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Protection against Capillary Rising Damp

Protection against Capillary Rising Damp

Old buildings tend to get damaged and soaked with humidity. Capillary rise is a common damage factor for old buildings if waterproof materials are not used adequately during the time of construction of the building. Sometimes we can see the old buildings are built on the ground without any provision of waterproof protection. Generally, the rise of damp occurs as a result of water in the ground beneath or next to the walls, rising through the fabric of the wall, whether it is made of brick, block or stone. 

Gradually the water level comes on the surface of the wall, as a result of capillary action where water is sucked in the brick or stone through a tiny opening such as a tube or hole. It gradually spreads under the wall of your house and spread through a large amount of space. Finally, it results in a visible crack on the wall, which can later cause irreparable damage. So, here we are going to present a few helpful remedies for you to treat the rising damp:

Capillary Humidity Treatment

In this process, a mineralizing liquid is injected through drilling, in the outer face of the wall. The mineralized liquid polymerizes with the internal protection barrier preventing the entrance of the water by capillarity. The Mineralizing Liquid consists of potassium silicate and a potassium methyl siliconate which produces potassium carbonates by reacting with the CO2 of the atmosphere. This reaction between potassium silicate and atmospheric CO2 on the capillary wall produces an extra layer of silica to narrow capillary diameter, which prevents the opstijgend vocht

But this process is only applicable to walls with a moisture level of less than 50-70%; otherwise, it is not effective. Therefore, the wall needs to be clean, dry and free of dust, grease, salt, and other contaminants. Depending on the condition of the wall, the area of the drilled hole will be different. The minimum depth of the holes must have a thickness of 2/3 times of the walls. Then the hole is cleaned for this procedure of mineralized liquid injection. Accordingly, fill the hole several times with the mineralizing liquid, and then leave it for at least 24 hours. However, in case of necessity, you can also proceed by plugging the holes with a conventional mortar and plastering again. 

How to Treat the Wall after Mineralizing?

Once you are done with the mineralizing procedure, you can proceed with any kind of repair to fix the wall. Now, check the condition of the plaster, if it is okay or not. In case it is fine, verify if there are any mold and salt deposits on the wall. It is very important to remove them before redecorating. If the plaster is not in good shape then, it needs to be stripped off to 30cm above the highest damp point on the wall. Once it is done, your next option is to brush the wall down by applying some Anti-Mould cleaner or Salt Neutralizer. After finishing this, give the final touch of re-plastering.

Thus, following these methods, you can protect your walls from getting damaged by Capillary Rising Damp.


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