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TECHNOLOGY
AND - FEATURES

At KRUG EXPEDITION, every detail is built for performance, comfort, and durability—from reinforced modules to smart interiors and advanced materials.

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( MODULE BODY )

Robust
Module Body

All our modules are manufactured in-house, which enables us to ensure quality control at every stage of production—from raw materials to the finished product. We build our modules using reinforced sandwich panels that offer exceptional insulation and performance.

( MODULE BODY )

All our modules are manufactured in-house which enables us to ensure quality control at every stage of production – from raw materials to the finished product.

We build our modules using reinforced sandwich panels that offer exceptional insulation and performance. These modules are entirely free of cold bridges, which not only prevent condensation inside but also reduce energy consumption in both extremely cold and hot conditions. Every composite panel is designed using CAD so that all necessary parts and reinforcement elements are considered and planned before the composite panels are produced by Krug XP specialists.

We use a rigid polyurethane foam as the core insulation material for our panels. The insulation core is covered with layers of fiberglass laminate. This combination of materials is vacuum cured to create 60 mm thick panels, which are then used as the primary structural element for our modules. The floor panel is 80 mm thick, as it additionally includes a layer of special composite material and a steel frame to support the weight of the module.

All other custom structural parts, like corner caps and uniquely angled profiles, which are not readily available in GRP, are also manufactured by our team using fiberglass molding technology. This way we ensure all bonded elements are made of the same material and have consistent thermal expansion properties.

 

1. SUBFRAME

The subframe decouples the module body from the vehicle chassis ensuring that when driving off-road, which results in twisting loads being placed on the chassis frame, the module is not damaged.

We build our intermediate frames using a multiple-point mounting system with elastomer or spring buffers, taking chassis manufacturer construction guidelines into account and using a technical concept developed by one of the most recognized companies in the field of special vehicle construction. This mounting solution has proven to be reliable and stable off-road, as well as exceptionally stable on the highway. Our subframe is made from a special high-strength steel, it is fully galvanized both inside and out, and then externally painted.

 

2. WINDOWS

Our windows are made using real-tempered glass and have been tested to withstand the harshest road and climatic conditions. They can be safely exposed to low pressure at high altitudes.

 

3. VENTILATION

Powerful roof fans operate in both air inlet and outlet modes to provide optimal air circulation inside the module. A ventilation unit with heat recovery reduces humidity and saves energy.

 

4. DRIVER CAB CRAWL-THROUGH

The living module can be permanently connected to the driver cab with a flexible bellow. It is easily disconnected from the cab by means of quick-release latches that allow for easy driver cab tilting to access the engine for service.

 

5. SECURITY

All doors and hatches are equipped with reliable 3-point locks.

( LAMINATE )

Our custom outer laminate is made of high-density, cross-woven fiberglass layers impregnated with epoxy resin.

  • This combination delivers greater strength and impact resistance than standard laminates, which often use brittle polyester resin with weak fiberglass bonding. Our laminate contains 70% fiberglass vs. 25–50% in typical GRP panels. Combined with epoxy resin, it provides excellent tensile strength, stiffness, durability.

  • It allows us to use a 2 mm thick laminate while still outperforming 3–4 mm conventional laminates, and it eliminates common issues like surface cracking. Compared to aluminum, our laminate is lighter, has three times the tensile strength, and is less heat conductive and more resistant to weather-related wear.

( LAMINATE )

EXTERNAL LAMINATE

The custom laminate we use for the outer layers of our sandwich panels is made of multiple layers of high-density, cross-woven fiberglass impregnated with epoxy resin. This combination results in significantly greater strength and impact resistance than standard laminates, which are typically made with more brittle polyester resin that lacks strong bonding with fiberglass.

Our laminate contains 70% fiberglass, while traditional GRP panels usually contain only 25–50%. This high fiberglass content, combined with epoxy resin, provides exceptional tensile strength, stiffness, and durability. It allows us to use a 2 mm thick laminate while still outperforming 3–4 mm conventional laminates, and it eliminates common issues like surface cracking. Compared to aluminum, our laminate is lighter, has three times the tensile strength, and is less heat conductive and more resistant to weather-related wear.

 

INTERNAL LAMINATE

Since the mechanical stress placed on the interior is significantly lower, we use a GRP laminate with a lower proportion of glass compared to the laminate we use on the outside. This saves a significant amount of weight and enables the addition of an extra thick gelcoat layer that covers the laminate surface and results in a perfectly smooth interior finish.

 

POLYURETHANE INSULATION CORE

Thanks to the excellent thermal insulation properties of the polyurethane foam, our 60 mm panels offer the same level of insulation as a 300 mm thick wooden wall. Unlike Styrofoam, it retains its shape even at extreme temperatures.

( MODULE Features )

( HEATING SYSTEM )

Efficient, reliable heating
with diesel for maximum comfort

  • For all KRUG EXPEDITION cabins, we install the Scheer Nano diesel-powered liquid heater as standard, providing a dependable and efficient heating solution tailored for expedition needs. This system offers quiet operation and stepless power control, maintaining a consistent interior temperature for optimal comfort.

  • Diesel heating ensures maximum independence by drawing fuel directly from the vehicle’s main tank, effectively eliminating the need for separate gas supplies. Unlike gas systems that consume over 80% of your gas in winter and often require extra bottles and adapters, diesel heating is simpler and more reliable.

( WATER SUPPLY )

Our water supply system
is designed for maximum reliability.

  • Each Krug module is equipped with a backup water pump that can be easily switched over to in case the main pump fails, saving the effort of changing or repairing the main pump while travelling. We optionally install a water filling station to filter and treat the water when filling the fresh water tanks.

  • The water is pre-filtered via a filtration system with 3 pre-filtering stages with activated carbon and a filtration capacity of up to one micron (10 nanometers). Water is then treated with the PURION 1000 UV unit. The UV lamp emits a wavelength of 254 nm without producing any ozone.

( POWER SUPPLY )

Our modules and their equipment are designed to provide a complete all-electric experience.

  • Powerful solar panels, a generously sized battery bank and matching components by Victron (an established manufacturer of energy systems for marine and off-grid applications) ensure a reliable supply of energy wherever you may be, so that you don’t have to worry about procuring gas bottles and / or adapters.

  • Our standardized energy supply system is extremely compact and includes a battery bank with a capacity of 600 Ah at 25.2 volts (24 kW/h). To achieve these impressive values, we rely on the latest lithium-ion technology, known for its high energy density (high energy content with low weight and volume).

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DIESEL-POWERED LIQUID HEATER

We install the Scheer Nano diesel-powered hot liquid heater in our cabins as standard. This system ensures low-noise operation and stepless power regulation, maintaining a constant interior temperature for maximum comfort.

 

WHY DIESEL HEATING?

Heating with diesel provides maximum independence. Fuel is drawn directly from the vehicle’s main tank, eliminating the need for separate gas purchases and ensuring availability worldwide. A diesel heater offers significant advantages over gas heating, particularly in winter and international travel.

Gas heating accounts for over 80% of total gas consumption in winter, often requiring additional gas bottles and adapters that can be difficult and expensive to source abroad. With diesel heating, you can heat while driving, free up storage space, and eliminate the need for a separate gas bottle for heating.

 

EFFICIENT LIQUID-BASED HEATING SYSTEM

The Scheer Nano liquid heater powers an underfloor heating system and multiple radiators, ensuring even heat distribution throughout the living cabin while retaining heat effectively.

 

KEY FEATURES OF THE SCHEER NANO LIQUID HEATER:

  • 7 kW heating output
  • Hybrid function – Diesel/electric operation with up to 3 kW output
  • Automatic altitude adjustment for optimal use at various elevations
  • Blue burner technology – High efficiency and environmentally friendly
  • Pressure-resistant stainless steel boiler
  • Preheating capability – Utilizes engine heat and preheats the drive section

 

HEATING SYSTEM COMPONENTS:

  • Underfloor heating in the living area
  • Radiator in the dinette
  • Radiator in the bedroom
  • Towel radiator in the bathroom
  • Radiator in the garage

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OUR WATER SUPPLY SYSTEM IS DESIGNED FOR MAXIMUM RELIABILITY.

We optionally install a water filling station to filter and treat the water when filling the fresh water tanks. The water is pre-filtered via a filtration system with 3 pre-filtering stages with activated carbon and a filtration capacity of up to one micron (10 nanometers).

Water is then treated with the PURION 1000 UV unit. The UV lamp emits a wavelength of 254 nm without producing any ozone. This wavelength ensures that germs, bacteria, viruses and spores are eliminated. The PURION 1000 enables you to disinfect drinking water at a flow rate of up to 1,000 l/h.

A Seagull ultrafine structured matrix filter and a UV LED water treatment unit can be installed as an optional feature to ensure that the water used for drinking is absolutely safe. A Seagull IV-X2 water filter with activated carbon pre-filter effectively removes all chemical and visible contaminants, like herbicides, pesticides, chlorine and other chemicals and microorganisms of the sizes down to 0.4 micron (4 nanometers). Furthermore, this filter removes bad taste, odors, and turbidity.

The next layer of water treatment is a UV LED unit. Its purpose is to eliminate any residual bacteria or viruses that were not filtered out at the previous stages.

The UV LED disinfection unit is fully automatic. It has no warm-up phase unlike a traditional UV lamp and turns on instantly when the water is drawn.

Another unique feature is our flexible tank volume allocation system, which allows choosing the capacity distribution between the black (if applicable), grey, and additional fresh water at the project planning stage.

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OUR MODULES AND THEIR EQUIPMENT ARE DESIGNED TO PROVIDE A COMPLETE ALL-ELECTRIC EXPERIENCE

Powerful solar panels, a generously sized battery bank and matching components by Victron (an established manufacturer of energy systems for marine and off-grid applications) ensure a reliable supply of energy wherever you may be, so that you don’t have to worry about procuring gas bottles and/or adapters.

Our standardized energy supply system is very compact and includes a battery bank with a capacity of 600 Ah at 25.2 volts (24 kWh). To achieve these amazing values, we rely on the latest lithium-ion technology, which is characterized by a very high energy density (high energy content with low weight and volume). The batteries we use have an integrated energy management system and meet all necessary safety standards and requirements.

Two powerful inverter-chargers with an output of 5000 VA supply our modules with 230V and 120V alternating current and allow charging the batteries from both 120V and 230V grids, making it possible to charge anywhere in the world.

Several energy sources are available for charging the batteries. In addition to traditional solar and shore power charging, we also connect the truck’s alternator to the module batteries via a charge controller to continually charge the house batteries when the engine is running.

Our energy supply system features an emergency start function for starting the engine with the help of module batteries in case the vehicle starter batteries become discharged.

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