In some cases, rainwater and moisture can penetrate concrete structures and enter the building foundation. Moisture seepage through wall cracks is the most common cause of wall leakage. If moisture has been stored in the concrete wall for an extended period of time, it will cause a leak and other problems, such as damage to the concrete slabs and walls. Water pressure can push through the cracks, and temperature changes in the climate cause the structural cracks to shrink and expand. The worst-case scenario will have an impact on the building structure, so we devised a solution to wall water leakage.
Water leakage in the wall or building foundation should be treated from both the outside and inside. If water leaks through the walls are not detected early, they can cause severe structural issues that are difficult and expensive to repair.
A wall water leak could be caused by poor construction or a lack of maintenance over time. Wall water leakage may occur in Malaysia due to rainwater collected at the grout joint seeping through the damaged grouting between the wall and floor of the exterior wall into the interior wall during heavy rainfall. Waterproofing exterior walls is often overlooked by homeowners as unnecessary, but it is a good way to prevent serious water damage and structural damage that will be more difficult to repair in the future.
Cracks in the walls and floors are the most common signs of water leakage in the wall. A yellowish watermark stain appears on the wall, as do moisture droplets, dampness, bubbling or peeling paintwork, and pop-out concrete. They will appear in the ceiling, the toilet, the open balcony, and the rooftop. Water can penetrate through micro-cracks due to corrosion, causing the growth of fungi and other allergens that pose health risks to you and your family.
In our tropical climate, regular inspection to check for potential leaks is critical. There are several approaches to repairing a leak once it has been identified. Repair options include applying a waterproof sealant coat, grouting the joint, and injecting polyurethane grouting.
Waterproofing sealant coating is a process that involves applying a bonded layer of chemically reactive mortar agent to the concrete interior surface that is leaking water. Before installation, all coatings and reactive agents require that the substrate be free of permeating water. Before installing a coating or reactive mortar agent, chemical grouting, such as polyurethane injection, may be performed to stop active water leakage. Waterproof coatings must withstand both internal and external water-vapor pressure. These coatings are vapour permeable as well as vapour barriers.
Some waterproof coatings may react chemically with the existing concrete. This reactive treatment is applicable to damp concrete substrates that can be formulated to react with cement, resulting in non-soluble, silicate-based crystal growth in the concrete matrix’s pore space. These crystal-like growths in concrete can plug micro-voids, pores, and fine cracks, forming a water-resistant barrier.
Polyurethane PU Injection is a cutting-edge technology for chemical grouting. Injection techniques involve injecting reactive and active resins, as well as polymers, into cracks and joints in the concrete wall. A waterproofing grout can fill up the wall, crack lines, and joints to solidify the wall that is the source of the leak. This method requires no hacking and produces no dust, making it ideal for busy homeowners.