Elementary school Duca D'Aosta II° lotto, Cordenons (PN), Italia - Expanded polystyrene insulation - 160 mm

The Building

Building pre-intervention

Building post-intervention

Elementary school Duca D'Aosta II° lotto, Cordenons (PN),Italia

The building is located in the Cordenons historic center. In 2012 the building was affected by the collapse of a portion of the roof. The intervention on the ground floor is part of the energy and seismic upgrading of the building

The Solution

Solution pre-intervention

Solution post-intervention

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What is the Solution?

The solution consists of an initial phase of demolition of the ground floor slab to obtain the space necessary to implement the new under-floor cavity. Once the base layer had been prepared and levelled, the ventilated cavity was installed using EPS Twinpor (Isolcupolex). The system is composed by 28 cm high Eps blocks that create the space for the natural ventilation and by 16 cm thermal insulation. On top, a reinforced concrete hood is realized.

Why Does it work?

The solution is particularly advantageous as it improves the energy performance of the ground floor, impacting elements that are not of particular historical and cultural interest. Furthermore, the solution can be implemented quickly, as it consists of prefabricated elements that can be adapted to the existing surface.

PROS

High thermal insulation of the aerated crawl space and floor package;
Increased living comfort;
Ventilated crawl space in a natural or mechanised way;
Saving of gravel and other filling materials;
Achievement of low thermal transmittance values;
Also adaptable to any height, type or shape of surface;
Possibility of simultaneous casting of aerated crawl space and foundation beams in one construction phase;
Fast and easy installation;
Versatility in terms of creating the superior finishing and installation package;
Totally recyclable at end of life;
Insulation is not encumbered by loads.

CONS

Need to remove the original flooring

Insulation material

EPS Twinpor

Insulation thickness

160

Thermal conductivity

0.031

Health issue

information not available

Technical drawings

Additional documentation

A.P. ISOLCUPOLEX.xlsx

Installation Method

The existing floor is demolished to reach the foundations. The area is then prepared by pouring new concrete to level the base. The 28 cm high EPS ventilated cavity blocks are then installed. Above this, 16 cm thick insulation is placed and cut to fit the surface of the room. The next stepis laying the reinforcing mesh directly on top of ISOLCUPOLEX leaving the appropriate cover; then 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 and cut the elements if needed in order to adapt to the area). The installation is completed with the addition of the floor.

Moisture Management and Technical Compatibility

information not available

Airtightness

information not available