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Treating rising damp

After the preparatory work has been done and the protection for the underlayer has been applied, holes are drilled at 10 cm intervals just above the floor level.

These are then filled with a moisture-repellent substance. This substance is water-based (hydrophobic) and will mix with the moisture in the wall. The damper the wall, the faster it will take effect. Once dried, this will create a waterproof barrier.



The drill holes will then be sealed off with PU foam or cement.

Any new moisture will now no longer be able to rise into the wall. The moisture that is already present will still need time to dry. The length of time (in months) this will take is, on average, equal to the thickness of the wall in centimetres divided by two. A 20-cm thick wall will therefore need 10 months to dry out completely.

The drying process can be accelerated with good ventilation or by using a construction dryer.

In extreme cases, the plaster work will have to be replaced as a result of years of exposure to the salts that are present in the rising damp.

Once completely dry, the walls may be wallpapered or painted. After that, your rising damp problem may be considered solved once and for all.