Isolcupolex Plus

Isolcupolex Plus, the ventilated and insulated concrete floor

ISOLCUPOLEX PLUS is a patented system to create insulated and aerated concrete floors. The elements of the system, made of insulation material work as a formwork for the concrete to create a raised floor insulation. It is ideal when insulation is required and when there is a high potential for humidity or gas to come from the ground, as well as when the pavement layer has to be raised or backfilled.
The system is made of a 100% recycled plastic dome, that protects from the raising of humidity, and an insulation layer in EPS with a specific geometry and high level of insulation. ISOLCUPOLEX PLUS’s primary advantage is to have the insulation and aeration in one step and also to have the insulation layer on the outside of the cast-in-place concrete structure. In this way the concrete can work as a thermal flywheel providing an optimal average radiant temperature all year round.

ISOLCUPOLEX PLUS is adaptable to any project layout, moreover, the thickness of the insulation layer can be tailored in order to comply to any thermal insulation requirement.
The concrete slab geometry created with this system distributes all the loads from the top of the slab to the sub-base without loading and deforming the insulation layer. Moreover, there is no need to create a second reinforced slab, as in the case of a more traditional raised floor insulation, which saves significantly in time and money.

By installing the insulation and aeration in one step ISOLCUPOLEX PLUS saves time and money and gives the project value.


  • Thermally insulated pavements for private and public buildings
  • Insulation and aeration for refrigerated buildings
  • Substitution for traditional infill and insulation material
  • Creating an aerated floor
  • Creating a void for cables and utilities
  • Raising the floor while reducing its weight
  • Ventilation of humidity and radon gas


Isolcupolex Plus

Humidity and Vapor Intrusion/Radon Mitigation

Isolcupolex Plus

Bad or Expansive Soils

Isolcupolex Plus

Refrigeration Buildings

Isolcupolex Plus

Stormwater Management

Isolcupolex Plus

Concrete Roads


  • High level of insulation
  • Comfortable ambient temperatures
  • Natural or mechanical ventilation of the sub-floor
  • Alternative to the traditional aeration and insulation systems
  • Saves gravel or other infill materials
  • Can reach any transmittance value
  • Adaptable to any project layout
  • Beams and slab can be poured monolithically if designed together
  • Easy and quick installation
  • Works well with floor heating systems


  • On average two laborers set 20 m²/hr
  • Each ISOLCUPOLEX dome has an installation arrow
  • Installation follows a design layout
  • Forms are installed by starting from left to right and top to bottom
  • Lay the reinforcing mesh directly on top of CUPOLEX leaving the appropriate cover
  • Pouring and finishing of the concrete slab in the conventional manner, filling the legs first
  • Pour in multiple steps if the slab is very thick
  • Cut the elements if needed in order to adapt to the area


Pontarolo Engineering S.p.a. gives full technical assistance with project design, specifications, BIM objects and logistic service.


  • Typical Isolcupolex Plus slab design
  • Concrete consumption (m³/m²) for Cupolex filling
Typical Isolcupolex Plus slab design
Uso della StrutturaSovraccarico Permanente (Kg/m2)Sovraccarico Accidentale (Kg/m2)Spessore della Soletta (cm)Armatura MetallicaPressione di Contatto
Abitazione Civile2002005d.5/20×201,30
Concrete consumption (m³/m²) for Cupolex filling
Isolante – Spessore Isolante sopra la Cupola (cm)
8 10 12 14 16 20 30 Senza Isolante
Spessore Isolante sotto gli IsolPiedi
0 0,020 0,024 0,029 0,033 0,038 0,047 0,070 0,049
3 0,018 0,023 0,027 0,032 0,036 0,045 0,068 0,049
6 0,016 0,021 0,025 0,030 0,035 0,044 0,066 0,049

Nel caso di carichi superiori, contattare l’ Ufficio Tecnico.


  • Brochures
  • DWG and CAD
  • BIM
  • Specifications


San Vito al Tagliamento

PONTAROLO ENGINEERING SPA have been working in the construction business for over 55 years.
+39 0434 857010

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