DÜNA® Flat Roof Dowel

Scope of Application

  • Flat roof
  • Fixing element for insulation boards
  • Mounting substrate: moisture-proof roof sheets, concrete, concrete cassettes

Technical Data

Dowel plate: Ø 50 mm
Shaft: Ø 8 mm
Spreading zone: 50 mm
Material dowel: plastic
Material expansion pin: galvanised
Bore hole: Ø 8 mm
Bore hole depth: 35 mm min
Installation depth: 25 mm min
Recommended: 5 pieces per m2


  1. Drilling a bore hole Ø 8 mm with a
    bore hole depth of 35 mm min
  2. Insert the flat roof dowel, the plate sits flush on the insulation
  3. Drive in the pre-assembled expansion nail
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Order by E-Mail: sales@duena.de