The bodywork concept for any climate


Cookie required

Please allow the marketing cookies to view this video

All-round, optimum protection – for many years now

As early as 1978, HYMER set new standards with the development of its innovative PUAL design. The excellent insulation provided by the closed-cell PU foam guarantees a comfortable temperature in summer and cosy warmth during the colder months. The first generation of PUAL side walls consisted of an aluminium outer skin, a foam core and a high-quality plywood interior wall. The manufacturing process: by applying a pressure of approx. 500 tons, the PU foam was bonded to the aluminium and plywood, creating an extremely sturdy and durable side wall without thermal bridges.


PUAL 2.0 – The evolution

With the evolution of the patented PUAL bodywork concept, HYMER continues to lead in body shell design in the industry: now featuring an aluminium inner and outer skin, improved foam composition and a 100% wood-free design without thermal bridging – for maximum stability and optimal insulation values. Aluminium on the inside wall ensures even, rapid heat distribution. The polyurethane foam also offers numerous other benefits. Among other things, it is water-repellent, lightweight and extremely durable.

The advantages at a glance

  • 100% wood-free (no wooden framework in the side walls)

  • Outstanding heat and low-temperature insulation due to excellent insulation values

  • The heat insulation provided by a 3 cm PUAL wall is equivalent to a 68 cm-thick solid brick wall

  • Fine-pore polyurethane foam core is water-repellent, rot-proof and lightweight

  • Gapless elastic bonding of the roof and walls for a high degree of stability and torsion resistance

  • Withstands the highest stresses

  • Absolutely winterproof

Our innovation highlights

Each and every day, we work on making motorhoming as enjoyable as possible for our customers. Learn more about our latest technologies and innovations.

  • Structure of the HYMER motorhome with a super lightweight chassis with a double floor in 3-D optics

    HYMER SLC chassis

    With the innovative Super Light Chassis, we have developed an unparalleled chassis with many advantages to offer: more storage space in the floor, good thermal insulation for the cold and heat as well as enhanced and safe driving comfort.
    SLC chassis detail page
  • hymer_smart_battery_system_fun

    HYMER Smart Battery System

    With the HYMER Smart Battery System, HYMER is presenting a unique solution for supplying leisure vehicles with power and combining the superb performance of lithium batteries with the low costs of conventional lead batteries.
    More about the Smart Battery System