Waterproofing

With practical expertise of every underground process, we know how important waterproofing is to support overall project requirements. Our broad portfolio covers every need in areas such as reservoirs, tunnels, underground stations, basements, storage tanks, and lift shafts.

Because our industry is constantly evolving, innovative development is needed to keep up with advances in construction methods. All our products use the latest high-performance technology for safe, efficient, and environmentally friendly use, helping to reduce project costs and carbon emissions. Wherever water needs to be stopped or retained, Normet has a product or a system to do it.

Liquid-applied coatings and membranes

In some cases, concrete structures may require more protection than only waterproofing. TamSeal cement- and polymer-based coatings are highly resistant solutions for waterproofing underground construction and water retaining structures. The cement-based range are polymer enhanced and simple and safe to use with high resistance to positive and negative water pressure. Polymer-based systems are for the most demanding environments and are available with resistance to specific chemicals, seawater, sewage, and water-borne contaminants such as chlorides and sulphates. Solar heat resistance and flexible and/or elastomeric characteristics are also provided in the TamSeal range.

Sheet waterproofing membranes

Normet’s range of tried and trusted sheet membranes are perfect for protecting large areas of concrete, foundation slabs, retaining walls, and tunnels. TamSeal 1500, 2000, and 2200 are self-adhesive, while the 3000C and 4000E are torch applied, all designed for a wide range of uses and environments and exhibiting excellent characteristics.

Integral treatments

Our TamSeal Admix range of waterproofing admixtures allows precise control of water in concrete or mortar. We provide expert technical advice to ensure the most effective mix design, which can also include TamSeal SBR polymer-based additives for improved cohesion, workability, and plasticizing qualities.

Water plugging

Normet TamCrete Plug and PolyPlug are fast-setting single component plugging mortars that harden when under constant water pressure, making them the perfect solution to prevent the ingress of running water or water seepage in basements, foundations, substructures, and tunnels.

The TamPur range of hydrophobic polyurethane foams give flexibility with variable reaction times and properties. The environmentally friendly foams quickly react upon contact with water, effectively sealing off water ingress in joints, brickwork, grouting, foundations, and more.

Concrete joint waterproofing

Any construction is only as strong as its weakest link, and failed construction joints in concrete are normally extremely costly and difficult to repair. Our re-injectable tube system can be built-in to the joint area, allowing for easy treatment after construction without disruptive drilling and grouting.

To effectively preventing water ingress in joints and cracks, the TamRez 440 and 440 Gel are surface-applied sealing strips and flexible epoxy-based sealants respectively, designed to accommodate continuous movement cycles.

Normet TamSeal hydrophilic waterstops meet the requirements for all types of structures, including those exposed to fresh or seawater. The waterstops combine traditional PVC benefits with the latest in hydrophilic technology, providing excellent resistance to high hydrostatic pressure.

Surface-applied penetrative treatments

TamSeal surface-applied treatments are designed to effectively resist the ingress of water and water-borne contaminants. Reactive treatments are applied through flooding or spraying and penetrate deep into the top layer of concrete, reducing water permeability and absorption and sealing cracks up to 2.0 mm wide.

Chemicals in crystallisation treatments combine with free lime and any moisture present in the concrete to form insoluble crystalline complexes, penetrating deeper over 28 days and improving sealing effects to the pore structure and cracks. The range includes treatments with potable water approval, able to withstand pressure greater than 12 bar.