Concrete Waterproofing
Specification of Concrete Weatherproofing Materials
Waterproofing is often a critical part of the design criteria of civil engineering structures and infrastructure. At Flexcrete, we offer a wide range of high performance solutions for concrete waterproofing of substrates both below ground and on floors, roofs and deck areas, providing exceptional protection from the outset. As well as providing exceptional concrete waterproofing, our cementitious coatings are extremely user friendly and enable the strictest of health and safety guidelines to be met on site. With water-based, non-hazardous formulations, they rapidly cure without the release of strong odour or hazardous solvents and can be safely applied in public areas. For deck areas, our coating systems rapidly cure to withstand foot traffic just six hours after application. When used internally as a levelling waterproof layer on damp substrates, resin, sheet vinyl or carpet flooring can be installed without waiting 28 days for concrete to cure.
Solutions for Concrete Weatherproofing
Reinforced concrete is not as durable as once anticipated and further protection is often necessary in order to achieve the desired design life. Download our information sheet for more details about our materials.
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Advanced Cementitious Coatings
Flexcrete’s cementitious coating range includes Cementitious Coating 851, Cemprotec Elastic and Cemprotec E-Floor. Typically applied at just 2mm, the coatings provide the equivalent of up to 120mm concrete cover and resist positive and negative water infiltration at pressures up to 10 bar.
Able to be applied to damp surfaces, these coatings are ideal for application to ‘green’ concrete and provide years of effective resistance to water ingress, abrasion, chloride ion penetration and aggressive chemicals in areas subject to extreme trafficking.
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Concrete Waterproofing Problems and Solutions
- Rapid Waterproofing & Levelling of Floors
- Solvent-free Waterproofing
The Problem
During fast-track construction, it may be necessary to waterproof and level concrete floors to ensure there is no water damage to any underlying areas and no inherent health and safety risks.
The Solution
Concrete substrates can be waterproofed with our two component epoxy and cementitious modified, water-based polymer toppings, Cemprotec E-Floor (2mm) or Cemprotec E-Floor HB (3-6mm). They rapidly harden to provide a hard-wearing and durable surface. If abrasion and skid resistance is required, Cemprotec EF Grit can be incorporated. Cemprotec E-Floor systems can be applied without risk of osmotic blistering to ‘green’ concrete without waiting 28 days for the concrete to cure.
The Problem
Waterproofing to be carried out in confined spaces or close to existing occupied buildings where the use of solvent based materials is forbidden due to health and safety constraints or the impracticality of evacuating nearby buildings.
The Solution
Cementitious Coating 851 is a water based, two component polymer modified cementitious coating that can be applied to damp or ‘green’ concrete substrates. Rapidly curing with no odour and without the release of hazardous solvents, it forms a durable waterproof film which will resist 10 bar hydrostatic pressure (100m head of water). In areas where differential movement between dissimilar substrates is expected, Cemprotec Elastic presents the ideal solution as it can accommodate the formation of new static cracks up to 2.4mm.
Concrete Waterproofing Products
Find out more about Flexcrete’s range of concrete waterproofing products below:
| Cementitious Coating 851 | Structural waterproofing. Protection from chloride ingress and carbonation. Reinstatement of cover. |
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| Cemprotec E942 | Waterproofing and protection of concrete where enhanced chemical resistance is needed. Stand alone anti-corrosion coating for ferrous metal. |
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| Cemprotec EF Primer | Single component sealer and primer for floors, prior to the application of the Cemprotec range. |
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| Cemprotec Elastic | Waterproofing and protection of concrete where further movement is expected. |
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| Bonding Bridge 842 | Advanced surface impregnant which ennhances bond on high porosity substrates. |
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| Monolevel 844SP | Engineering quality fairing coat to reinstate cover and provide a fair faced, waterproof and anticarbonation finish. |
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| Monolevel RM | Rendering and profiling of concrete to provide a fairfaced render finish. |
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Concrete Waterproofing Projects
Take a look below at some of Flexcrete’s latest concrete waterproofing projects, or browse the project profile pages to find more.
Project Profile
Project Location: Shoreham Reservoir, West Sussex
Flexcrete has provided Southern Water with an approved waterproofing solution to treat the brick soffits of Shoreham Water Service Reservoir.
Project Profile
Project Location: Crossrail Bond Street Station, London
Complete repair and protection solution provided for a major Crossrail project, including lift shaft waterproofing, concrete repairs, coving and flooring works
Project Location: Heathrow Main Access Tunnel, Heathrow Airport
Flexcrete’s products were chosen for the waterproofing of expansion joints inside the Heathrow Main Access Tunnel, Heathrow Airport.