Rising damp


Damage: humidity in walls

Saltpeter, mold and fungus

A high humidity rate significantly promotes the development of molds and fungi.
The saltpeter is deposited on the surface of the wall in the form of white crystals of cottony appearance.

Blistering and degradation

Water, migrating to the inner walls, causes the blistering of decorative paints and coatings.
The plaster loses its hardness and adhesion

Treatment method by injection

The water in the soil rises naturally into the masonry and causes important degradations. Act in depth, for lasting results.


To prepare the treatment, all coatings have to be removed; and brittle or non-adhesive parts located into the injection zone have to be brushed.

The injection holes have to be drilled on the outside, following a horizontal line or are placed in a staggered row in order to create a double chemical barrier.

Injection-packers’ implementation

Plastic injection-packers are inserted into each injection hole, using a hammer and a mounting tool. The packers have been developed to keep enough pressure during and after the injection; to obtain an optimal diffusion of the product into the thickness of the wall. It’s recommended to use diffusing tubes with the packers. Diffusing tubes are driven into the thickness of the wall and adapt themselves at the bottom of the packer.

Rising damp injection


The product is injected with low pressure thanks to a gun and the corresponding MABI pump.

The used pressure has to allow a good product penetration avoiding it to leak outside. For each injection, the injected product quantity should be controlled in order to respect the manufacturer’s chemical product instructions (product quantity to be injected per linear meter).

Rising damp rénovation


The product reacts in the masonry to become hydrophobic resin and create a barrier.

After 2-3 weeks the moisture flow is stopped by the chemical barrier. It is then necessary to facilitate at the maximum the drain conditions of the treated masonry (aerate, warm up and dehumidify). Regular monitoring of humidity can follow the progress of drying and renovations begin only when the wall reaches a humidity level inferior to 5%.


treatement by injection mabi catalog

The methods are given for information purposes only.

Always refer to the local legislation and to the chemical manufacturer’s label before starting any job.

Always wear the Personal Protective Equipment (PPE) required and officially approved for chemical handling, including gloves, coverall, respirator and protective eyewear.