Grouting in construction refers to the injection of pumpable materials into a structure to change its physical characteristics. Grout is a mixture of cement, sand, and water or chemicals used to fill gaps, repair concrete cracks, fill seams and gaps in tiles, seal and fill gaps for waterproofing, and stabilize soil. Grouting is also done to give extra strength to the foundations of load-bearing structures. In construction projects, grouts are usually classified into different categories, including cementitious non-shrink grout, polyester-based grout, epoxy grout, polymethyl methacrylate (PMMA) grout, and polyurethane grout. The type of grout used depends on the project objectives, performance requirements, and subsurface conditions. Grouting is used to provide additional strength to a buildings foundation and structure, repair cracks in concrete, fill gaps in tiles, seal joints, and stabilize soils. The grouting method to be used depends on the project objectives, performance requirements, and subsurface conditions. A successful grouting project requires detailed geotechnical investigation, identification of project objectives, and performance requirements, active monitoring during construction, and accurate estimation of grout volume and hole spacing. Sika has a full range of cementitious grouts, epoxy grouts, PMMA grouts, and polyurethane grouts to suit different project needs.