Rising humidity, it would seem one of those classic problems that do not affect us, yet how many we are, owners of new or recently renovated buildings, who shrug in front of small spots and then ... And then we put our hands in our hair because in a few months the problem has invaded the house.
From a small spot noticed by chance, to mottled walls. We have consulted Stefano Pigatto, of Archimede Group, first moisture specialist in Italy, to let us explain what isrising damp and how to move so as not to be victims. And above all to "guess" the right solution for don't waste time and money.
1) What is rising damp?
LRising damp it is that annoying phenomenon present in most buildings, new or old, which causes paint and plaster to crumble. When the phenomenon ofrising damp concur the principle of capillarity, the evaporation of moisture is another phenomenon, often underestimated, of an electrical nature for which the humidity from the subsoil, overcoming the force of gravity, rises up the walls through the capillaries of the materials.
2) Are there places or types of buildings or other context features that favor the creation of rising damp?
Yes, there are many factors that favorrising damp. Some types of plasters or paints, incorrect technical construction details, climatic and geological situations and only the passing of time are all aspects that favor it. To complicate things there are also wrong building repairs, made without precise knowledge of the undesirable effects. For example, in some cases, the use of waterproofing barriers or dehumidifying plasters they create more harm than good. In these cases, in addition to having to remove the wrong materials, very often the humidity inside the masonry has spread much more than before, making the situation worse.
In other cases the problem of rising damp it is simply moved from the walls to the floors or to the adjacent walls. It seems impossible but often the walls appear beautiful to look at, after having only hidden therising damp with incorrect interventions, but the environments become unhealthy because they are rich in humidity, thus favoring the formation of mold.
3) Which is the most frequent of the causes of rising damp? What are the others?
L'rising damp it can occur due to the lack of adequate waterproofing, for spills from breakage of hydraulic systems, for temporary flooding phenomena and for any other reason that involves the presence of humidity in the vicinity of the walls. It is not uncommon for even critical condensation phenomena or residual moisture from construction work to cause rising damp.All these variables are an ordeal for those who choose to solve the problem ofrising damp do it yourself or blindly, without the certainty of the cause and solutions.
4) It seems that 9 out of 10 interventions against rising damp fail: what is your experience?
There are cases of rising damp in which we happen to intervene in homes after the owner has already implemented resolutive interventions without any success. For example, because they have made new dehumidifying-restoring plasters, and / or one chemical barrier (chemical cut) or installed one of the many devices on the market to counteract theRising damp while the humidity was mainly due to critical condensation phenomena. In other cases it happened that they performed the same interventions (chemical cutting or inversion device) or used dehumidifying plasters while the humidity was mainly due to infiltrations from the pavement. These are all frequent situations to encounter when talking about rising damp and in all the owners have spent large sums of money in vain.
5) What do you propose for those who have the problem, or doubt, of rising damp?
To identify therising damp, but not only that, there is our service Eureka: the first in Italy to use a specific instrumental investigation system. Eureka provides for a certified analysis procedure with scientific instrumentation resulting from 18 years of experience in the field of remediation andrising damp which helps to make the right choices in a conscious way. The service is available almost throughout Italy and allows you to know the causes and solutions of the problem, even understanding if it is really solvable. In this way, even in the presence of rising damp, as with other problems, you can stop wasting money and time with temporary interventions and instead focus on resolving ones. It's not over, Eureka also “verifies” that the problem has been definitively solved.
6) if we realize we have rising damp then what are the first things to do?
First, if you suspect the presence of rising damp, I would perform a simple check of the plumbing system by verifying that the water contactor does not turn if water is not used in the house. This is true even if the system is new and already tested! The second thing to do, suspecting the presence of rising humidity, it is to rely on specialists who do not use their eyes to judge and advise but who have a precise method of instrumental analysis and knowledge of construction techniques. At this stage I therefore exclude all those who sell construction products. The third action consists in carrying out the remedial works indicated in the technical renovation project with adequate intervention times and then repeating the measurements of therising damp and compare them with the first to verify the effective resolution of the problem. The last step is to replace the plasters using materials compatible with the salts present in the masonry and paint the walls with paints compatible with the masonry and plasters chosen.
7) neglecting rising damp what risks does it entail?
When you neglect therising humidity there is a gradual and inexorable increase in problems and subsequent costs. In life, as with theRising damp, postpone troubleshooting or mistakenly want to hide it with plasterboard, counter walls, some restorative plasters, means finding yourself facing it again but more serious than before. In addition to aesthetic problems, in the case ofrising damp, it is necessary to consider the amplification of the maintenance costs of the property and the energy costs for its heating. In addition to the economic factors, it must be considered that therising damp it could negatively affect the quality of the healthiness of the premises up to create phenomena of really worrying molds.
For those wishing to further explore the topic ofrising damp together with Archimede Group and with the same accuracy and precision with which he spoke to us Stefano Pigatto you can also consult a valuable guide by downloading it for free. It is called "the 7 secrets to eliminate moisture" and to get it, just register on the Archimede Group website.
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