Products and solutions
Concrete admixtures and additives
Fosroc's concrete admixtures primarily fall under the Conplast brand, encompassing water reducers, accelerators, and superplasticizers that enhance the workability, strength, and durability of fresh concrete mixes.[21] Water reducers like Conplast P211 disperse cement particles to improve mix consistency, enabling water reduction while maintaining workability and increasing compressive strength.[22] Superplasticizers, such as Conplast SP430 and Conplast SP561S, provide high-range water reduction of 20-30%, producing self-compacting concrete with reduced segregation, ideal for applications requiring high flowability.[23][24] These products are formulated to comply with ASTM C494 standards, including Types A, D, and G for water-reducing and retarding effects.[25]
Accelerators in the Conplast range, including Conplast NC, promote rapid early-age strength development without introducing chlorides, supporting faster formwork removal and construction cycles in infrastructure projects.[26] In hot climates, retarders like Conplast R and Conplast P509 extend initial and final setting times, controlling hydration rates to prevent flash setting and ensure uniform placement in high-rise pours.[27][28] For instance, Conplast P509, based on lignosulphonates, maintains slump for extended periods in ambient temperatures exceeding 30°C, reducing labor needs in demanding infrastructure environments.[28]
Fosroc also develops cement additives under the CEMAX technology to optimize production processes, focusing on grinding aids that enhance mill efficiency and reduce energy use.[29] Products like Cemax 327 serve as liquid dispersing agents, preventing particle agglomeration during grinding to improve output and lower specific energy consumption.[30] These additives improve cement fineness and flowability, contributing to higher-quality concrete with better long-term durability in high-rise and infrastructure applications.[31] Overall, Fosroc's admixtures support sustainable construction by minimizing material waste and energy inputs while meeting performance demands in challenging conditions.[32]
Waterproofing, sealants, and jointing
Fosroc provides a comprehensive range of waterproofing systems, sealants, and jointing solutions engineered to safeguard structures against water ingress, environmental degradation, and structural movement. These products form essential barriers in post-construction applications, ensuring long-term durability for infrastructure such as buildings, bridges, and underground facilities. The lineup emphasizes flexibility, adhesion, and resistance to harsh conditions, with options tailored for both above- and below-ground use.[33]
Fosroc's waterproofing portfolio includes liquid-applied membranes designed for seamless coverage on complex surfaces. For instance, Nitoproof 210 is a single-component, water-based bituminous rubberized membrane incorporating root inhibitors, ideal for protecting foundations, retaining walls, basements, and planter boxes from groundwater and soil contaminants; it is applied by brush or roller in multiple coats to form a flexible, impermeable layer. Similarly, Nitoproof 610 and Nitoproof 750 are single-component polyurethane membranes offering thixotropic properties for vertical applications on foundations and roofs, providing UV resistance when topped with compatible coatings and chemical compatibility for industrial settings. For high-traffic areas like balconies and podiums, Nitoproof 410 serves as a two-component, polymer-modified cementitious membrane that can be trafficked and enhanced with a UV-protective top coat. Spray-applied options, such as Polyurea WHE110—a hybrid polyurea-polyurethane system—enable rapid installation on large-scale projects like tunnels and roofs, delivering elongation up to 400% for accommodating substrate movement while resisting abrasion and chemicals. These systems are typically installed over primed surfaces using methods like brush, roller, or spray equipment, with primers such as Nitoprime 115 ensuring optimal adhesion.[34]
In addition to membranes, Fosroc incorporates crystalline waterproofing technologies for enhanced penetration and self-healing properties in concrete structures. Products like Vandex Concrete Grey form a crystalline slurry applied to surfaces in basements, tunnels, and water tanks, where active chemicals react with moisture and cement hydration products to block capillary pores and provide permanent waterproofing against hydrostatic pressure. This approach complements liquid membranes by offering integral protection without altering the concrete's appearance, suitable for below-grade applications where durability against water migration is critical.[34]
Fosroc's sealants and jointing solutions, particularly under the Nitoseal brand, address expansion joints and movement in facades, bridges, and highways. Nitoseal MS250, a silyl-modified polymer hybrid sealant, provides high flexibility and UV resistance for non-trafficable vertical joints in building facades, accommodating up to 25% movement while adhering to substrates like concrete and metal; it is gun-applied using standard sealant guns after priming. For traffic-exposed areas, Nitoseal PU400 offers medium-modulus polyurethane with water immersibility and resistance to fuels and oils, making it suitable for highway joints and bridge decks, where it withstands dynamic loads and chemical exposure. Nitoseal SC600, a silicone-based sealant, excels in aggressive environments like chemical plants due to its superior compatibility with harsh substances and compliance with AS4020 standards for potable water contact. These sealants feature non-sag properties for overhead application and cure to form durable, weatherproof bonds.[34][35]
Joint fillers from Fosroc support sealant performance by providing compressible backing in expansion joints for civil engineering projects. Expandafoam, a closed-cell polyethylene foam, is used in concrete pavements and masonry walls to prevent sealant extrusion under compression, offering consistent recovery after deformation in applications like highways and reservoirs. Hydrocor Corkjoint, a self-expanding cork-based filler, is specifically formulated for water-retaining structures such as tunnels and basements, where it maintains joint integrity against water pressure while allowing sealant adhesion on the surface. These fillers are installed by simply inserting them into joints prior to sealant application, ensuring a balanced seal that accommodates thermal and seismic movements without debonding.[34]
Overall, Fosroc's waterproofing, sealants, and jointing products can be integrated with concrete admixtures during initial pouring to enhance overall barrier efficacy in demanding environments.[33]
Concrete repair, grouts, and protective coatings
Fosroc offers a range of Renderoc polymer-modified mortars designed for structural concrete repairs, providing high bond strength and compatibility with existing concrete substrates. These mortars, such as Renderoc HB and Renderoc HB40, are shrinkage-compensated formulations that enable high-build applications up to 80 mm thick, suitable for patching spalls and defects in reinforced concrete structures while maintaining structural integrity. The polymer modification enhances adhesion and flexibility, reducing the risk of delamination in vertical and overhead repairs, and they comply with EN 1504-3 standards for structural repair products.[34][36]
Fosroc also provides bonding agents under the Nitobond series, such as Nitobond EP and Nitobond SBR, which improve adhesion between new and existing concrete surfaces, facilitating repairs and overlays in horizontal, vertical, and overhead applications. These epoxy- and polymer-based agents ensure strong mechanical bonds and are suitable for use in demanding environments, including those requiring immersion resistance.[37][38]
For grouting applications, Fosroc's Lokfix series provides precision anchoring solutions, including non-shrink polyester resin grouts for securing bolts, bars, and machinery bases in foundations. Lokfix S and Lokfix P variants offer high compressive strengths exceeding 75 N/mm² after short curing times, ensuring corrosion-resistant fixings in concrete, rock, or masonry with diameters from 10 to 51 mm.[39] These grouts are particularly effective in heavy-duty installations, such as equipment bases, where non-shrink properties prevent settlement and maintain load distribution over time.[34]
Fosroc's protective coatings include epoxy and polyurethane systems tailored for safeguarding steel reinforcement and concrete surfaces against corrosion and environmental degradation. Epoxy-based options like Nitocote EP405 provide a solvent-free, non-toxic barrier with excellent chemical resistance, ideal for lining pipes, tanks, and structures exposed to harsh industrial conditions.[40] Polyurethane coatings, such as Dekguard PU, deliver UV and abrasion resistance for exterior applications, forming a durable film that withstands aggressive atmospheres while allowing substrate breathability.[41]
In rehabilitation projects, Fosroc integrates corrosion inhibitors and anti-carbonation barriers to extend the service life of aging infrastructure. Products like Nitoprime Zincrich serve as anti-corrosion primers for rebar, inhibiting chloride-induced and carbonation-related deterioration by forming a passivating layer.[34] Anti-carbonation coatings, including Dekguard E2000, act as barriers to CO₂, chlorides, and moisture ingress, with elastomeric properties accommodating substrate movement in bridges and marine structures.[42] These solutions are often applied post-repair to provide comprehensive protection, sometimes in conjunction with waterproofing systems for enhanced durability.[43]
Flooring and anchoring systems
Fosroc offers a range of industrial flooring systems designed for high-performance environments, including self-leveling epoxy toppings such as Nitoflor SL1000 and SL3000, which provide seamless, durable surfaces capable of withstanding mechanical loads in warehouses and factories.[45] These products feature excellent chemical resistance, making them suitable for demanding sectors like food processing and pharmaceuticals, while anti-slip coatings like Nitoflor FC150 ensure safety by delivering skid-resistant, hardwearing finishes that maintain traction under heavy foot and vehicle traffic.[45] Rapid-curing options, such as Nitoflor Levelcrete, minimize downtime during installation, allowing quick return to operations in industrial settings.[45]
In anchoring solutions, Fosroc provides resin-based chemical anchors, including the Lokfix series like Lokfix P80 and S80, which are polyester resin grouts for securing bolts, tendons, and dowels in concrete, masonry, or natural rock substrates.[46] These systems offer high load-bearing capacities and vibration resistance, ideal for construction applications such as foundation bolts, railway tracks, and ground anchors in mining operations.[46] Key features include corrosion resistance, ultra-rapid strength gain, and compatibility with wet or underwater conditions, ensuring reliable performance without expansion issues.[46]
Fosroc's flooring and anchoring products comply with relevant industry standards, including European norms like BS EN 1504 for protective coatings on concrete structures, as well as FeRFA, EFNARC, ASTM, and British specifications, guaranteeing quality and safety in heavy-duty use.[45] These systems can integrate with grouts for enhanced repair applications in structural contexts.[46]