This sandwich panel with a highly heat-insulating CFC-and HCFC-free polyurethane rigid foam core is suited best for today's requirements for thermal insulation and moisture protection.

Besides that, it may also be used as a visual design element for façades.

The sloped element joint with an integrated sealing closes during installation without any additional working steps. Thus, one single operation produces a reliable connection without any thermal bridge. The G4® panel ensures a very high installation speed and is therefore THE preferred product-of-choice for many professional installation companies.

Depending on the application, a minimum roof slope of > 5° is recommended.

For additional information, please refer to our detailed technical manual.


Outer shell Inner
weight Thermal
Heat transfer
(Ψ - Joint factor)
  s tN tN kg / m² R U without Ψ U with Ψ
  mm mm mm kg / m² m² K / W W / m² K W / m² K
G4 30/68 0,60 0,45 11,1 1,21 0,773 0,798
40/78 0,60 0,45 11,5 1,62 0,584 0,598
50/88 0,60 0,45 11,9 2,04 0,489 0,499
60/98 0,60 0,45 12,3 2,46 0,393 0,399
80/118 0,60 0,45 13,1 3,29 0,296 0,299
100/138 0,60 0,45 13,9 4,12 0,237 0,240
120/158 0,60 0,45 14,7 4,96 0,198 0,199
150/188 0,60 0,45 15,9 6,20 0,159 0,160

Reaction to Fire

Building material classified as B-s2,d0 flame-resistant according to DIN EN 13501-1

Hard Roofing

Hipertec® Roof panels are rated as"hard roofing" - resistant to airborne fire and radiating heat according to DIN EN 14509

Thermal Conductivity

λ=0,024 W/m.K according to DIN 4108 and DIN EN 13165

The insulation values are regularly monitored by external bodies and may be applied without any further reduction.


Sound Insulation

Rw ≥ 25 dB


Corrosion Protection

  • Standard version with external sheet 25 μm polyester and internal sheet ≈15 μm thin coating (DU)
  • External sheet: category RC3; internal sheet: category RC2 (under the terms of DIN EN 10169)


External sheet: corrosivity category C3 corresponding to average duration of protection for urban and industrial environments with moderate exposure to sulphur dioxide.  

Internal sheet: corrosivity category C2 for dry indoor rooms and buildings with occasional minor condensation. Other coating systems are available for more sophisticated demands such as buildings near the sea, farm buildings with high ammonia exposure or moist rooms.

(Conditions of surroundings and corrosivity categories under the terms of DIN EN ISO 12944-2)

Standard lengths

> 2,00 m up to 25,00 m, greater lengths on request.