Water penetration can lead to structural damage and shorten the lifespan of a building, affecting areas such as garages and basements in homes. Therefore, it is vital to ensure the waterproofing process is completed correctly when building a basement and garage. Resin injection serves not only for crack repair but also as an excellent waterproofing technique. Resin injection is effective for waterproofing a variety of surfaces, such as wood, concrete and masonry. Additionally, resin can be utilised to seal leaks by applying resin around the leak and moulding it appropriately, into the suitable shape. If you'd like to find out how to waterproof a basement, please read on!
Resin injection waterproofing is a technique that entails injecting specialised resins under high pressure into cracks and voids found in concrete or masonry structures. This process effectively creates a watertight seal by filling these spaces, preventing water from penetrating or escaping the structure. The resins used in this method are designed to react with moisture, expanding and solidifying to form a durable barrier that protects the integrity of the building materials.
The chemical reaction triggered by resin injection is rapid, producing results that are instantly noticeable. The resin revitalises the surface of concrete, brickwork, or stonework, restoring them to their original strength. It also creates a robust waterproof barrier that effectively prevents any further water damage, ensuring the longevity and durability of the structure.
So, can you waterproof a basement from the inside? Yes! See below for the guidelines for applying resin to waterproof a surface:
- Prepare the surface: Thoroughly wash the surface using water and a gentle detergent to remove and dirt, grease, debris etc and then allow to dry. Next, sand the surface down with a medium grit sandpaper to create a slightly rough texture which will help the resin adhere. After sanding is complete, vacuum the surface.
- Apply primer: Choose a primer the is specifically designed for use with resin to ensure optimal adhesion and performance. Before applying, make sure the surface is completely clean and dry and follow the manufacturer's instructions. This step is crucial as it helps the resin bond effectively to the surface, enhancing the durability and longevity of the waterproofing layer.
- Mix the resin: Mix the resin components thoroughly by following the manufacturer instructions. This typically involves measuring and combining the resin and hardener in the correct proportions to ensure the mixture achieves the desired consistency and performance.
- Apply the resin: Spread the resin evenly across the surface, avoiding any gaps or uneven coverage. Apply several layers to ensure all pores are sealed.
- Allow to cure: The resin has to cure for at least 24 to 36 hours, ensuring it has ample time to harden and form a strong, protective layer. During this period, it is important to maintain a stable environment, free from disturbances and minimising humidity, to achieve optimal results.
Three primary types of resins exist, each possessing distinct qualities suitable for various project needs. These include:
- Polyurethane (PU) resins- there are ideal for temporary water sealing, as they rapidly react upon contact with water by foaming and expanding to halt the flow within the available space.
- Acrylic resins- these resins are effective for water sealing and are particularly advantageous for installation through injection hose systems, providing a permanent seal for fine cracks and joints in concrete structures.
- Epoxy resin- these are well-suited for structural repairs and are perfect for fixing dry cracks in the absence of water flow, as they create a solid seal once cured. Water-based epoxy resin is suitable for waterproofing and safeguarding concrete or masonry. It can be applied in moist conditions and results in a durable, non-toxic, waterproof finish.
Here at CES Hire we have the machinery you need to waterproof a building, including three types of resin injection pumps and we also have the InoBeam M8, supplied with a waterproofing slurry kit. You also mustn't forget the basement waterproofing membrane, these form a barrier to prevent water from passing through.
First up is the Resin Injection Hand Pump from Refina. The Resin Injection Hand Pump is a lever operated pump for injecting resin directly from a container. Produced in brass for chemical resistance, this pump will inject pourable resins and chemical grouts at a pressure of up to 25 bar, 350 psi. The recommended maximum grain size is 0.3mm and has an output of 0.5 litre per minute.
Next up is the A400 Eco Resin Injection Set 110v which is a high pressure resin injection device with a working pressure of up to 230 bar. It can be used on any construction site without additional compressed air, thanks to the power supply connection. This device is ideal for injecting or repairing cracks with PUR resins, epoxy resins, silicates, sponge protection agents and wood preservatives. An inlet valve with a valve dabber simplifies commissioning, even if the valve cone should become stuck. The working pressure is adjustable from 0-230 bar on the pressure regulator of the appliance. The machine output is 2.5 litres per minute.
Finally, we have the BMP80.25 INOX 1:1 Resin Injection Pump, which runs on air and they come completely ready for injection. The machine is suitable for explosion proof areas and the pump automatically stops after reaching the maximum pressure. The pressure is adjustable and there are 3 suction systems- for A, B and flushing (more on this further down in the blog). All material carrying parts on this machine are mad of stainless steel V4A and the machine is known for its long lifetime and relatively low cost maintenance. To make it even more user friendly, the valves can be rinsed separately. The mixing ratio on this machine is 1:1 fixed.
Let us know by giving us a call if resin injection is something you would like to get in to or know more information on! You can give us a call on 01494 715472.