Put water in its place with our unrivaled 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.
Click on a product below to find out more:
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.
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.
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 BS8102:2022Type B construction (grades 1-4). It meets the requirements of BS EN 934-2.
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® A08 Membrane
SikaProof® A-08 is an embossed polyolefin FPO sheet membrane for pre-applied fully bonded below ground waterproofing of reinforced concrete structures. Membrane thickness 0,8 mm. SikaProof® A-08 is cold applied
without heat or open flames to prepared substrates or onto formwork before fixing reinforcement and concrete placement. The membrane has self-adhesive longitudinal strips for bonding overlap joints and is laminated with a unique sealant and a non-woven fleece backing layer which creates a bond with the cast concrete.
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.
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.
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.
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.
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.
SikaProof® Primer-01 is a solvent-dispersed synthetic rubber and resin based.
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).
Sikaplan® WT 2200-32 HL2
Sikaplan® WT 2200-32 HL2 is a flexible, homogeneous sheet waterproofing membrane with a signal layer ≤ 0.2mm, based on flexible polyolefins (FPO).
Sikaplan® WT 2200-21 HL2
Sikaplan® WT 2200-21 HL2 is a flexible, homogeneous sheet waterproofing membrane with a signal layer ≤ 0.2mm, based on flexible polyolefins (FPO).
Sikaplan® WT 4220-15 C
Sikaplan® WT 4220-15 C is a polyolefin flexible homogeneous smooth sheet membrane with a glass fibre reinforcing inlay. Thickness 1,5 mm. For Temperatures up to +40 °C. Approved for potable water, the product provides a high strength, microbiological, soft water resistant, durable and heat weldable membrane.
Sikaplan® WP 1100-21 HL
Sikaplan® WP 1100-21 HL is a flexible, homogeneous sheet waterproofing membrane with a signal layer, based on premium-quality polyvinylchloride (PVC-P).
Sikaplan® WP 1100-21 HL2
Sikaplan® WP 1100-21 HL2 is a flexible, homogeneous sheet waterproofing membrane with a ≤ 0.2mm thick signal layer, based on premium-quality polyvinylchloride (PVC-P).
Sikaplan® WP Protection Sheet-20 HE
Sikaplan® WP Protection Sheet-20 HE is a homogeneous protective membrane with an embossed surface, based on polyvinylchloride (PVC-p).
Sikaplan® WP Protection Sheet-21 H
Sikaplan® WP Protection Sheet-21 H is a homogeneous protective sheet membrane, based on polyvinylchloride (PVC-p).
Sikaplan® WP Protection Sheet-30 HE
Sikaplan® WP Protection Sheet-30 HE is a homogeneous protective membrane with an embossed surface on top, based on polyvinylchloride (PVC-p).
Sikaplan® WP Protection Sheet-31 H
Sikaplan® WP Protection Sheet-31 H is a homogeneous protective membrane, based on polyvinylchloride (PVC-p).
Sikaplan® WP Control Socket 6
Sikaplan® WP Control Socket 6 is a flange element with round base plate and hose connection socket on base of PVC-p.
Sikaplan® WP Disc
Sikaplan® WP Disc is a ready to use fixing disc on base of polyvinylchloride (PVC-p).
Sikaplan® WP Trumpet Flange
Sikaplan® WP Trumpet Flange is a preformed flange element with round base plate and pipe on base of PVC-p.
Sikaplan® VOC and Gas Barriers
The Sikaplan® VOC Gas Barrier range of products provide waterproofing, ground gas and VOC protection all in one system. Comprising a pre-applied bonded membrane, post-applied adhered membrane and loose-laid membrane for both ground-level and below-ground applications.
Sikaplan®-1650 DPM Gas Barrier
Sikaplan®-1650 DPM Gas Barrier can be used in conjunction with SikaProof®-A and -P to continue the gas protection at ground level.
Sikaplan® 1651 / 1652 / 1653 Gas Barriers
The Sikaplan® VOC gas barrier range of products provide waterproofing, ground gas and VOC protection all in one system.
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.
Sika® BituSeal S-115 Primer
Sika® BituSeal Primer is a bitumen solution to be used in conjunction with Sika® BituSeal S-115.
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.
Sika BentoShield® MAX Granules
Sika BentoShield® MAX Granules are polymer modified natural sodium bentonite granules, these granules when wetted form a dense waterproof paste.
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.
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.
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.
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.
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.
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.
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.
Sika® Pump Pro XL
The Sika® Pump Pro XL is a fully automatic sump and pump set suitable for removal of water from a double storey basement cavity drain system.
Sika® Pump Pro Plus
The Sika® Pump Pro Plus is a fully automatic sump and pump set suitable for removal of water from a single storey basement cavity drain system.
Sika® Pump Pro Battery Backup
The Sika® Pump Pro Battery Backup is a fully automatic sump and pump set suitable for removal of water from a single storey basement cavity drain system.
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 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.
Sika® -1 Pre-Bag LC Render
Sika®-1 Pre-bag LC Render Mortar is a pre-bagged, kiln dried blend of aggregates, cements, cement replacement materials with waterproofing admixtures. Packed as a single product system and formulated to achieve a high performance, durable and sustainable 3-coat render system.
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 is a two part, elastic, crack-bridging, rapid-curing polyurethane membrane. Sikalastic®-851 is for machine application only.
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.
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.
Sikalastic®-810 is a two part adhesion promoting primer based on polyurethane resin for several Sikalastic®-systems.
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.
Sikalastic® 827 HT
Sikalastic®-827 HT is a modified, expanding, hot-melt adhesive used as part of the bridge deck waterproofing system underneath mastic asphalt, stone mastic asphlat and asphalt concrete.
Sikalastic® -800 HA
Sikalastic®-800 HA is a two component, solvent free, highly elastic, low odour polyurea based waterproofing membrane.Due to its self-levelling properties Sikalastic®-800 HA is ideal for applications on protected podium decks and will provide a jointless surface, fully bonded, with crack bridging abilities and resistance to ponding water.
Sikalastic®-8902 is a 2-part, polyurethane, transparent tack coat for Sikalastic®-827 HT hot melt pellets
Sikalastic®-8440 is a 2-part, pure polyurea, hot spray applied, elastic, very fast curing, waterproofing membrane. Provides a seamless, abrasion and chemical resistant finish for liquid retaining structures containing
high levels of acid.
Sikalastic®-836 DW is a 2-part pure polyurea, hot spray applied, elastic, very fast curing, waterproofing membrane. Provides a seamless, abrasion resistant finish with crack bridging abilities which is suitable for use in
drinking water installations. Thickness ≥ 2 mm.
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.
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.
Sikalastic® 1K GB
Sikalastic®-1K GB is a one-component, crack-bridging, fibre-reinforced mortar, based on cement modified with special alkali-resistant polymers. Sikalastic®-1K GB is suitable for application by brush or trowel.
Sika® Igolflex® P 01
Sika® Igolflex®-P01 is a one-part solvent-free bitumen emulsion primer for thick layer bituminous coatings and membranes.
Sika MonoTop-130 Seal
Sika MonoTop®-130 Seal is a one part flowable shrinkage compensated general purpose cementitious grout for waterproofing applications. Ideal for sealing around pipe penetrations and core drilled holes on structural concrete.
Construction & 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® System
The Sikadur-Combiflex® 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.
Sikadur Combiflex® SG-10 M
Sikadur Combiflex® SG-10 M is a flexible waterproofing tape based on modified flexible Polyolefin (FPO) with advanced adhesion properties. It has a red middle strip on one side for easier application over expansion
joints. Thickness 1,0 mm. The product is part of the Sikadur Combiflex® SG System
Sikadur-Combiflex® SG-20 M
Sikadur-Combiflex® SG-20 M is a flexible waterproofing tape based on modified flexible Polyolefin (FPO) with advanced adhesion properties. It has a red middle strip on one side for easier application over expansion
joints. Thickness 2,0 mm. The product is part of the Sikadur Combiflex® SG System.
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.
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.
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.
Joint sealing systems like SikaSwell® profiles and sealants are waterstops which can swell and are used in watertight concrete structures for systematic sealing of construction joints.
Acrylic sealing profiles and rings which swell in contact with water.
SikaSwell® A Profiles
Acrylic sealing profiles and rings which swell in contact with water.
SikaSwell® S 2
One part polyurethane sealant which swells in contact with water.
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.
Integral Liquid Waterproofers
Liquid waterproofing additives Integral Liquid Waterproofers
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.
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.
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.
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.
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® VT 1
Injectable hose with unique integral ‘valves’ for sealing and possibly resealing construction joints in watertight structures against water and salt water ingress.
SikaFuko® VT 2
Injectable hose with unique integral ‘valves’ for sealing and possibly resealing construction joints in watertight structures against water and salt water ingress.
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.
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.
SikaDur® 52 Injection Type N
Sikadur®-52 Injection Type N is a two part, solvent-free, low viscosity injection liquid, based on high strength epoxy resin. Type N (= Normal Potlife) is used for substrate temperatures between +5°C and +30°C (UK).
SikaDur® 52 Injection Normal
Sikadur®-52 Injection Normal is a two part, solvent-free, low viscosity injection liquid, based on high strength epoxy resin. Type N (= Normal Potlife) is used for substrate temperatures between +5°C and +30°C (UK).
Sika® Injection-306 is a very low viscous, elastic polyacrylic injection resin with a versatile and adjustable reaction time.
Sika® Injection 307
Sika® Injection-307 is a very low viscous, elastic polyacrylic injection resin used for permanent watertight sealing with a versatile and adjustable reaction time.
Sika® Injection 107
Sika® Injection 107 is a 1-component, polyurethane based, slightly flexible foaming injection resin for the permanent watertight sealing of cracks
Sika® Injection-190 GB
Sika® Injection-190 GB is a 2-part, mineral injection grout based on micro-cement binders with added corrosion inhibitors
Sika® Injection AC-20
Sika® Injection AC-20 is a colourless liquid which accelerates the reaction and curing times of the PU injection resins Sika® Injection-201 CE and Sika® Injection-203, even at low temperatures.
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.
Sika® Injection-304 PS
Sika® Injection-304 PS is a low viscosity, elastic polyacrylic polymeric strengthened injection resin. The material reacts to form a waterproof, elastic and solid gel with good adhesion to both dry and wet substrates.
Sika® Injection-216 is a 2-part, polyurethane structural injection resin. It is specially formulated for crack injection work by pressure injection.