Carbonation means the deep degradation of the plaster and even of the concrete in the outer layer of the walls, of which the facades of the blocks are made, due to the action in time and the high concentration of C02 and S02 in the urban areas.
The adhesion to these surfaces of ordinary mortars, based on Portland cement and with aggregates sorted from river ballast (which also contains ballast resulting from gel rocks – is crushed after 2-3 cycles of frost – thaw), decreases dramatically.
That is why the poorly ventilated system is preferable , as it has the advantage of mechanical fastening in the concrete load-bearing layer (fixing approximately 60 mm).
because the ETICS system (classic) to be properly , the plaster must be cleaned and rebuilt, as well as the use of a mortar with a suitable chemistry, containing in its composition synthetic resins of appropriate quality and quantity, quartz quarry aggregates, which involves very high real costs for the system (reaching approximately 27 € / sqm).
Thermal insulation with Thermomax system
Thermal insulation with polystyrene
|Impermeability: due to the external protection, with aluminum sheet, pre-painted in electrostatic field, with polyester powders by tribokinetic effect and due to the fact that polyurethane foam has closed cells in proportion of 92%, does not absorb water vapor and therefore the system is waterproof .|
Total price per system, comparative in terms of quality
The total system price meets the cost standard
Material 27 € / sqm and labor from 10 € / sqm