Chemical Grout Injection: When it is not feasible to excavate the outside walls of a structure in order to apply a waterproofing membrane due to access, finished landscaping, or budget restrictions, chemical grout injection may be the answer. Chemical grouting is performed by first drilling a series of holes located adjacent to the leaking cracks, then installing grout ports and pumping a chemical grout that reacts with the water present in the crack or substrate, which creates a chemical reaction. This reaction causes the liquid grout to expand and form a gel material that fills voids and cracks, thus creating an impervious seal against the substrate sides, which stops water access through the joint. Pro-Tec has successfully performed chemical grout injection at interior foundation walls, floor slabs, elevator pits, sewer pipes and parking structures.
Epoxy Injection: Epoxy injection is used to make structural repairs to non-moving cracks in concrete, masonry and metal substrates. When done correctly epoxy injection seals the cracks and restores the monolithic structural nature of a substrate. High strength epoxies can return a substrate to its original design strength but will not increase load-bearing capability. Epoxy injection is considered a restoration system as well as a waterproofing system. It can restore substrates to a sound condition prior to waterproofing application. Pro-Tec has performed epoxy injection on poured concrete walls, footings and decorative facade elements on numerous projects throughout the tri-state area.