It often happens that, in old buildings (But even in recent achievements), We are faced with stains, mold, or water condensation on walls and floors; we will try to indicate how to recognize a moisture problem.
These are the superficial symptoms of a problem upstream due to excess moisture at internal structures or ’ in ’ environment.
Solving this problem is not always an easy thing.
Intervene by treating surfaces with the many products on the market, is a ’ often useless or even counter-productive because We must act on the causes and effects.
You must first locate the sources of moisture, then intervene by deleting them or by limiting the action ’.
To briefly then, moisture can be:
from underground by capillarity
from cyclical floods
outer atmosphere (pouring rain)
external or internal atmosphere (condensation)
water contained in building materials
from internal damage (water disposal)
from concealed pipes condensation
from materials with different thermal conductivity and porosity that generate condensation.
Although it is possible to trace the origin of water type considering the appearance of stains, this manner of proceeding is unscientific and can lead to misdiagnosis, resulting in works that do not solve the problem.
Only through an instrumental measurement you can have objective data concerning the intensity and location of the water, whether on the surface or at depth, that are not otherwise perceptible to the naked eye.
If it is deemed necessary to instrumental analysis, You can follow some estimations:
– Persistent stains on the floor (generally caused by rising damp from underground)
– Persistent stains on the walls from the floor up (rising damp from underground).
– Strong erosion of the plaster in the middle or high walls (rising damp in the presence of ventilation).
– General haze and light, uniformly distributed (humidity from condensation).
– Isolated patches, tone varying from one day to the next (isolated materials alternating moisture or humidity from condensation).
– Slight erosion of the plaster at the bottom, immediately above the floor (humidity from condensation; occasionally slight rising damp).
– Salt efflorescence extended to cordon or to scrub (moisture from rain penetration or, more predominately, from rising damp).
– Salt efflorescence on bricks blocks (check for moisture detection).
– Mold (from any type of moisture even minimal, but mostly from three causes: Air stagnation, lack of sunlight, presence of organic base).
– Domestic mushrooms (from any humidity provided ventilation is missing and there is a source of cellulose).
If you diagnosed the humidity lifts, you will need to check if the water from the walls comes from inexhaustible sources (as water tables), or stagnation of rain water or water leaks.
The decline left from underground is generally impressive, distributed evenly and with little variation over time.
Since then dry up the source, There is a need to limit the salt content allowing the ascent along the walls (by IgroDry).
When the water comes from water dispersed as stagnant due to bad rainwater disposal or MILF, the damage is less extensive and more localised, with changes over time. in this case it is convenient to discover the loss and intervene directly on it (then speed up the drying ’ with IgroDry).
Moisture condensation is more difficult to understand and, generally, It distributes on the coolest areas of the walls and the environment.
Condensation is affected:
– the air humidity
– the temperature and room ventilation
– the type of materials that form the structure
– surface finishes.
The phenomenon can be distinguished in winter and summer condensation.
The internal temperature in the winter is much higher than the outside temperature, This causes a shift toward the inner surface of the dew point (the point where the steam condenses). You can thus form a wet glazing if the Interior finish materials are waterproof, or macchiature if these are more absorbent.
Summer condensation building instead on walls with great thermal inertia, on which the summer air (with high absolute humidity) tends to condense.
The phenomenon occurs as we lay a bottle with cold water on a table and the air humidity condenses on the glass, adding.
For all these problems is IgroDry able to solve or mitigate the problem; a efficient consulting service may indicate the most appropriate action ’ should be applied in order to solve the problem as soon as possible; No demolition, without dust or invasive and expensive masonry work.