⏩5.2 Significant damage ⏩Repair kit ref. 111216 comprising abrasive paper, mastic and a repair strip. ⏩Clean and dry the exposed area. ⏩Cut off and remove the damaged PE. ⏩Preheat to approximately 60°C. ⏩Apply the mastic and smooth with a knife. ⏩Place the repair strip with a 50mm overlap on the edges of the cut area. ⏩Heat the strip with a gas burner until the heatsensitive paint changes color. ⏩Press the strip down wearing appropriate gloves. ⏩5.3 Minor damage ⏩In case of minor damage to the TT coating, use the PE repair stick (ref. 175507). Using a brazing torch, heat the stick until it drips onto the damaged area and then smooth over.
⏩Prepare the affected surface by removing the damaged and loose mortar. ⏩Brush to remove any dirt or loose particles and then clean the surface. ⏩Prepare the ZMU repair kit (DN 80 to 600: ref. 218842). •Mix the dry components •Add the liquid while stirring vigorously •Leave for five minutes and then mix again ⏩Dampen the surface. ⏩Fill with mortar using a spatula and then smooth the surface. (DN≥ 700: ref. 158009) ⏩Prepare the SIKADUR 31DW mixture with three parts R (resin) and one part H (hardener). Mix to an even consistency. Preferably position the area to be repaired facing downwards. ⏩Remove any damaged and loose mortar. Clean until spotless. Apply the mixture and compact to ensure the correct thickness. Smooth the surface. ⏩Minimum application temperature: + 5°C. Cover with plastic film or a damp cloth to maintain a high level of humidity and ensure that the mixture sets properly. Optimal drying time: 2 hr 30 min