Sealing Water Leaks
Molds that thrive in wetness can harm your health, and a basement’s musty odor is not pleasant. Similar harm can be done by foundation walls in commercial buildings that have a water leak. Water may seep or flow through cracks or piercings in concrete walls. This problem is frequently caused by a breakdown in the waterproofing or a deficient drainage system, which permits pressure to build up on the exterior of the building. Water damage to foundation walls can be brought on by construction, environmental changes, and foundation fissures.
Excavating the affected area and fixing the waterproofing are the typical solutions when leaks are discovered in a building’s waterproofing. Positive-side waterproofing is a tried-and-true approach, but it’s not always practical. For instance, leaking floors are typically inaccessible from a building’s exterior.
Positive side waterproofing is frequently not practicable with zero-lot line construction due to the depth of the foundation and other limitations. Thankfully, more recent techniques allow contractors to completely stop active water leaks from the inside (negative side) of a building. These methods are increasingly used in residential construction because they are often less expensive than cleanup and excavation on the positive side of a leaky basement. Singaporean homeowners value the cheaper maintenance costs associated with maintaining their balconies, driveways, and restrooms. Among the options available to you are polyurethane grouts, polymer hybrids, and crystalline crack-sealing technologies.
Flowing water on the substrate’s surface can be an issue for materials with lengthy set times since it can dilute or wash the material away. The typical procedure involves injecting polyurethane foam to stop water leaks, followed by an elastic solid body resin injection. In the direction of the crack’s center, holes are drilled into the crack on alternate sides at a 45° angle. This method makes sure that at least every second drill crosses a subsurface crack, which has an unpredictable route. With a high-pressure injection pump and specialized valves called injection ports, polyurethane resin is injected into boreholes. Because they remain permanently elastic and do not lose their adhesive properties over time, polyurethanes are the recommended glue for attaching to concrete and brick.
In order to stop active water leaks, cement-based crystalline coatings are frequently utilized in conjunction with other techniques. These products, which are marketed by a number of businesses, are used as grout or coatings. They are waterproof without relying on surface bonding. Instead, the coating reactive chemicals penetrate the concrete by capillary tracts to become a permanent part of the mass and seal it off from moisture. Even when placed at the back of the wall, they are very strong.
Contact Alpha Builders, one of Singapore’s top waterproofing companies for polyurethane injections, to have your water leak analyzed.