Polyurethane are the most versatile plastics materials in use today, there are variety of applications and products that help enhance in our everyday lives. Polyurethane grouting is clean, fast, economical, effective for correcting settlement and instability, less disruptive than cement grouting.
Polyurethane grout has been widely used in different industries and has several useful and unique applications in waterproofing. Because of its expansive properties it could be used to minimize leak. And its low density and low permeability, it has also use as an insulator. Since polyurethane grout are fast reacting and expand within minutes, they have the advantage of application for polyurethane grouting being used in waterproofing. The material properties and application techniques of polyurethane have been developed and improved. Polyurethane has been used to repair pipeline leaks, repair foundation, concrete slab, fill void which are commonly use in bathroom/toilet, balcony, roof, and wet area.
Application for polyurethane grouting use on bathroom, balcony, roof, and all wet areas are liquid, are resin components mixed and injected under pressure below the area or structure, also know as polyurethane injection/PU Injection.
Due to its cleanliness, speed, and flexibility, it gives a cleanest concrete lifting and stabilization process. The injection equipment is mechanically connected to the slab or structure, no loose material is introduced to the repair area. Extruded material is easy to clean up because it cures quickly.
The process is less destructive, less messy, and complete with in a day of work, as only small hole size is drilled to carry out the injection. The material reacts with each other will expand and harden like a foam to seal around the repair area. Such foam stays as liquid for a short period of time while it dries up in progress.
This polyurethane grout will expand and spread out from the injected spot and get harden fast, it can exert more force during expansion. This process provides the basic concept of polyurethane formation, and it is reaction is irreversible. The cured product is environment friendly and flexible. Cured polyurethane foam entrapped bubbles to hold the porous structure. They are usually cured to flexible foam to seal leaks in joint or cracks and to repair leaking water. With the flexible properties, application for polyurethane grouting material reacts with moisture in the crack surface to form bond. The cured foam will not shrink over time and is consider as rigid foam. The result of permeation grouting is a hard, watertight, light weight mass.
Polyurethane grouting is best for large slabs because polyurethane can travel under the entire slab from one or two injection holes. This creates a more diffuse lifting force than cementitious grout. It speeds up work and less chance of cracking the tile, marble, granite, concrete slab, and tiled roof at bathroom, balcony, roof and on wet area. Fast reacting foam typically start to expand within a few seconds of injection, so they are good for concentrated lifting. This allows to lift extremely large areas which forces it into very small gaps under the slab. With its high expansion force and flexibility to spread under area of slab and structures before expanding, high density polyurethane can lift heavy slabs with ease. Additionally, a mechanical connection between the injection equipment and the slab, no material is exposed to the surface or surroundings. Automatic, mechanical valves on the injection equipment prevent leakage of material when not injecting. As small holes are drill therefore it is less dusty and messy compared to hacking and retiling repair.
Polyurethane grouting, as a mature technology, and widely use in waterproofing industry to stop water leakage. SWC Construction provides a free consultation on application for polyurethane grouting which enable you to know more about how we use this technology to repair and solve your leakage issue. Contact us now to get a non-obligation quotation.