A musty smell and the presence of damp spots are two "telltale" indicators of the fact that ventilation within an environment is not exactly ideal.
Well, careful preparation and care of the ventilated crawl space it could be the solution to all your moisture woes: let's try to understand what are the characteristics of this remedy, and why it's worth thinking about it!
Odors and appearances of mold they are mainly caused by an increase in humidity levels within the environment. A problem that is certainly not rare (indeed), which is aggravated in some areas where the humidity is quite high.
However, if you are not in an area whose humidity levels are known to be high, it can be assumed that accumulations of humidity in the interior are the result of a building defect that causes an increase in these thresholds inside the structure.
Of course, the causes of such a wet incidence could be numerous. Sometimes the "occupants" themselves contribute to the phenomenon, who with their activities and bad habits can harm the exchange of air: think of not opening the windows frequently, to operate a heating at very high temperatures in climates colder, not to use the exhaust fans in the bathroom and kitchen, or not to open such rooms, or even to grow indoor plants, and so on.
In the eyes of an expert, a first visual inspection of the building should already allow to identify if there are visible signs of growth of mold on the internal surfaces, thus arriving more quickly at identifying the cause of the problem.
For example, when there is mold on a ceiling (which should not normally be a wet area) you can look for water leaks from the roof or upper floors, due to damaged materials, badly installed flashings, clogged gutters or a leaking pipe.
On the other hand, when there is no visible sign of evident growth, usually the problem of humidity in the house it derives from a hidden area in the walls: the use of an electronic humidity meter can allow you to check the surface areas, especially where possible water leaks are expected, such as around showers.
Thus arriving at the goal of our in-depth study today, namely the ventilated crawl space, we cannot fail to underline that a main problem related to humidity in the house is the inadequate ventilation of the flooring.
There are several visual signs that can provide some effective indication of a possible ventilation problem: think of the formation of some stains in the flooring or even the formation of more or less serious unevenness, depending on the material of which the flooring is made. .
In the event that there are ventilation problems in the floor, an expert will proceed with taking specific humidity readings in order to identify the extent of the problem.
Broadly speaking, the cause of problems of flooring humidity it can be traced back to the same situation that affects the internal areas of the structures, that is, the high levels of condensation and a poor exchange of air. But how to solve these situations?
An effective response can be represented by the ventilated crawl space or by mechanical ventilation of the floor.
Ventilated crawl space to ensure better ventilation
The ventilated crawl space is an intervention that can allow one better floor ventilation, taking the air and passing it through empty areas under the flooring. Generally, the air is drawn using the cavities of the walls or from the outside, using ducts and flues that can suck in the air and expel it through an external air intake. We remind you that there is no homogeneous intervention for all buildings, considering that each environment will require different interventions according to its specific characteristics.
In its simplest version, the ventilated crawl space however, it is configured as a traditional ground attack system, able to ensure that the water contained in the ground does not infiltrate the structure, damaging the adjacent rooms. The average thickness of the substrate is around 30 - 50 centimeters, with a suitable slope position that can guarantee a better disposal of any water infiltrated under the structure.
However, from this more traditional form of ventilated crawl space, other types then spread, which perhaps have more sophisticated levels of protection, or perhaps are even more elementary, protecting only from rising damp and not from the problem of condensation that in some areas it could be particularly important in the summer.