Put water in its place with our unrivalled range of waterproofing products and systems.

We offer all round solutions, which can be tailored to even the most challenging requirement – above or below the ground, whether you want to keep water in or keep water out. We consider the entire waterproofing process to the very last detail and can provide solutions for both new build and refurbishment projects.

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Watertight Concrete

Sika is the market leader in concrete admixture technology. Combining this with our expertise in waterproofing has led to the development and evolution of the Sika® Watertight Concrete System, now the most widely used system of its type in the UK.

Watertight Concrete Powder

Sika® Watertight Concrete Powder is a combined water resisting and HRWR/Superplasticising admixture, used to enhance the workability of and reduce the water permeability of concrete. The product incorporates Sika® ViscoCrete Superplasticiser Technology and depending on material package will produce watertight concrete at a S3 consistence with a w/c ratio of <0.45 without the addition of a separate HRWR/Superplasticiser. Watertight concrete can be produced which is suitable for BS8102:2009 Type B construction (grades 1-3). Sika® Watertight Concrete Powder meets the requirements of BS EN 934-2 Table 9.

System: Watertight Concrete Systems (Type B)

Sika® WT-200 P

Sika® WT-200 P is a combined water resisting and crystalline waterproofing admixture used to reduce permeability of concrete and has the ability to heal cracks.

System: Watertight Concrete Systems (Type B)

Sika® 1+

Sika® 1+ is a liquid water resisting admixture used to reduce the permeability of concrete. Used in combination with Viscocrete® Superplasticiser Technology, watertight concrete can be produced which is suitable for BS8102:1990 Type B construction (grades 1-4). It meets the requirements of BS EN 934-2.

System: Watertight Concrete Systems (Type B)

SikaProof® – Fully Bonded Membrane System

Sika’s unique pre or post-applied system provides a fully-bonded and crack bridging membrane. SikaProof® consists of an embossed, highly flexible polyolefin membrane, with a unique grid pattern of sealant and a specially designed non-woven fleece.

SikaProof® A05 / A08 / A12 Membrane

SikaProof® A-05 is a fully and permanently bonded, self-adhesive, composite sheet membrane waterproofing system for reinforced concrete of the main structure. It consists of an embossed polyolefin (FPO) membrane laminated with a sealant grid and a non-woven fleece. SikaProof® A-05 is coldapplied and pre-applied, as it is installed without heat or open-flames, and before the steel reinforcement is fixed and the concrete is poured.

System: Sheet Membrane Systems (Type A)

SikaProof® A08 / A12 Membrane Edge

SikaProof® A Edge is a preformed L-shaped SikaProof® A membrane sheet in 1.0 m width folded in 50/50 cm with a self-adhesive strip on both sides for a faster and easier application of perimeter edges, corners and connections.

System: Sheet Membrane Systems (Type A)

SikaProof® P12 Membrane

SikaProof® P-12 is a fully and permanently bonded, self-adhesive, post-applied, composite sheet membrane waterproofing system for reinforced concrete structures. It consists of a flexible polyolefin (FPO) based membrane that is pre-coated with an adhesive sealant layer so that the membrane system is self-adhesive. It is cold- and post-applied, without heat or open-flames, by a simple peel and stick process on hardened concrete structures.

System: Sheet Membrane Systems (Type A)

SikaProof® Tape 150

System: Sheet Membrane Systems (Type A)

SikaProof® Tape 150 A

SikaProof® Tape-150 A is a self-adhesive tape, based on a Polyacrylate-adhesive on a yellow carrier film coated with the SikaProof A fully bonded sealant and fleece system.

System: Sheet Membrane Systems (Type A)

SikaProof® Ex Tape 150

SikaProof® Ex-Tape 150 is a self-adhesive tape, consisting of a butyl rubber adhesive that is covered with a divided release liner.

System: Sheet Membrane Systems (Type A)

SikaProof® Fix Tape 50

SikaProof® FixTape-50 is a double-sided adhesive tape, consists of a butyl rubber adhesive that is covered with a release liner.

System: Sheet Membrane Systems (Type A)

SikaProof® Patch 200B

SikaProof® Patch-200 B is a self-adhesive tape, consisting of a SikaProof® membrane laminated with a Sikaproof® Butyle® adhesive that is covered with a release liner.

System: Sheet Membrane Systems (Type A)

SikaProof® Primer-01

SikaProof® Primer-01 is a solvent-dispersed synthetic rubber and resin based.

System: Sheet Membrane Systems (Type A)

Sika® Drain 850 Geo

Sika® Drain-850 Geo is a heavy duty drainage and protection sheet produced from high density polyethylene (HDPE) with dimples 10 mm high and a filtration layer of geotextile (PP) bonded on the top.

System: Sheet Membrane Systems (Type A)

Sikaplan® – Compartmentalised Membrane System

High quality compartmentalised PVC and TPO membrane systems with integrated damage and leak control, together with an injection sealing back-up that can surpass the requirements for even the most demanding below ground structures.

Sikaplan® WT 1100

Sikaplan® WP 1100-20HL is a homogeneous sheet waterproofing membrane with a 0.6 mm thick signal layer, based on polyvinylchloride (PVC-P).

System: Sheet Membrane Systems (Type A)

Sika Bituseal®

A post-applied self-adhesive waterproofing sheet membrane based on modified bitumen, reinforced with polyester non-woven fabric.

Sika® BituSeal S-115

Sika® BituSeal S-115 is a post applied self-adhesive waterproofing sheet membrane. It is based on SBS (styrene-butadiene-styrene) modified bitumen, reinforced with polyester non woven fabric. It has a silicone-treated release liner on the upper and lower surface.

System: Sheet Membrane Systems (Type A)

Sika® BituSeal S-115 Primer

Sika® BituSeal Primer is a bitumen solution to be used in conjunction with Sika® BituSeal S-115.

System: Sheet Membrane Systems (Type A)

Sodium Bentonite Waterproofing System

Polymer modified bentonite waterproofing system. Mechanically bonded, contaminate resistant, self-healing membrane for basement and below ground structures.

Sika BentoShield® MAX LM

Sika BentoShield® MAX LM is a self healing waterproofing membrane that’s resistant to contaminated soils, forming an automatic mechanical bond to freshly poured concrete it virtually eliminates the possibility of water movement between the membrane & structure. Approximately 6.5 mm thick, consisting of two polypropylene geotextiles, a woven fabric and non-woven fabric, enclosing prehydrated homogeneous layer of granular sodium bentonite at a minimum weight of 5000g/m². The two geotextiles are interlocked by a needle-punching process forcing fibres from the non-woven layer through and beyond the woven layer. This process contains and confines the polymer modified bentonite granules and forms a physical link between the geotextiles. A flexible polyethylene layer is integrally bonded to the non-woven geotextile.

System: Sodium Bentonite System (Type A)

Sika BentoShield® MAX Granules

Sika BentoShield® MAX Granules are polymer modified natural sodium bentonite granules, these granules when wetted form a dense waterproof paste.

System: Sodium Bentonite System (Type A)

Sika BentoShield® Paste

Sika BentoShield® Paste is a single component mastic consisting of polymer modified natural sodium bentonite and further polymer additives. Trowel applied and thixotropic in nature.

System: Sodium Bentonite System (Type A)

Trak-It® C5 Gas Fixing Tool

The Trak-It® C5 gas fastening system was developed for use in light-duty static applications, including attaching drywall track to concrete, block or steel, lath to concrete or block, furring strips to concrete or block, and plywood to concrete or block base materials. The system is designed for speed, efficiency and consistency. Operation of a gas fastening system does not require licensing.

System: Sodium Bentonite System (Type A)

Sika BentoShield® SS50 Bond Tape

Sika BentoShield® SS50 bonding tape is a single-sided adhesive tape, consists of a butyl rubber adhesive that is covered with a release liner.

System: Sodium Bentonite System (Type A)

Sika BentoShield® Termination Strip

Sika BentoShield® Termination Strip is a galvanised steel bonding strip with 5mm holes at 15mm centres in a solid plastic holder.

System: Sodium Bentonite System (Type A)

Cavity Drainage System

Sika® Cavity Drainage System creates a secondary internal wall and floor to control water after it has penetrated the structure. Utilising a high density polypropylene internal drainage membrane, the system directs penetrating water into a drainage system and a collection sump before using a pump to discharge water from the building.

Sika® Standard Drainage Membrane

The Sika® Cavity Drainage System consists of moulded high-density polyethylene and polypropylene membranes and fixing/sealing materials used as a water diversion system in the refurbishment or new construction of domestic and commercial buildings. The Sika® Standard Drainage Membrane is an 8 mm polypropylene studded membrane.

System: Cavity Drainage System (Type C)

Sika® Plaster Drainage Membrane

The Sika® Cavity Drainage System consists of moulded high-density polyethylene and polypropylene membranes and fixing/sealing materials used as a water diversion system in the refurbishment or new construction of domestic and commercial buildings. The Sika® Plaster Drainage Membrane is a 5mm high-density polyethylene cavity drainage studded membrane.

System: Cavity Drainage System (Type C)

Sika® HD20 Membrane

The Sika® Cavity Drain System consists of moulded high-density polyethylene and polypropylene membranes and fixing/sealing materials used as a water diversion system in the refurbishment or new construction of domestic and commercial buildings. The Sika® HD20 Membrane is a high-density polyethylene, high capacity cavity drainage membrane.

System: Cavity Drainage System (Type C)

Sika® CD Anti Lime Coating

The Sika® CD Anti-Lime Coating is a blend of high-grade silicates and wetting agents, held in suspension with water as a carrier. Once applied to the concrete surface, this unique product seals the concrete surface.

System: Cavity Drainage System (Type C)

Structural Waterproofing Render System

Sika’s structural waterproofing render system can be applied to walls and floors and is available as a screed and render system. The system can be used to meet the requirements of all 3 grades of waterproofing, as outlined by BS8102: 2010

Sika® 1 – Pre-Bagged

Sika® 1 Pre-Bagged Structural Waterproofing System mortars are pre-bagged kiln dried blends of specially graded aggregates and cements packaged in 4 grades at the appropriate mix ratios for optimum application performance and durability. When mixed with the diluted Sika® 1 liquid waterproofing admixture they provide the multicoat components for the structural waterproofing systems.

System: Structural Render System (Type A)

Liquid Applied Membrane Systems

Fast to apply, crack-bridging, polyurethane and polyurea based liquid membranes. Sika liquid applied membranes are highly elastic and flexible polymeric systems, usually based on polyurethane or polyurea resins with excellent technical properties for high performance applications.

Sikalastic® 851

Sikalastic®-851 is a two part, elastic, crack-bridging, rapid-curing polyurethane membrane. Sikalastic®-851 is for machine application only.

System: Liquid Applied Membrane Systems (Type A)

Sikalastic® 841 ST

Sikalastic®-841 ST is a two part, elastic, 100% solids, very fast curing pure polyurea liquid applied membrane with very good chemical resistance. Sikalastic®-841 ST shall not be used in closed structures containing biogenic sulphuric acid Sikalastic®-841 ST can only be spray applied with special two part hot spray equipment.

System: Liquid Applied Membrane Systems (Type A)

Sikalastic® 844 XT

Sikalastic®-844 XT is a two part, elastic, very fast curing modified polyurea spray applied membrane where exposure to high acidic and alkaline chemical concentrations are present, therefore also suitable for the use in closed structures containing biogenic sulphuric acid. Sikalastic®-844 XT can only be spray applied with special two part hot spray equipment.

System: Liquid Applied Membrane Systems (Type A)

Sikalastic® 8800

Sikalastic®-8800 is a two part, elastic, 100% solids, very fast curing pure polyurea liquid applied membrane with good chemical resistance. Sikalastic®-8800 shall not be used in closed structures containing biogenic sulphuric acid Sikalastic®-8800 can only be spray applied with special two part hot spray equipment.

System: Liquid Applied Membrane Systems (Type A)

Sikalastic® 827 LT

Sikalastic®-827 LT is a modified hot-melt adhesive used as part of the bridge deck waterproofing system underneath mastic asphalt and asphalt concrete.

System: Liquid Applied Membrane Systems (Type A)

Sikalastic® 822

Sikalastic®-822 is a 2-part elastic, crack bridging, hand applied polyurethane membrane.

System: Liquid Applied Membrane Systems (Type A)

Waterproofing Mortars & Coatings / Damp-Proofing Renders/ Finishes/DPC Injection

Externally applied systems with or without crack-bridging abilities. Sika waterproof mortars and bitumen based coatings are rigid or semi-flexible waterproofing products.

Sika® Damp-proofing Slurry

Sika® Damp-proofing Slurry is a one part polymer modified cement based waterproof coating comprising of special cement based components and admixtures. When mixed with water a slurry or mortar material is produced for direct application to a variety of construction substrates.

System: Mortars and Coatings, Renders Finishes, DPC Injection (Type A)

SikaTop® Seal 107

SikaTop® Seal-107 is a two part polymer modified cementitious waterproof mortar slurry comprising of a liquid polymer and a cement based mix incorporating special admixtures. (DWI approved)

System: Mortars and Coatings, Renders Finishes, DPC Injection (Type A)

SikaTop® Seal 107 Standard

SikaTop® Seal-107 Standard is a two part polymer modified cementitious waterproof mortar slurry comprising of a liquid polymer and a cement based mix incorporating special admixtures.

System: Mortars and Coatings, Renders Finishes, DPC Injection (Type A)

Sikalastic® 1K

Sikalastic®-1K is a one component, flexible, fibre-reinforced mortar, based on cement modified with special alkali-resistant polymers. It also contains fine fillers, selected graded aggregates, plus special waterproofing additives to produce a flexible mortar that is ideal for waterproofing surfaces subject to flexural strain. Sikalastic® -1K is suitable for application by brush or trowel.

System: Mortars and Coatings, Renders Finishes, DPC Injection (Type A)

Sika® Igolflex® 201

Sika® Igolflex®-201 is a two-part, solvent-free and fibre reinforced coating, based on a polymer-modified bitumen emulsion. Part one contains the liquid polymer modified bitumen emulsion, with the fibre reinforcement. Part two contains the reactive component for accelerated curing.

System: Mortars and Coatings, Renders Finishes, DPC Injection (Type A)

Sika® Igolflex® P 01

Sika® Igolflex®-P01 is a one-part solvent-free bitumen emulsion primer for thick layer bituminous coatings and membranes.

System: Mortars and Coatings, Renders Finishes, DPC Injection (Type A)

Movement Joints

Special attention should be given to the use of waterstops at movement joints. Movement joints are necessary because of movement in the structure as a result of settlement, traffic loads, shrinkage or other causes. Sika offers high performance joint sealing systems that can be applied internally or externally.

Sikadur®- Combiflex® SG System

The Sikadur-Combiflex® SG system is a high performance joint and crack sealing system for construction joints, expansion (movement) joints and connection joints or cracks. The system allows variable and high levels of movement in one or more directions, whilst maintaining a high quality watertight seal.

System: Watertight Concrete Systems (Type B)

SikaDur® Combiflex® Adhesive CF Normal

Sikadur®-Combiflex® CF Adhesive Type N is a thixotropic two part adhesives based on epoxy resins and fillers. The Sikadur-Combiflex CF Adhesive Type N is part of the Sikadur®-Combiflex® System and used to glue the Sikadur®-Combiflex® Tape or the Sikadur®-Hypalon Strip to different substrates.

System: Movement Joints

SikaSwell® S 2

One part polyurethane sealant which swells in contact with water.

System: Movement Joints

SikaSwell® A Profiles

Acrylic sealing profiles and rings which swell in contact with water.

System: Movement Joints

Sika® Metalsheet-FBV Set

The Sika® Metalsheet‐FBV joint waterstop is a galvanized metal sheet with a special coating applied on one side to increase its adhesion to fresh concrete. This coating produces a durable watertight bond into the concrete structure during construction.

System: Movement Joints

Sika® Waterbar PVC-P

Sika Waterbar® made from PVC-P can be used as flexible waterstops and are designed for the sealing of movement (expansion) and construction joints in new watertight concrete structures. Sika Waterbar® are available in a range of different types, shapes and sizes to suit different types of structures and joint sealing applications.

System: Movement Joints

X-Plug™ XP004

The X-Plug™ is a mechanical plug specifically designed to seal the void formed in a concrete wall by the removal of a tie bar.

System: Movement Joints

Sika® Dilatec® Tapes

Sika® Dilatec® tapes are flexible, ready to use, waterproofing and sealing tapes, made of bitumen resistant PVC with fabric strips at the side, for use in construction and movement joints and for the connections and ends of sheet waterproofing membranes. They are part of the Sika® Dilatec® System.

System: Movement Joints

Integral Liquid Waterproofers

Liquid waterproofing additives Integral Liquid Waterproofers

Sika® 1

Sika®-1 Waterproofer is an aqueous solution containing complex colloidal silicates. In the presence of water these swell and block the capillaries and pores in the applied sand cement renders, screeds and mortar to provide an effective water barrier against the transmission of liquid water. Sika®-1 Waterproofer can be used alone as an admixture or as a waterproofing system when used in conjunction with the Sika®-1 Pre-Bagged, Spritz, Render, Screed and Finishing Mortars.

System: Integral Liquid Waterproofers

Sika® 2

Sika®-2 Water Plug is used for the immediate sealing of severe water leaks in tunnels, subways, basements, inspection pits, vaults etc. before coating with a proprietary waterproofing system. Used as plug for penetrating water, Sika®-2 is a ready to use rapid setting leak stopping liquid which is mixed with ordinary Portland cement to produce a paste for rapid sealing against high water pressure infiltration.

System: Integral Liquid Waterproofers

Sika® 4

Sika®-4 Rapid Setting is used to aid the quick setting of cement based renders and concretes where low water pressure or slow moving water exists. Sika®-4 Rapid Setting is a ready to use quick setting leak stopping liquid which is mixed with water and ordinary portland cement to produce a paste for leak stopping against low water pressure infiltration.

System: Integral Liquid Waterproofers

Sika® 4a

Sika®-4a Water Stop is a ready to use quick setting leak stopping liquid which is mixed with water and ordinary Portland cement to produce a paste for leak stopping against high water pressure infiltration.

System: Integral Liquid Waterproofers

Injection Hose Systems

Range of specially designed solid core Injection Hose Systems which can be installed in concrete construction joints to waterproof them and also to seal any cracks or voids in the joint areas.

SikaFuko® ECO 1 Combipack

Injectable hose to seal construction joints in watertight structures against water and salt water ingress.

System: Injection Hose Systems

SikaFuko® VT 1 Combipack

Injectable hose with unique integral ‘valves’ for sealing and possibly resealing construction joints in watertight structures against water and salt water ingress.

System: Injection Hose Systems

SikaFuko® VT 2 Combipack

System: Injection Hose Systems

Waterproofing Resins / Injection Grouts

Water can leak into and out of structures. Reasons for this can be cracks, failed joints and even through permeable substrates. Sika produce a range of resin injection systems designed to stop water ingress through leaks.

Sika® Injection 101 RC

Sika® Injection-101 RC is a low viscous, fast foaming and solvent-free water-reactive polyurethane injection foam resin, which cures to a dense flexible foam with a fine cellular structure.

System: Resins and Injection Grouts

Sika® Injection-201 CE

Sika® Injection-201-CE is a very low viscous, elastic and solvent-free polyurethane injection resin. In contact with water, a uniform, closed and therefore watertight pore structure forms, which is elastic and flexible.

System: Resins and Injection Grouts

Sika® Injection-304

Sika® Injection-304 is a very low viscous, elastic and very quick-gelling polyacrylic injection gel. The material reacts to form a waterproof, elastic but solid gel with good adhesion to both dry and wet substrates.

System: Resins and Injection Grouts

Sika® InjectoCem-190

Sika® InjectoCem-190 is a two part injection grout based on micro cement with added corrosion inhibitors.

System: Resins and Injection Grouts

SikaDur® 52 Injection Type N

Sikadur®-52 Injection Type N is a two part, solvent-free, low viscosity injectionliquid, based on high strength epoxy resin. Type N (= Normal Potlife) is used for substrate temperatures between +5°C and +30°C (UK).

System: Resins and Injection Grouts