SIRIOBARRIERA WR belongs to a new generation of catalyzed monomer silanes specifically formulated for the treatment of absorbent building materials, within whose capillaries it develops a water-insoluble but water vapor–permeable barrier that prevents capillary rise of moisture in masonry.
Fields of application: thanks to its high degree of penetration and protection, SIRIOBARRIERA WR is particularly suitable for dehumidification treatments against rising damp by means of a chemical barrier applied through low-pressure injection using special injectors. It can also be used as a non-film-forming water-repellent treatment for absorbent building materials.
Directions for use:
• Wall preparation: remove external wall coverings at the level of the treatment area. If possible, remove paint or wallpaper from the internal side in order to promote evaporation of moisture contained in the masonry.
• Hole dimensions: holes must be drilled as close to the ground as possible, never exceeding 20 cm above the internal floor level. They must have a diameter of 12 or 18 mm depending on the material used for injection and a depth reaching 10 cm from the opposite face of the masonry. The spacing between holes must be between 10 and 20 cm; when treating masonry thicker than 50 cm, or mixed or stone walls, two series of holes are required: one on the internal side and one on the external side of the wall.
• Injection:
– Equipment: MABI injectors, supplied by a pump capable of delivering a maximum pressure of 5 bar.
– Procedure: inject SIRIOBARRIERA WR for approximately 5 minutes at a pressure between 0.5 and 2 bar. Injection intensity and duration must take into account masonry characteristics (porosity and capillary diameter). As a rule, it is preferable to use low pressure and longer injection times in order to promote proper distribution of the product within the masonry.
• Plastering: to apply the finishing plaster, immediately after dehumidification we recommend using a highly breathable plaster such as our SIRIOBETON IDR.
Packaging: 210 L drum; 25 L and 5 L canisters.
Equipment: for product injection, we supply special injectors and pneumatic pumps.
