Damp is a problem found in the walls of many buildings, particularly those built before the use of protective membranes in the foundations.
Damp is one of the main causes of building deterioration, particularly in older constructions. The presence of water in the walls can lead to significant problems:
For the reasons explained above, it is best to deal with damp problems as soon as they appear. Correct identification of the issue is equally critical, allowing the root causes to be pinpointed.
At this point, the expert will be able to establish which of the four main types of damp are behind the damage (atmospheric humidity, condensation, rain penetration and rising damp) and what the solutions are.
This is one of the most common problems and also one of the most difficult to eradicate. It is caused by the transmission of water via capillary action with a process similar to osmosis.
This leads to water and dissolved salts rising up through the walls. In addition to negative aesthetic impacts, this type of damp not only causes deterioration of the walls themselves (swelling and disintegration of plasterwork and mortar joints, formation of mould, corrosion of bricks, etc.) with associated effects on mechanical performance, but also creates bad odours and health risks for inhabitants due to the formation of mould. This is the most dangerous type of damp because it is self-sustaining, with water rising via capillary action from a constant source. Due to the physical nature of the phenomenon, the whole body of the material is affected and it can lead to early degrading of the structure if underestimated.
Rising damp due to capillary action is caused by the attraction of water to porous materials. A newly built wall is completely uniform within. More specifically, the positive and negative electrical charges present in all solids are uniformly distributed through the mass of the wall. Considering that water is itself polarised, becoming an electrical conductor when it contains salt ions, acids and bases, and that the microstructure of the constituent materials (bricks, tuff, mortar, etc.) feature microcapillaries, the base of a wall standing in water acts as a solid soaked in an electrolyte solution
In the capillaries, which are small channels with dimensions in the order of mm2 , absorption occurs at the interphase of dissolved substances which, as they are charged ions, create an electrical field. More specifically, as the construction materials are inert solids (silica, quartz, carbonates and similar) the positive charges (cations) progressively accumulate on the surface of the aforementioned capillaries, while the negative charges (anions) are able to move in relation to these. The water absorbed by the walls contains mineral salts (nitrates, sulphates and chlorides) and other substances contained in the earth below, causing the typical characteristics on the surface of the wall as water evaporates on contact with the air, including: marks, rings, flaking of paint, mould generating unpleasant odours, efflorescence and detachment of plasterwork. The filtration of salts through walls and crystallisation within them makes the structure even more hygroscopic.
For a clearer idea, consider that just eight grams of salt can absorb one litre of water. Generally, capillary rising damp occurs until the point at which the evaporation rate is equal to the absorption rate of the wall. Problems of this type are found predominantly in buildings surrounded by ground water (the earth is directly in contact with the external wall) in old buildings with very absorbent mortar, and particularly in cellars and basements. This is why these rooms often feel significantly cooler than upper floors.
The Damp Protect dehydration solution does not require building work on the existing walls to be protected.
The costs of investing in this solution are far lower than the comparative costs required for alternative measures which require structural demolition and rebuilding work.
The Damp Protect dehydration solution is effective in any type of structure: external, internal or dividing walls.
The Damp Protect dehydration solution does not require the use of chemical or synthetic substances.
The Damp Protect dehydration solution improves the air quality in the building in question.
The Damp Protect dehydration solution is designed to be carefully adapted to the specific requirements of the materials involved.
Device featuring control panel with status indications. In case of power outage, the device switches to battery power and this is indicated via an automatic status light. No setting or maintenance is required.
The Damp Protect dehydration solution has been in use by trade professionals for many years because it is extremely effective and undeniably good value, and now it is also available for use in the residential sector.
The tried and tested technology used by the Damp Protect solution guarantees completely! effective resolution of all rising damp problems.
This advanced solution targets rising moisture, ensuring long-term protection for your structure. Keep your property dry, durable, and free from damp-related damage with PROsystem. Install PROsystem and save your building from capillary damp.
+1 949 234 8111
scott@dampprotectsystems.com
Mon – Sunday: By Appointment
© 2024 All rights reserved by Damp Protect Systems