116 Repair & Renovation Guide Highly penetrating and hydrophobic silicate solution. By injecting the product into walls, the capillary pores of the structural elements are sealed, preventing rising damp to penetrate into them. Apply HYDROSTOP WALL to create a hydrophobic horizontal barrier against rising damp in masonry or concrete structures, by drilling into the application element. In cases of existing damp, it is also applied by impregnating the surface. Surface preparation The product is applied by drilling and injecting it, with natural flow or with applied pressure. The drilling points and the distance between them are determined by the composition and absorbency of the wall. 1. Natural flow: Begin by drilling holes into the wall. The required hole size is 16mm in diameter, 15-20cm apart and at an angle of 30°-45°. Drill holes at two levels (one set of holes to be drilled up and one down). The depth of the holes is calculated to be less than 5cm from the overall wall thickness. Coat both sides of the wall with the waterproofing mortar D-1 to prevent HYDROSTOP WALL from leaking through. Pour the product into the holes until the wall is saturated without forcing it, just by using its natural flow. 2. Pressurized application: This method is suitable for walls that are greatly or even completely impregnated with water. Drill holes into the wall. The required hole size is 12-18mm, 10 to 18cm apart and at an angle of 30°. When working with low-absorbency walls, it is necessary to drill holes at two levels. Apply the product by using an injection machine until the product leaks from the surface of the wall. 3. Impregnation: The wall must be free of loose sections and dust. Apply at least three successive coats, without any dilution, until saturation. Each coat follows, as long as the previous one is still wet (wet on wet). In cases where hydrostatic pressure exists, first use HYDROSTOP WALL as a primer (double coat), and then apply the waterproofing mortar D-1 (p. 228) of DUROSTICK to seal the walls. Apply one coat of D-1, on both sides of the wall around the drilled area to prevent HYDROSTOP WALL seepage. DUROSTICK D-1 BRUSHABLE WATERPROOFING MORTAR FOR WALLS, FLOORS, BASEMENTS & ROOFS The solution to Rising Damp! HYDROSTOP WALL Hydrophobic silicate solution Damp in interior wall surface Damp in exterior wall surface
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