Roof safety hooks to DIN EN 517

Basic information

  • At least two roof safety hooks are needed in staggered arrangement to ensure secure fastening. For ladders up to 4.20 m in length, two load-bearing roof safety hooks are needed.
  • For each additional ladder section of 2.00 / 2.80 m in length, one extra hook is required; for a length of 4.20 m, two extra hooks will be needed.


  • Supporting safety roof hooks must be fitted centrally on the rafters. Smallest rafter circumference: 60 x 80 mm.