Public Roof Inverted Roof

Traffic areas can also be implemented on inverted roofs. However they require a specially adapted design. All functional layers must be sufficiently porous for water vapour, so that the insulation does not absorb too much water. It is also necessary to determine the compressive stresses resulting from the constant load and variable load (traffic load) and make adjustments based on the compressive strength of the insulation.

Weight from 400 kg/m² or 4.0 kN/m² 
Build-up depth from 250 mm
Roof pitch 1 - 5°
Load class 1-2 (max. 2.5 t vehicle weight)

 

Paving

  • Height 60-120 mm minimum
  • Surface layer (e.g. interlocking paving, slabs, concrete)

Bedding material

  • E.g. bedding stone chippings 0–5 mm (30–50 mm)
  • Screed layer for surfacing material

Base Layer

Base layer of gravel 0-32 mm or 0-45 mm (0-22 on heights less than 120 mm)

Filter Fleece FIL 300

Prevents fine particles from forming sludge in the drainage layer; high water permeability, very high robustness class GRC 5
Productdetails: Filtervlies FIL 300

Building Protection and Drainage Element FKD 60BU

  • Pressure resistance and accessible by trucks
  • Prevents accumulation of water
  • Lightweight build-up with high drainage capacity
  • Filled with Perl 8/16

Productdetails:

Trickle Protection Fleece RSV 120

Prevents fine particles from forming sludge in the insulation layer
Productdetails: Trickle Protection Fleece RSV 120

 

Protection, Separation and Slip Layer SGL 500 and Separation and Slip Sheet TGF 0.2