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Waterproofing Grouts, Repairs and Mortars

Specialist Waterproofing Grouts, Repairs and Mortars are vital for protecting surfaces from water damage and ensuring structural integrity. These high-performance products are essential in construction, civil engineering, and refurbishment projects that require waterproofing for both internal and external applications. From filling cracks and joints to creating watertight barriers on walls and floors, they offer reliable protection in demanding environments. Solutions range from waterproofing mortars and screeds to specialist repair products.

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Sikalastic 1K

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. Features and...

Price £155.52 (incl. VAT)
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Sika 1 Pre-Bagged Render Mortar | Ready To Use Waterproofing Mortar

Sika 1 Pre-Bagged Render Mortar

Sika 1 Pre-Bagged Render Mortar is part of the Sika 1 Pre-Bagged Structural Waterproofing System and is the second layer of the render system. These special mortars are pre-bagged kiln dried blends of specially graded aggregates and cements, with waterproofing admixtures, packaged in 4 grades at the appropriate mix ratios for optimum...

Price £52.97 (incl. VAT)
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Sika 1 Pre-Bagged Finishing Mortar | Ready To Use Waterproofing Mortar

Sika 1 Pre-Bagged Finishing Mortar

Sika 1 Pre-Bagged Finishing Mortar is part of the Sika 1 Pre-Bagged Structural Waterproofing System and is the third layer of the render system. These special mortars are pre-bagged kiln dried blends of specially graded aggregates and cements, with waterproofing admixtures, packaged in 4 grades at the appropriate mix ratios for optimum...

Price £52.97 (incl. VAT)
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Sika 1 Pre-Bagged Spritz Mortar | Ready To Use Waterproofing Mortar

Sika 1 Pre-Bagged Spritz & Bonding Coat Mortar

Sika 1 Pre-Bagged Spritz & Bonding Coat Mortar is part of the Sika 1 Pre-Bagged Structural Waterproofing System and is the first layer of the render or screed system. These special mortars are pre-bagged kiln dried blends of specially graded aggregates and cements, with waterproofing admixtures, packaged in 4 grades at the appropriate mix...

Price £57.17 (incl. VAT)
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Sika 2 Water Plug

Sika 2 Water Plug

Sika 2 Water Plug is a rapid setting, leak stopping solution that is ready to use even on high waterpressure areas. It can be used to seal against high water pressure infiltrations and allows Sika 1 Waterproofing Renders, SikaCem 133 Gunite or Shotcrete to be applied on structures exposed to running surface water. Features and Benefits...

Price £56.39 (incl. VAT)
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Sika 1 Pre-Bagged Screed Mortar | Ready To Use Waterproofing Screed

Sika 1 Pre-Bagged Screed Mortar

Sika 1 Pre-Bagged Screed Mortar is part of the Sika 1 Pre-Bagged Structural Waterproofing System and is the third layer of the floor screed system. These special mortars are pre-bagged kiln dried blends of specially graded aggregates and cements, with waterproofing admixtures, packaged in 4 grades at the appropriate mix ratios for optimum...

Price £52.97 (incl. VAT)
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Fosroc Renderoc Plug 1 | Rapid Setting Water-Stopping Mortar

Fosroc Renderoc Plug 1

Fosroc Renderoc Plug 1 is a rapid setting cement-based, water-stopping mortar which is easy to apply to horizontal, vertical or overhead surfaces at a wide range of thicknesses, conforming to the requirements of BS EN 1504 Class R1.  For the rapid patching and plugging of concrete segments, concrete and brick tunnel linings, sewage systems,...

Price £70.91 (incl. VAT)
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Sika 4a Waterstop

Sika 4A Water Stop

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. Features and Benefits  Ready to use Rapid setting time Just add water and ordinary portland cement Well proven Does not contain...

Price £64.21 (incl. VAT)
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Sika MonoTop-130 Seal | General purpose grout for waterproofing applications

Sika MonoTop 130 Seal

Sika MonoTop-130 Seal is a one part flowable shrinkage compensated general purpose cementitious grout for waterproofing applications. Easy to use (ready to mix powder). Prebatched for quality. Just add water. High compressive strength gain. Easy to mix and apply. For exterior and interior use. Can be pumped or poured. Good...

Price £90.62 (incl. VAT)
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Mapei Mapelastic

Mapei Mapelastic

Mapei Mapelastic is a two-component cementitious mortar, flexible down to -20°C, for waterproofing balconies, terraces, bathrooms and swimming pools. Protects the surface of concrete from CO₂ penetration (carbonation) for more than 50 years CE-certified product in compliance with EN 1504-2 and EN 14891 Product certified EC1 R Plus by the...

Price £181.42 (incl. VAT)
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Fosroc Renderoc Plug 20

Fosroc Renderoc Plug 20

Fosroc Renderoc Plug 20 is a rapid setting cement-based, water-stopping mortar which is easy to apply to horizontal, vertical or overhead surfaces at a wide range of thicknesses, conforming to the requirements of BS EN 1504 Class R1.  For the rapid patching and plugging of concrete segments, concrete and brick tunnel linings, sewage systems,...

Price £114.02 (incl. VAT)
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Sika BentoShield MAX Granules

Sika BentoShield MAX Granules

Sika BentoShield MAX Granules are polymer modified natural sodium bentonite granules, these granules when wetted form a dense waterproof paste. Used to seal Sika BentoShield MAX LM membrane around slab penetrations and pile heads. Create secondary fillets at wall / slab junctions, correct minor cracks in the substrate prior to the membrane...

Price £121.80 (incl. VAT)
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Sika BentoShield 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. Used to seal Sika BentoShield MAX LM membrane around vertical & horizontal penetrations and protrusions. Seal ground level termination details, Create...

Price £337.78 (incl. VAT)
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Sika Parex Aquatic Mortar Accelerated | For Coastal & Marine Areas

Sika Parex Aquatic Mortar Accelerated

Parex Aquatic Mortar Accelerated is a blend of special Portland cements high quality graded sands, and unique combinations of polymers and admixtures including microsilica. The product contains no iron, high alumina cement, chloride or deleterious substances. The mortar powder, when mixed with water, produces a very cohesive material and is...

Price £62.35 (incl. VAT)
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Mapei Mapeproof Swell

Mapei Mapeproof Swell

Mapeproof Swell is a single component hydro-expansive paste, supplied in cartridges, specially developed to form flexible, waterproof seals in cracked reinforced concrete or in prefabricated elements with infiltration of water. May be applied on damp or uneven surfaces May be used at any temperature and with any kind of water which...

Price £226.40 (incl. VAT)
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Mapei Mapelastic Turbo

Mapei Mapelastic Turbo

Mapei Mapelastic Turbo is a two-component, rapid-drying elastic cementitious mortar for waterproofing terraces and balconies, including at low temperatures and on substrates not completely dry. Used for: Waterproofing balconies, terraces, flat roofs, swimming pools before bonding ceramic, mosaic or natural stone floor and wall coverings...

Price £149.64 (incl. VAT)
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Resimac Resichem 574 Fastfill Plug | Seal Pressurised Water Leaks

Resimac Resichem 574 Fastfill Plug

Resichem 574 Fastfill Plug is a single component fast curing engineering grade, polymer modified, reactive cementitious putty for arresting water seepage and infiltration under pressure through cracks, joints and voids in concrete and masonry. For professional use only Please note: this product is subject to a 28 Working Day lead time More...

Price £90.60 (incl. VAT)
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Fosroc Polyurea WCS | Fast Setting Waterproof Coating and Seam Seal

Fosroc Polyurea WCS

Fosroc Polyurea WCS  is a cartridge-packed, 100% solids, flexible, two-component, rapid curing Polyurea system. Designed for use as a fast setting elastomeric waterproof coating and seam seal. Standard Grade is low pressure spray or pour-applied, designed as a waterproofing and protective coating for small areas including repair work. It...

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Fosroc Proofex WG | High Performance Waterproofing Epoxy Resin

Fosroc Proofex WG

Fosroc Proofex WG is a three-component system consisting of base resin, liquid hardener and specially graded inert fillers, used in conjunction with the Proofex range of membranes for detailing of pile caps, box outs and other similar applications to ensure complete integrity of the waterproofing and ground gas protection system. Suitable...

Price £625.49 (incl. VAT)
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Mapei Mapeproof Seal | For Use With Mapeproof

Mapei Mapeproof Seal

Mapeproof Seal is used to locally strengthen Mapeproof bentonite waterproofing sheet applied on structures below ground level. Natural sodium bentonite with a high content of montmorillonite, high swelling capacity, high water absorption capacity Forms a high-density gel with low permeability to fluids, which is used as a complementary...

Price £32.15 (incl. VAT)
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Mapei Mapeproof Mastic

Mapei Mapeproof Mastic

Mapeproof Mastic is a bentonite paste specifically formulated for sealing, grouting and repairing Mapeproof bentonite sheets. Also suitable for: Sealing through elements (reinforcement rods in pile heads, piping, drainage wells) Grouting connector rods (connection and reinforcement rods) For professional use only. More Information...

Price £210.79 (incl. VAT)
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Mapei Planiseal 88 | Formerly Idrosilex Pronto | Contact Safe Mortar

Mapei Planiseal 88

Mapei Planiseal 88 - formerly Idrosilex Pronto - is an osmotic cementitious mortar suitable for contact with drinking water, for waterproofing masonry and concrete structures. Used for: Repairing underground masonries subject to water and moisture seepage in situations with negative pressure up to 1 atmosphere Waterproofing basins,...

Price £79.93 (incl. VAT)
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Mapei Mapelastic Foundation

Mapei Mapelastic Foundation

Mapei Mapelastic Foundation is a two-component, flexible cementitious mortar for waterproofing concrete surfaces subject to both positive and negative water pressure. Recommended for foundation walls, car-parks and underground environments, basins, channels and swimming pools Fulfills all the main criteria for the EN 1504-9 Standards...

Price £194.17 (incl. VAT)
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Flexcrete Marine Mortar S | Waterproof Structural Concrete Repair

Flexcrete Marine Mortar S

2-pack waterproof mortar for structural repair of concrete. For use in areas subject to early immersion and the repair of voids in marine environments. Portland cement based, high strength, fibre reinforced, rapid setting shrinkage compensated. Class R4 mortar, suitable for repair methods 3.1, 3.2, 7.1, 7.2 as defined by EN 1504-3.

Price £74.10 (incl. VAT)
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Flexcrete Cemprotec Elastic | Elastomeric Cementitious Flexible Coating

Flexcrete Cemprotec Elastic

Elastomeric cementitious flexible coating. Bridges minor cracks and protects conacrete or other mineral substrates from water penetration and carbon dioxide diffusion. Can also be used as a crack isolation membrane on concrete floors or screeds. Suitable for surface protection systems principles 1.3, 2.2,,8.2 as defined in BS EN 1504-2....

Price £215.15 (incl. VAT)
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Visqueen Pile Cap Sealer | Continuous Waterproof Seal

Visqueen Pile Cap Sealer

Used to make the concrete surface waterproof for waterproofing Grades 1, 2, and 3 in accordance to BS8102:2022. It can be used on concrete piles, ground beams or concrete junctions as a link between membranes, or it can be used as a standalone waterproof system. It is also used where traditional membranes are not suitable. Can be applied...

Price £98.44 (incl. VAT)
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Interior / Exterior Use

Interior / Exterior Use

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Need Help?

Waterproofing Grouts, Repairs and Mortars play a key role in creating water-resistant structures, preventing water ingress, and enhancing durability in a variety of projects. Commonly used in construction, civil engineering, and repair works, these specialist products provide essential protection for areas exposed to moisture, such as foundations, walls, and floors.

 

Ultimate Protection with External Waterproofing Mortar

Designed for external use, this mortar provides an exceptional barrier against rainwater and groundwater, ensuring long-lasting protection for walls, foundations, and other structures exposed to the elements. It forms a tough, waterproof layer that is resistant to weathering and wear.

 

Sealing Solutions with Waterproofing Grout

Waterproofing grout is engineered to fill and seal joints, cracks, and voids in concrete, masonry, and stone. It effectively blocks water ingress and is particularly suited for areas prone to leaks, offering a robust, long-term solution.

 

Versatile Applications of Waterproofing Mortar

Waterproofing mortar is a multi-functional product used to repair and seal surfaces, providing a durable and waterproof finish. It bonds securely to a wide range of substrates, including brick, concrete, and stone, ensuring a watertight surface in both new and existing structures.

 

Lasting Defence with Waterproofing Render

This render is applied to exterior surfaces, offering a waterproof and protective coating. It is ideal for areas that need both aesthetic enhancement and moisture resistance, preventing long-term water damage.

 

Effective Repairs with Waterproofing Products

Waterproofing repair products are tailored to seal cracks and damaged surfaces, providing a reliable waterproof solution that extends the lifespan of structures and prevents further water infiltration.

 

Durable Finishes with Waterproofing Screed

Waterproof screeds are applied to create smooth, level, and water-resistant surfaces on floors. These screeds are ideal for areas exposed to moisture, such as wet rooms, balconies, and basements.