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  • UHB
  • UHB
  • UHB


The wood construction screw for rafter insulation and rear-ventilated wood façades


  1. TX drive
    Excellent power transmission
    Secure application, no slipping
    Problem-free application with standard tools
  2. Cylinder head
    Small diameter for easy countersinking in wood, low splitting effect
  3. Thread under head
    Secure fixing of the counter battens at a distance
  4. Reaming-wings 
    To reduce the screw-in resistance
  5. Coarse thread
    Screw in quickly thanks to the large pitch
    High load capacity thanks to special thread geometry
  6. Tip rolled to the point
    Immediate precise screw grip
    Maximum load capacity
  7. Material/surface
    Hardened carbon steel
    Zinc plated yellow
    Slide coating for easier screwing in

Field of application:

  • Rafter insulation, even when there is no pressure-resistant insulation, rear-ventilated wood façades

Application recommendation: 

  • Pre-drilling may be required depending on the wood quality and application situation