Impermeabilizar muros sometidos a pequeños movimientos

Waterproofing of walls subjected to minor movement

The instability of walls in which minor movement occurs could give rise to fissures or cracks, where through water could be infiltrated.

The waterproofing of these types of walls must be carried out using elastics products that resist these minor movements and prevent the penetration of water.

Preliminary analysis

In this case, it is important to use a good waterproofing mortar that is capable of absorbing any type of movement of the substrate that could give rise to a discontinuity in the watertightness of the wall.

The formation of small fissures in the wall are water entrance routes. Therefore, we must use an elastic waterproofing agent that is capable of supporting and correcting these discontinuities.

Technical considerations

As a previous step, we must adequately prepare the substrate.

To this end, we must:

  • Firstly, wait for the subterranean walls to be stabilized.
  • Adequately clean the substrate, ensuring that it is free from surface grout and residue. Make an acidic cleaning with GECOL Desincrustante and subsequent rinsing with water.
  • Subsequently, fill in the cavities and voids of the concrete substrate with a repair mortar of the GECOL Reparatec game.
  • Correctly treat special points (angles, corners, fissures, etc.).


Once the substrate has settled, we will use GECOL Imper-E o GECOL Imper-R, which are elastic cementitious waterproofing membranes capable of supporting minor movements that could give rise to fissures or cracks. In addition, GECOL Imper-R contributes a fast setting to the system.

Recommended products

Concrete repairers



Structural- fast setting



Fast setting

Thin layer from 2 to 5 mm

Thick layer 10 mm


Fast setting


Acid cleaner

Warnings: The data provided by this Constructive Solution were prepared based on standard onsite installation processes. However, we recommend that you consult our Technical Department in the event of any specific circumstance