We offer basement renovation and waterproofing services for structures affected by moisture and salt damage.
Our primary materials are waterproofing systems, renovation plasters, and mortars from the German manufacturers Schomburg GmbH and Köster Bauchemie AG, all of which meet the standards of the WTA (International Association for the Science and Technology of Building Maintenance and Monument Preservation).
For internal waterproofing of existing buildings, mineral-based waterproofing systems must be used. These systems offer excellent adhesion to mineral surfaces and will not detach over time, even under wet conditions, dampness, or negative water pressure.
Surface preparation is critical before installing any waterproofing system. All loose and deteriorated layers must be thoroughly removed using methods such as sandblasting, grinding, or ultra-high-pressure water cleaning.
High-quality waterproofing materials can only be applied to substrates that are solid, strong, and free of adhesion-impairing substances.
Old, soft plaster layers must be completely removed, joints cleaned, and loose particles brushed away.
The first step involves filling the joints using a high-compressive-strength waterproof mortar (minimum 25 MPa).
Once the joint mortar has cured, the surface is ready for the waterproofing installation. Depending on the system used, a primer may be necessary, though in some cases it can be omitted.
Regardless of primer use, it is highly recommended to apply salt-binding agents to strengthen the substrate and limit salt migration.
For the waterproofing layer, rigid mineral waterproofing slurries that are resistant to negative pressure are used, such as KÖSTER NB 1 Gray or Schomburg AQUAFIN 1K.
Waterproofing must always be applied in two layers.
After a curing period of at least 7 days, the waterproofed surface can be covered either with a WTA-certified renovation plaster system, which helps bind salts crystallizing on the surface and greatly extends system durability, or — if salt exposure is minimal — with standard cement-based exterior plasters.
Gypsum-based plasters, fillers, and water-vapor-impermeable paints must not be used. The entire system must remain breathable, allowing water vapor to pass through.
In addition to wall waterproofing, we also carry out sealing of pipes and other conduits. Both KÖSTER and SCHOMBURG offer a variety of solutions for these applications.
Our core services for basement renovation include:
Sealing water leaks with fast-setting mortars
Internal basement waterproofing using mineral waterproofing systems
Eliminating salt damage
Masonry injection to prevent capillary moisture
Installation of renovation plaster systems
We are proud to partner with Primostar OÜ, who supplies us with most of the essential waterproofing materials.
