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You are here: Building Insulation - Roofing - With tiles over wood laths

Technical Specifications

  • Positioning of the edge stop beam
  • Spread a breathable membrane mantle of non-woven fabric
  • Lay down STIFERITE’s Class S panels
    (alternative: STIFERITE’s GT)
  • Spread a waterproofing and breathable membrane of non-woven fabric
  • Lay down and install laths in the panels and the structure underneath
  • Lay down and install metal profiles to support the tiles
  • Lay down and install regular or clay tiles and ventilation elements (bird protector grill, ventilated ridge)

Instructions and Guidelines
Polyurethane foams are able to withstand high temperatures (+90/100°C) that accumulate on the protective element  subjected to the sunlight

The use of metal profiles to install the tiles available as an accessory of the Isoventilato system, is a valid alternative to the traditional double wood laths method

Also see: the installation procedure

The tables indicate the suggested thickness of Stiferite’s panels based on

  • Climate Zones
  • Current legislative set limits of thermal transmittance
  • And the following composition of the structure:


Suggested thickness

DLgs 311/06

TAX deduction MD 65%
DM 26/10/2010

A 70 mm 80 mm
B 70 mm 80 mm
C 70 mm 80 mm
D 80 mm 90 mm
E 80 mm 100 mm
F 80 mm 100 mm


Suggested thickness

DLgs 311/06

TAX deduction MD 65%
DM 26/10/2010

A 50 mm 70 mm
B 50 mm 70 mm
C 50 mm 70 mm
D 70 mm 80 mm
E 70 mm 90 mm
F 70 mm 90 mm


Note: For different composition of structures or material, we suggest using the calculation program available online (see: Thermal transmittance and verifications of condensation with Glaser method)




Tie point of Wall and Roof made of cement and micro-ventilated