Drying times of a wet wall;

One of the most common questions we are asked about walls that have rising damp and condensation is how long it will take to dry them out. There is no one quick answer because it depends on the extent of the damage and the type of wall and waterproof finish coats used, which is the main problem in the deterioration of wall structures. It could take a few days or a few weeks or even months.

Below is the Empirical Formula for determining the drainage time by Kettenacker's method.

T = Drainage time.

P = Absorption coefficient

S = Thickness expressed in centimeters.

T=P*(S)2

Coefficient

- Handmade bricks 0.28

- Cellular Concrete 1.28

- Structural Concrete 1.60

- Cement mortar 1.58

- Nobilium Thermalpanel thermal insulation 0.032

Example of calculation on 30 cm brick wall ;

 T= 0,28*(30)2

252 days

Example of calculation on 3 cm cement plaster. ;

T= 1,58 *(3)2

14.22 days

Calculation example on DWALL dehumidifying coating

T= 0.032*(1)2

0.064 seconds

These data change depending on the proportionality constant that is applied.

Capillary dampness can be recognized by various signs, e.g., unpleasant odor of dampness, mold growth, plaster falling off the wall, appearance of lime and nitrates on the wall surface,appearance of salt on the wall surface and exceptionally cold surfaces, etc.

Water in masonry when it rises up our masonry carries with it a high value of dissolved salts contained in the soil, and can rise up to 1.5 meters and more above the level of country elevations.

When the wall that has capillary rising damp begins to dry, salt deposits appear on the wall surface and decay of the wall plaster and wall structure begins. Freeze-thaw cycles accelerate this process leading to detachments to even substantial portions of plaster .

Capillary rise refers to the ability of a liquid to flow in confined spaces without the assistance of external forces. The height to which a liquid will rise in a capillary tube is determined by the balance between cohesive forces (attraction between the liquid molecules) and adhesive forces (attraction between the liquid molecules and the tube surface).

A damp wall loses 30 to 50 percent of its insulating power

Our answer as a cure for the pathology of walls plagued by rising damp and the application of dehumidifying coating Dwall.