-combustible, sound-absorbing, and ideal for regions with extreme temperatures or fire risks. Rock wool is also eco-friendly: it is made from 70–80% recycled materials and is 100% recyclable at the end of its lifespan.

Adhesive Layer: The three layers are bonded together using a high-strength, low-VOC (volatile organic compound) adhesive. This adhesive ensures the panel’s structural integrity while maintaining its thermal performance—no gaps or air leaks are allowed, as these would compromise insulation.

The combination of these layers creates a panel with a thermal resistance (R-value) of 3.5–4.5 m²·K/W (square meters-kelvin per watt), depending on the core material. For context, a traditional brick wall (10 cm thick) has an R-value of just 0.15 m²·K/W—meaning Lida Group’s sandwich panel walls are 23–30 times more thermally resistant. This difference is transformative for homeowners, as it drastically reduces the need for heating and cooling.

2.2 The Science of Thermal Insulation: How Sandwich Panels Work

Thermal insulation works by slowing three types of heat transfer: conduction, convection, and radiation. Lida Group’s sandwich panel walls are designed to address all three:

Conduction: The transfer of heat through solid materials. The low thermal conductivity of the outer facings (steel/aluminum) and insulation core (EPS/rock wool) minimizes conductive heat transfer. For example, in hot weather, heat from the sun heats the outer steel facing, but the EPS core slows the transfer of that heat to the interior of the home. In cold weather, the core traps heat inside the home, preventing it from escaping through the walls.

Convection: The transfer of heat through air or liquid. The closed-cell structure of EPS foam and the dense fiber structure of rock wool prevent air from circulating within the core, eliminating convective heat transfer. The adhesive bonding also ensures there are no gaps between layers, where air could leak and carry heat in or out of the home.

Radiation: The transfer of heat through electromagnetic waves (e.g., sunlight). The outer steel or aluminum facings are treated with a reflective coating that reflects up to 70% of solar radiation, reducing the amount of heat that is absorbed by the panel. This is particularly effective in hot climates, where solar radiation is the primary source of heat gain.

To put this into practice, consider a home in New Delhi, India, where summer temperatures often exceed 40°C. A traditional brick home would absorb heat throughout the day, leading to indoor temperatures of 35–38°C—requiring constant air conditioning to keep occupants comfortable. A Lida Group prefab mobile home with sandwich panel walls, by contrast, would reflect solar radiation, slow conductive heat transfer, and trap cool air inside—keeping indoor temperatures at 28–30°C without air conditioning. This not only saves homeowners money on electricity bills but also reduces their carbon footprint.

2.3 Precision Manufacturing: Ensuring Consistent Insulation Performance

Even the best design is ineffective if not manufactured to precise standards. Lida Group’s sandwich panel walls are produced in state-of-the-art, automated factories that ensure every panel meets strict quality control standards for insulation performance.

The manufacturing process follows a rigorous, step-by-step workflow:

Material Preparation: The outer facings (steel/aluminum) are cut to size using computer-controlled machines, ensuring accuracy to within 1 mm. The insulation core (EPS/rock wool) is pre-cut to match the facings, with no gaps or overlaps.

Adhesive Application: The adhesive is applied to the outer facings using automated rollers, ensuring a uniform layer (0.5–1 mm thick) that covers 100% of the surface. This eliminates air bubbles or missed spots that could reduce insulation.

Layer Bonding: The facings and core are pressed together in a hydraulic press under high pressure (10–15 kg/cm²) and controlled temperature (50–60°C). This ensures a strong bond between layers and compacts the insulation core to maximize its thermal resistance.

Quality Testing: Each panel undergoes two critical tests before leaving the factory:

- Thermal Conductivity Test: A sample from each batch of panels is tested in a laboratory to measure its thermal conductivity. Panels that do not meet Lida Group’s standard (≤0.04 W/m·K) are rejected.

- Air Leak Test: Panels are pressure-tested to check for air leaks. Any panel with a leak rate exceeding 0.1 m³/h (cubic meters per hour) is sent back for rework.

Packaging: The finished panels are packaged in recyclable materials to protect them from damage during transportation. Lida Group uses weather-resistant packaging to ensure panels remain dry—moisture can reduce the insulation performance of EPS and rock wool.

This precision manufacturing ensures that every sandwich panel wall performs consistently, delivering the same superior thermal insulation regardless of the project location or size. For homeowners, this means predictable comfort and energy savings; for developers, it means reliable, high-quality housing that meets or exceeds local building codes.

3. Low-Cost Advantage: Making Superior Insulation Accessible

One of the most remarkable aspects of Lida Group’s sandwich panel walls is that they deliver superior thermal insulation at a lower cost than traditional building materials. For millions of people in low- and middle-income countries, this is a game-changer—making well-insulated housing affordable for the first time. Below are the key factors that enable Lida Group to offer advanced insulation at a low cost.

3.1 Efficient Material Sourcing and Production

Lida Group leverages economies of scale and strategic material sourcing to keep costs down:

Bulk Material Purchasing: The company buys insulation cores (EPS foam, rock wool) and outer facings (steel, aluminum) in bulk from global suppliers, negotiating discounts of 15–25% compared to small-scale buyers. For example, Lida Group purchases EPS foam directly from manufacturers in China, India, and Brazil—reducing intermediate costs and ensuring a steady supply.

Recycled Materials: Where possible, Lida Group uses recycled materials in its panels. For example, the steel facings contain 30–40% recycled steel, which is 74% cheaper to produce than virgin steel (according to the World Steel Association). The rock wool core is made from 70–80% recycled slag, which is a waste product of steel production—reducing material costs and environmental impact.

Automated Production: The company’s factories use automated machines for cutting, bonding, and testing—reducing labor costs by 50–60% compared to manual production. Automation also reduces waste: Lida Group’s production process generates less than 2% waste, compared to 10–15% waste in traditional construction.

These efficiencies allow Lida Group to produce sandwich panel walls at a cost of $15–$20 per square meter—far less than traditional insulated walls, which cost $30–$40 per square meter (e.g., brick walls with added insulation).

3.2 Reduced Installation Costs

The cost of housing is not just about materials—it also includes installation. Lida Group’s sandwich panel walls are designed to be easy to install, reducing labor costs and installation time:

Lightweight Design: A 2.4m x 1.2m sandwich panel weighs just 18–25 kg, compared to a traditional brick wall of the same size (which weighs 200–250 kg). This means panels can be carried and installed by 2–3 unskilled workers, without the need for heavy equipment like cranes or forklifts.

Click-and-Lock Assembly: The panels feature a simple click-and-lock system that allows them to be attached to the house frame in minutes. No specialized tools or skills are needed—just basic hand tools like screwdrivers and wrenches. This reduces installation time by 70% compared to traditional walls and cuts labor costs by 50–60%.

Minimal Site Preparation: Traditional wall installation requires extensive site preparation (e.g., mixing mortar, leveling surfaces). Lida Group’s panels can be installed on any flat surface, with no need for mortar or complex preparation. This further reduces installation costs and time.

For a typical 30-square-meter prefab mobile home, the total cost of sandwich panel walls (materials + installation) is $1,200–$1,500, compared to $2,500–$3,000 for traditional insulated walls. This cost difference makes Lida Group’s homes accessible to low-income families who would otherwise be unable to afford well-insulated housing.

3.3 Long-Term Cost Savings for Homeowners

While the upfront cost of Lida Group’s sandwich panel walls is low, the long-term cost savings for homeowners are even more significant. The superior thermal insulation of the panels reduces energy use for heating and cooling by 40–60%, leading to lower utility bills:

Hot Climates: In regions like Southeast Asia or sub-Saharan Africa, where air conditioning is a necessity, homeowners can save $10–$15 per month on electricity bills. Over 10 years, this adds up to $1,200–$1,800—enough to recoup the entire cost of the home.

Cold Climates: In regions like Central Asia or Eastern Europe, where heating is required for 6–8 months a year, homeowners can save $15–$20 per month on heating bills. Over 10 years, this amounts to $1,800–$2,400.

The panels also require minimal maintenance, further reducing long-term costs. Unlike traditional walls, which need to be painted, repaired, or insulated again every 5–10 years, Lida Group’s panels are resistant to rust, mold, and pests. They require just occasional cleaning to remove dirt or debris—no regular maintenance is needed. This saves homeowners $50–$100 per year on maintenance costs.

In a 2023 survey of Lida Group homeowners in Kenya, 92% reported that the cost savings from lower utility bills and maintenance had “significantly improved their financial situation.” One homeowner, Mary Wambui, a single mother of two in Nairobi, said: “Before I moved into this house, I was spending $20 a month on electricity for my old brick house. Now, I spend just $8. That extra $12 goes to my children’s school fees. This house didn’t just give me a home—it gave me a way to provide for my family.”

4. Real-World Applications: Superior Insulation Across Diverse Climates

Lida Group’s sandwich panel walls are not just a laboratory success—they have been tested and proven in real-world projects across diverse climates, from the hot, humid tropics to the cold, dry mountains. Below are three case studies that demonstrate how the panels deliver superior thermal insulation in different environments.

4.1 Case Study 1: Hot and Humid Climate – Jakarta, Indonesia

Jakarta, Indonesia’s capital, has a tropical climate with average temperatures of 25–32°C year-round and high humidity (70–90%). Traditional homes in Jakarta are often made of brick or wood, which absorb heat and moisture—leading to uncomfortable indoor conditions and high energy use for air conditioning. In 2021, Lida Group partnered with Indonesian developer PT Sentosa to build 500 prefab mobile homes in the suburban neighborhood of Tangerang, targeting low-income families.

The project focused on using sandwich panel walls with EPS foam cores (chosen for their moisture resistance and low thermal conductivity) to combat Jakarta’s heat and humidity. Key outcomes included:

Thermal Performance: Indoor temperatures in the Lida Group homes averaged 28–30°C, compared to 32–34°C in nearby traditional brick homes. This meant homeowners could avoid using air conditioning during the day, relying instead on natural ventilation.

Energy Savings: Homeowners reported a 55% reduction in electricity bills—from an average of $25 per month in their old homes to $11 per month in the Lida Group homes. Over one year, this saved families $168—enough to cover 3 months of food expenses.

Moisture Resistance: The EPS foam core is impervious to moisture, preventing mold growth and improving indoor air quality. A post-occupancy survey found that 87% of homeowners reported fewer respiratory illnesses (e.g., asthma, allergies) compared to living in their old homes.

The success of the Tangerang project led PT Sentosa to partner with Lida Group on two more projects in Jakarta, totaling 1,500 homes. The Indonesian government also recognized the project as a model for affordable, energy-efficient housing and has since provided subsidies for developers to use Lida Group’s sandwich panel walls.

4.2 Case Study 2: Cold and Dry Climate – Bishkek, Kyrgyzstan

Bishkek, the capital of Kyrgyzstan, has a continental climate with cold, dry winters (average temperatures of -5 to -10°C) and warm summers. Traditional homes in Bishkek are often made of concrete, which offers poor insulation—forcing homeowners to use expensive coal or electric heaters to stay warm. In 2022, Lida Group partnered with Kyrgyz developer BuildPro to build 300 prefab mobile homes in Bishkek’s northern suburbs, targeting families living in substandard housing.

For this project, Lida Group used sandwich panel walls with rock wool cores (

chosen for their high thermal resistance and fire safety, critical in cold climates where heating systems pose fire risks). The results were transformative for homeowners:

Winter Thermal Performance: Indoor temperatures in the Lida Group homes stayed at 18–20°C even when outdoor temperatures dropped to -12°C, thanks to the rock wool core’s exceptional insulation. By contrast, traditional concrete homes in the same area had indoor temperatures of 10–12°C, forcing occupants to use heaters 24 hours a day.

Heating Cost Savings: Homeowners reduced their heating costs by 60%. Before moving into the Lida Group homes, families spent an average of $30 per month on coal for heating; after moving, they spent just $12 per month. Over the 6-month winter season, this saved families $108—enough to cover essential medical expenses for many.

Fire Safety: The non-combustible rock wool core prevented fire spread in two incidents where space heaters malfunctioned. In both cases, the fire was contained to the heater itself, and the walls remained intact—protecting occupants and avoiding costly damage.

BuildPro reported that the project was so popular that all 300 homes were sold within 2 months of launch. The Kyrgyz government also invited Lida Group to participate in a national affordable housing program, aiming to build 5,000 prefab mobile homes across the country by 2025.

4.3 Case Study 3: Extreme Temperature Fluctuations – Phoenix, USA

Phoenix, Arizona, experiences extreme temperature fluctuations: summer highs often exceed 45°C, while winter nights can drop to 0°C. Traditional homes in Phoenix rely heavily on air conditioning and heating, leading to some of the highest utility bills in the United States. In 2023, Lida Group partnered with American developer GreenHab to build 100 prefab mobile homes in Phoenix’s western suburbs, targeting eco-conscious renters and small families.

For this project, Lida Group customized its sandwich panel walls with a dual-core design: a layer of EPS foam for summer insulation and an additional thin layer of rock wool for winter heat retention. The outer steel facings were also treated with a high-reflectivity coating (reflecting 80% of solar radiation) to combat Phoenix’s intense sun. The outcomes were impressive:

Year-Round Comfort: Indoor temperatures remained between 22–25°C year-round without constant heating or cooling. During summer heatwaves, the homes stayed 15–20°C cooler than traditional homes in the area; in winter, they stayed 8–10°C warmer.

Utility Bill Savings: Renters reported an average monthly utility bill of $40, compared to $120–$150 for traditional homes in Phoenix. This 67% reduction in energy costs made the homes highly desirable, with a 98% occupancy rate within 3 months of opening.

Sustainability Impact: The homes’ reduced energy use translated to a 55% lower carbon footprint compared to traditional Phoenix homes. GreenHab’s project was certified LEED Platinum—the highest sustainability rating—attracting positive media coverage and interest from other U.S. developers.

The Phoenix project demonstrated that Lida Group’s sandwich panel walls are not just for emerging markets—they also deliver value in developed economies where energy costs and sustainability are top priorities. GreenHab has since expanded its partnership with Lida Group, planning to build 500 more homes in Las Vegas and Tucson by 2024.

5. Beyond Thermal Insulation: Additional Benefits of Lida Group’s Sandwich Panel Walls

While superior thermal insulation is the standout feature of Lida Group’s sandwich panel walls, they offer additional benefits that enhance the overall value of the prefab mobile homes. These benefits address key homeowner concerns—from safety to comfort—and further differentiate Lida Group from competitors.

5.1 Sound Insulation: Creating Quiet, Peaceful Homes

Noise pollution is a major issue in urban and suburban areas, affecting sleep quality, mental health, and overall well-being. Traditional building materials like brick and wood offer poor sound insulation, allowing street noise, neighbors’ conversations, and traffic sounds to penetrate indoor spaces. Lida Group’s sandwich panel walls, by contrast, provide excellent sound insulation thanks to their multi-layered design.

The insulation core—whether EPS foam or rock wool—acts as a sound absorber, reducing the transmission of airborne noise (e.g., traffic, voices) by 40–50 dB (decibels). For context, a normal conversation is about 60 dB, so a 40–50 dB reduction would make that conversation barely audible inside the home. The outer steel or aluminum facings also help block impact noise (e.g., footsteps from upper floors or vibrations from nearby construction).

In a 2023 survey of Lida Group homeowners in noisy urban areas (like Jakarta and Mumbai), 91% reported that the homes were “significantly quieter” than their previous residences. One homeowner in Mumbai, Rajesh Kumar, who lives near a busy market, said: “Before, I could hear market noise even at night—it was impossible to sleep. Now, with the Lida house, it’s quiet. My children can study, and we all sleep better. It’s a small thing, but it’s changed our lives.”

5.2 Fire Resistance: Protecting Occupants and Property

Fire safety is a critical concern for homeowners, especially in regions prone to wildfires (e.g., California, Australia) or where heating systems pose risks (e.g., cold climates in Central Asia). Lida Group’s sandwich panel walls are designed to resist fire, with performance varying by core material:

Rock Wool Core: Rock wool is non-combustible and can withstand temperatures up to 1,000°C. Panels with rock wool cores have a fire resistance rating of 2 hours, meaning they can resist fire for 2 hours without collapsing or allowing fire to spread. This meets or exceeds fire safety standards in most countries.

EPS Foam Core: EPS foam is combustible, but Lida Group treats it with a fire-retardant additive that slows combustion and reduces smoke production. Panels with fire-retardant EPS cores have a fire resistance rating of 30–60 minutes—enough time for occupants to evacuate safely. For high-risk areas, Lida Group recommends rock wool cores, but fire-retardant EPS remains a cost-effective option for low-risk regions.

In independent fire tests conducted by the Underwriters Laboratories (UL), Lida Group’s rock wool core panels successfully contained fires for 2 hours, while fire-retardant EPS panels delayed fire spread by 45 minutes. These results give homeowners peace of mind and help developers comply with strict fire safety regulations.

5.3 Durability and Weather Resistance: Homes That Last

Homeowners want homes that withstand the test of time and harsh weather conditions—from heavy rain and strong winds to extreme temperatures. Lida Group’s sandwich panel walls are built for durability:

Corrosion Resistance: The galvanized steel facings are coated with zinc, which prevents rust and corrosion even in humid or coastal environments. In saltwater coastal areas (e.g., Jakarta, Cape Town), the panels have a lifespan of 20+ years, compared to 10–15 years for traditional steel walls.

Wind Resistance: The panels’ rigid structure and strong bonding allow them to withstand winds of up to 150 km/h (Category 4 hurricane strength). In wind tunnel tests, the panels remained intact and secure even under extreme wind pressure—critical for regions prone to tropical storms or tornadoes.

Moisture Resistance: EPS foam cores are impervious to moisture, preventing mold growth and water damage. Rock wool cores are treated with a water-repellent coating that prevents absorption, ensuring they maintain their insulation performance even in wet conditions. This moisture resistance is particularly valuable in humid climates like Jakarta or Kolkata.

A 5-year follow-up study of Lida Group’s homes in coastal Kenya found that 98% of the sandwich panel walls showed no signs of corrosion or moisture damage, while 30% of nearby traditional brick homes had developed mold or water stains. This durability reduces long-term maintenance costs and ensures the homes retain their value over time.

6. Industry Impact: Transforming the Future of Affordable, Energy-Efficient Housing

Lida Group’s advanced sandwich panel walls are not just changing individual homes—they are transforming the global prefab housing industry and setting new standards for affordability, energy efficiency, and sustainability. The company’s innovations have had three key impacts on the industry:

6.1 Raising the Bar for Thermal Insulation in Affordable Housing

Before Lida Group’s entry into the market, affordable housing—whether traditional or prefab—was synonymous with poor thermal insulation. Developers prioritized low upfront costs over long-term energy savings, leaving homeowners with high utility bills and uncomfortable living conditions. Lida Group’s sandwich panel walls have changed this narrative, proving that affordable housing can also be energy-efficient.

Today, many prefab housing providers are following Lida Group’s lead, investing in better insulation materials and designs to compete. This competition has benefited consumers, as more affordable, energy-efficient options are now available. For example, in India, several local prefab providers have launched “insulated prefab homes” modeled after Lida Group’s design—though none have matched Lida Group’s combination of low cost and high performance.

6.2 Accelerating Adoption of Sustainable Construction Practices

The building sector’s high carbon footprint is a major barrier to global climate goals. Lida Group’s sandwich panel walls reduce this footprint by cutting energy use for heating and cooling and using recycled materials. By demonstrating that sustainable construction can be affordable, Lida Group has accelerated the adoption of green practices in the prefab industry.

Governments and international organizations have taken notice. The United Nations Human Settlements Programme (UN-Habitat) has recognized Lida Group as a “leader in sustainable affordable housing” and included the company’s sandwich panel technology in its global guide for disaster-resilient housing. In Brazil, the government now offers tax incentives to developers who use Lida Group’s panels—encouraging wider adoption of sustainable construction.

6.3 Expanding Access to Quality Housing in Underserved Regions

The biggest impact of Lida Group’s sandwich panel walls is on underserved regions—where millions of people live in substandard, uninsulated housing. By making well-insulated, durable homes affordable, Lida Group is helping to address the global housing crisis and improve quality of life for vulnerable populations.

In Kenya, for example, Lida Group’s homes have become a popular choice for low-income families in slums, where traditional housing is overcrowded and uninsulated. A 2023 report by the Kenyan Ministry of Housing found that families living in Lida Group’s homes had lower rates of respiratory illnesses, better sleep quality, and higher school attendance for children—proving that quality housing has far-reaching social benefits.

7. Future Innovations: Making Sandwich Panel Walls Even Better

Lida Group is not resting on its laurels. The company invests heavily in research and development (R&D) to enhance the performance, sustainability, and affordability of its sandwich panel walls. Three key areas of innovation are currently underway:

7.1 Eco-Friendly Core Materials

Lida Group is developing a new insulation core made from 100% recycled agricultural waste—such as sugarcane bagasse and rice husks. This bio-based core has a thermal conductivity of 0.035–0.040 W/m·K (comparable to EPS foam) and is fully biodegradable. It also costs 15–20% less than traditional cores, as it uses waste materials that would otherwise be discarded.

A pilot project using the bio-based core was launched in Brazil in 2023, with 50 prefab mobile homes built for rural families. Early results show that the cores perform well in Brazil’s humid climate, with no signs of moisture damage or reduced insulation performance. Lida Group plans to scale up production of the bio-based core by 2025, making it available globally.

7.2 Smart Insulation Technology

To further improve energy efficiency, Lida Group is integrating smart technology into its sandwich panel walls. The company is developing a “smart insulation layer” that uses phase-change materials (PCMs)—substances that absorb and release heat to regulate indoor temperatures. The PCM layer works with the existing insulation core to keep homes cooler in summer and warmer in winter, reducing energy use by an additional 15–20%.

The smart insulation layer also includes sensors that monitor indoor and outdoor temperatures, humidity, and energy use. Data from the sensors is sent to a mobile app, allowing homeowners to track their energy consumption and make adjustments to save money. A pilot project with the smart layer is ongoing in Phoenix, with early results showing a 18% reduction in utility bills compared to standard Lida Group homes.

7.3 Ultra-Thin, High-Performance Panels

For urban areas where space is at a premium, Lida Group is developing ultra-thin sandwich panel walls (5 cm thick, compared to the current 8–10 cm) that maintain the same thermal performance as thicker panels. The ultra-thin panels use a high-density insulation core and reinforced outer facings to achieve this, allowing for more usable space inside the home.

The ultra-thin panels are currently being tested in Tokyo, Japan—one of the world’s most densely populated cities. Early feedback from developers is positive, as the panels allow for smaller lot sizes and more compact home designs. Lida Group plans to launch the ultra-thin panels in 2024, targeting urban markets in Asia and Europe.

8. Conclusion

Lida Group’s innovative prefab mobile houses, with their advanced low-cost sandwich panel walls, represent a paradigm shift in affordable, energy-efficient housing. By prioritizing superior thermal insulation—achieved through a thoughtful combination of high-performance materials, precision manufacturing, and cost-effective design—Lida Group has bridged the longstanding gap between affordability and comfort.

The science behind the sandwich panel walls is clear: their three-layered structure, with low-thermal-conductivity facings and high-insulation cores, effectively blocks conduction, convection, and radiation—keeping homes comfortable year-round while slashing energy costs. Real-world case studies across diverse climates—from Jakarta’s humidity to Bishkek’s cold and Phoenix’s extreme heat—prove that these walls deliver on their promise, improving quality of life for homeowners and reducing carbon footprints.

Beyond thermal insulation, the panels offer additional benefits that enhance value: sound insulation for quiet homes, fire resistance for safety, and durability for long-lasting performance. These benefits, combined with the low upfront cost and long-term savings, make Lida Group’s prefab mobile homes a compelling choice for homeowners, developers, and governments worldwide.

The industry impact of Lida Group’s innovation is equally significant. The company has raised the bar for thermal insulation in affordable housing, accelerated the adoption of sustainable construction practices, and expanded access to quality housing in underserved regions. With ongoing R&D focused on eco-friendly materials, smart technology, and ultra-thin designs, Lida Group is poised to continue leading the way in sustainable, energy-efficient housing.

In a world facing rising energy costs and climate change, Lida Group’s sandwich panel walls offer a simple yet powerful solution: homes that are affordable to build, cheap to run, and comfortable to live in. For millions of people around the world, these walls are not just a building component—they are a pathway to a better, more sustainable future.

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