Repair & Renovation Guide 117 Seal the holes with: NOTES D-11 SUPER FAST FAST SETTING CEMENTITIOUS REPAIR MORTAR DS-247 RAPID SET REPAIR MORTAR WITH CORROSION INHIBITOR or Highly penetrating and hydrophobic polymer solution. It even penetrates into the capillary pores of the structure element and, through the saturation of its absorbency, prevents moisture penetration. Apply HYDROSTOP WALL PRO to create a hydrophobic horizontal barrier against rising damp in walls made of concrete, bricks, stones or cement blocks by drilling into the application element. It is also applied in case of removing the existing wall coatings. Surface preparation The product is applied by drilling and injecting it, with or without any pressure applied. The drilling points and the distance between them are determined by the composition and absorbency of the wall. 1. Natural flow: Begin at the base of the wall by drilling hole with a diameter of 16mm, no more than 25cm 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 holes of the second level are made at a height difference of 20-25cm from the first, exactly at the intermediate points, forming a w pattern. The product is injected with the special application bottle with the integrated nozzle, until the wall is saturated. 2. Pressurized application: This method is recommended for walls where moisture levels are high and structural elements that exhibit high mechanical strength. Drill holes with a diameter of 16-18mm, at a distance of 10-18cm from each other, at an angle of about 30°. The necessity for a second or even a third level of holes depends on the composition of the wall and the scale of the problem. With the use of special nozzles, as well as a suitable injection machine, the product must be applied until saturation. Allow for 24-48 hours to pass, and after checking the moisture levels of the treated element with a suitable moisture detector, determine if the process needs to be repeated. Application of HYDROSTOP WALL PRO after the removal of wall coatings Depending on the scale of the problem and the condition of the coatings, just drilling holes on the wall may not be sufficient and it may be necessary to remove the coatings, until reaching the structural element and to a height, as defined by the problem. In cases of particularly absorbent surfaces, the application of the one-component, flexible and fiber-reinforced brushable waterproofing mortar D-1 FLEX (p. 228) is recommended for optimal performance of the repair. Following, the drill points are selected and HYDROSTOP WALL PRO is applied, using one of the above methods. The advanced new technology solution to Rising Damp! HYDROSTOP WALL PRO Barrier against Rising Damp • The depth of the holes is defined as up to 5cm less than the total thickness of the treated wall. • Remove the dust from the holes with compressed air or with a commercial vacuum cleaner. • Do not seal the holes for a minimum of 48 hours. Seal them with either the fast-setting cementitious repair mortar D-11 SUPER FAST (p. 229) or DS-247 (p. 241).
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