Often water infiltration can not be solved by acting directly on the surface on which the infiltration takes place, but only on the surface where they "occur" in the form of spots and streaks of moisture or real water inflows. Cellars, basements, lift basements, walls and floors with the ground are the most common situations in which it is necessary to act with negative pressure.
The material intended to be used for this type of intervention must have, in addition to waterproofing capacity, also a high adhesion to the substrate, which must not be compromised by the hydrostatic pressure of infiltration that it is inteded to encapsulate.
Waterproofing interventions with negative pressure, although it is not possible to prevent the structure involved to absorb water, can effectively block the spill, thus avoiding the ugly consequences of infiltration.
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