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Internal Tanking, Damp Proofing and Below Ground Structures

Specialist internal tanking, damp proofing, and below-ground structure waterproofing are essential for protecting buildings against water ingress and damp-related damage. These solutions offer high-performance protection for basements, cellars, and other below-ground areas prone to moisture issues. Waterproofing products designed for interior and external surfaces ensure lasting resilience against rising damp and external water pressure, preventing structural decay. Suitable for both residential and commercial properties, these systems are critical for safeguarding structural integrity. For product compatibility, consult the technical support team.

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Sika Damp-proofing Slurry

Sika Damp-proofing Slurry

Sika Damp-proofing Slurry is a 1-component damp proofing and waterproofing mortar for the damp-proofing of underground buildings or waterproof lining of water sources. Features and Benefits Easy to use and apply BBA approved Just add water Brush, trowel or spray applied Fast mixing Good adhesion Excellent workability Protects...

Price £24.86 (incl. VAT)
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Watco Liquid Waterproofer

Watco Liquid Waterproofer

Watco Liquid Waterproofer is a thoroughly effective solution for damp and wet areas. The thick, roller applied coating can be used in basements, underground garages, workshops or any areas where rising damp or water ingress is a problem. Resistant to frost and salt attack Hardwearing – high abrasion resistance Creates a tough textured...

Price £207.60 (incl. VAT)
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Watco Plant Room Coating | Flexible Waterproof Protection

Watco Plant Room Coating

A tough, flexible, waterproof coating for the protection of plant room floors. It provides seamless, flexible protection, filling and bridging joints and cracks in concrete, brickwork, stone, masonry and plaster. One coat fills cracks, seals and waterproofs Contains leaks and spills Flexible formulation resists cracking and peeling Takes...

Price £207.60 (incl. VAT)
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Fosroc Nitocote CM210 | Waterproofing Coating for Concrete and Masonry

Fosroc Nitocote CM210

Fosroc Nitocote CM210 is a cementitious, polymer modified waterproofing coating for concrete, brick and blockwork substrates. Designed to be easily mixed on-site using a slow speed drill and paddle and then applied to the substrate using a brush, roller, trowel or by spray application Suitable for application to below ground retaining wall...

Price £192.62 (incl. VAT)
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Cromar AlphaChem Wet Room Tanking Kit | Complete Moisture Protection

Cromar AlphaChem Wet Room Tanking Kit

Cromar AlphaChem Wetroom Tanking Kit is a formulated specifically to provide waterproof protection to wetrooms, domestic bathrooms, kitchens and showers on walls and floors, prior to tiling. Each bucket contains a full bodied waterproof coating and membrane tape (10m x 100mm) Flexible waterproof and crack bridging system Easy to use, brush...

Price £36.44 (incl. VAT)
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Ronacrete Ronafix Pre-Packed Tanking Render

Ronacrete Ronafix Pre-Packed Tanking Render

Pre-packed mortar for hand and spray applied tanking renders. Conforms to BS EN 988-1 Suitable for use in basements, swimming pools, vaults, and other areas where tanking is required Application from 6mm High compressive, flexural and tensile strength Pre-packed for increased confidence Trafficable after 24 hours Ronacrete Ronafix...

Price £52.08 (incl. VAT)
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Watco Damp Proof Course Cartridge & Nozzle | Stop Rising Damp in Walls

Watco Damp Proof Course Cartridge and Nozzle

Damp proof injection stops rising damp in walls. The advanced formula means that fewer holes need to be drilled in the wall when compared with conventional systems. High penetration formula No high pressure tools required Use on single skin or cavity walls Easy to handle, low hazard cream Coverage rates and specifications further below...

Price £43.08 (incl. VAT)
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Fosroc Proofex LM | Bituminous Liquid Waterproofing Membrane

Fosroc Proofex LM

Fosroc Proofex LM is a two component bituminous rubber emulsion with special hydraulically hardening fillers for waterproofing of underground structures and intricate details e.g. pipe entries, covings etc. Tested in accordance with DIN 18195, parts 4 to 6. General test certificate No. P-22 1356 8 96-1, MPA Dortmund. Ideal for use in...

Price £272.86 (incl. VAT)
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Fosroc Nitocote EP405 | Epoxy Resin Waterproofing Concrete Coating

Fosroc Nitocote EP405

Fosroc Nitocote EP405 is a two-part, ground gas resistant, solvent free, epoxy resin coating for waterproofing and protecting concrete structures. It is supplied in pre-measured quantities ready for site mixing and application. As a gas resistant waterproof coating it provides a Type A waterproofing barrier as defined in BS8102:2009 and a...

Price £255.12 (incl. VAT)
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Tremco ES500 Sheet Membrane | Moisture Resistant Flooring Underlay

Tremco ES500 Sheet Membrane

Tremco ES500 Sheet Membrane is a specially coated fibreglass underlay and acts as a continuous barrier substrate. It is moisture resistant to damp with resin peduncles on the underside.  Can be laid over a variety of surfaces, such as ceramic floor coverings, metal, access floors, subfloors contaminated with oil or paint, or damp subfloors...

Price £590.04 (incl. VAT)
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Fosroc Brushbond FLXIII | Waterproofing Coating For Concrete Surfaces

Fosroc Brushbond FLXIII

Fosroc Brushbond FLXIII is a two component, cementitious, polymer modified elastomeric waterproofing coating for concrete surfaces. Suitable for use on buried structures such as bridge abutments, culverts and retaining walls. Also for use on reinforced concrete roof decks, in conjunction with protective finishes. Brushbond FLXIII complies...

Price £229.46 (incl. VAT)
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Sikaplan 1653

Sikaplan 1651/1652/1653 VOC Gas Barriers

Sikaplan 1651/1652/1653 Gas Barriers provide waterproofing, ground gas and VOC protection all in one system. Sikaplan 1651 - for ground-level structures. Sikaplan 1652 - for underground structures. Sikaplan 1653 - for  underground structures as a post-applied bonded membrane. Exceptionally high resistance to ground gas and VOCs....

Price £1166.00 (incl. VAT)
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Sikaplan 1650 DPM Gas Barrier | Low density polyethylene membrane for damp-proofing

Sikaplan 1650 DPM Gas Barrier and Detailing Strip

Sikaplan 1650 DPM Gas Barrier is a multi-layer, low density polyethylene membrane designed and manufactured to perform as a methane, carbon dioxide, radon ground gas, air and moisture protection system. Welded joints for improved sealing. In-built grid to give greater strength. Fully compatible with below ground waterproofing systems....

Price £1027.66 (incl. VAT)
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Resimac Resichem 572 Concrete Seal CWC | Cement Screed

Resimac Resichem 572 Concrete Seal CWC

Resichem 572 Concrete Seal CWC is a single component, engineering grade, polymer modified, reactive cementitious coating with high adhesive properties. It is used in permanent immersion or negative pressure waterproofing. It incorporates the most advanced micro-silica, polymer and fibre technology, curing to give a dense matrix which is...

Price £126.84 (incl. VAT)
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Resimac Resichem 573 Fastfill Screed | Sealing & Waterproofing

Resimac Resichem 573 Fastfill Screed

Resichem 573 Fastfill Screed is a single component fast curing engineering grade, polymer modified, reactive cementitious coating with high adhesive properties. It is used in permanent immersion or negative pressure waterproofing. It incorporates the most advanced micro-silica, polymer and fibre technology, curing to give a dense matrix which...

Price £126.84 (incl. VAT)
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Mapei Plastimul | Bitumen Waterproofing Emulsion for Vertical Surfaces

Mapei Plastimul

Plastimul’s thixotropic consistency makes it easy to use for waterproofing even vertical and sloping surfaces. When completely dry Plastimul forms a waterproof plastic coating that is resistant to re-emulsifying after prolonged immersion in water, even when slightly acid or alkaline, and resistant to aggressive agents present in the soil....

Price £59.77 (incl. VAT)
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Mapei Mapelastic Aquadefense

Mapei Mapelastic Aquadefense

Mapei Mapelastic Aquadefense is a ready-to-use, ultraquick drying, flexible liquid membrane for internal and external waterproofing applications. Excellent grip with all types of adhesive for laying ceramic, stone material and mosaic of all kinds Flexible nature helps it withstand normal movements caused by expansion and shrinkage of the...

Price £75.53 (incl. VAT)
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Mapei Mapegum WPS

Mapei Mapegum WPS

Mapei Mapegum WPS is a quick-drying flexible liquid membrane for waterproofing internal surfaces. Used for: Waterproofing walls and floors in bathrooms and shower cubicles before laying ceramic tiles, natural stone and mosaic Waterproofing kitchen walls and floors, and work tops before laying ceramic tiles and natural stone For...

Price £31.90 (incl. VAT)
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Mapei Mapegel UTT System

Mapei Mapegel UTT System

Mapei Mapegel UTT System is a flexible, three-component hydrophilic gel with excellent adhesive properties for waterproofing by injection in underground structures. Specifically formulated to absorb shrinkage and expansion of cracks and voids generated by temperature variations. Used for: Natural tunnels (traditional and mechanized...

Price £386.99 (incl. VAT)
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Mapei Shower Waterproofing Kit

Mapei Shower Waterproofing Kit

Mapei Shower Waterproofing Kit is suitable for waterproofing indoor floor and wall surfaces that are not subject to rising damp or in permanent water immersion. Flexible, anti-fracture membrane. Apply before the installation of ceramic tiles or stone material. Shower Waterproofing Kit may be used on the following: Moisture resistant...

Price £81.25 (incl. VAT)
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Visqueen Axiom UniSeal Tanking Membrane

Visqueen Axiom UniSeal

Visqueen Axiom UniSeal is specially formulated for waterproofing below ground structures, suitable for complex shapes, irregular profiles and angle fillets. Used to seal pipe penetrations and steel stanchions and around steel reinforcement, also on various surfaces including steel, timber, plywood, bitumen membranes, concrete and masonry....

Price £461.76 (incl. VAT)
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Visqueen Axiom Guard | Liquid Damp Proof And Waterproof Tanking Membrane

Visqueen Axiom Guard

Suitable for damp proofing applications including concrete floors and masonry wall constructions. The product is also suitable for waterproofing below ground concrete substructures including retaining walls, cast concrete, precast concrete and steelwork. The product is ideal for complex detailing and difficult to reach areas. Agrement...

Price £592.01 (incl. VAT)
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Visqueen Axiom Guard PRO Type A Barrier Membrane

Visqueen Axiom Guard Pro

Visqueen Axiom Guard Pro is suitable for waterproofing below ground substructures including podium decks, retaining walls and lift pit walls. Can be applied to a variety of substrates including cast concrete, precast concrete, flush pointed blockwork, flush pointed brickwork, and steelwork, in both vertical and horizontal applications. The...

Price £252.00 (incl. VAT)
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Visqueen Axiom Guard Pro Matting | Fibreglass Mesh

Visqueen Axiom Guard Pro Matting

Fibreglass mesh specifically designed as a structural reinforcement for Visqueen Axiom Guard Pro liquid applied membrane. Helps to ensure correct Visqueen Axiom Guard PRO thickness - provides a visual indication when sufficient coating has been applied Reduces overall application time - allows wet-on-wet application eliminating any waiting...

Price £100.80 (incl. VAT)
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Visqueen Axiom Guard PRO Topcoat | BBA Certified | UV Resistant

Visqueen Axiom Guard PRO Topcoat

Visqueen Axiom Guard PRO Topcoat is a UV resistant coating for Visqueen Axiom Guard PRO liquid-applied membrane, suitable for pedestrian traffic and when finished with kiln dried silica sand, it provides an anti-slip surface. When used in conjunction with Visqueen Axiom Guard PRO Topcoat, Visqueen Axiom Guard PRO is suitable for use on...

Price £323.75 (incl. VAT)
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Visqueen Axiom Primer

Visqueen Axiom Primer

Designed to prepare substrates prior to the application of Visqueen Axiom Guard. Significantly improves the bond of the Axiom liquid membrane and helps to ensure a long term watertight finish. Single pack - highly penetrative formulation - improves Axion Guard adhesion Easy to apply - applied by brush or roller Quick drying properties -...

Price £165.76 (incl. VAT)
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Visqueen Ultimate HC BLOK | Compound Barrier And Gas Barrier

Visqueen Ultimate HC BLOK

Suitable for use in all types of buildings to prevent the ingress of harmful levels of volatile organic compounds (VOCs), methane, carbon dioxide and radon. The barrier can be positioned above or below a concrete ground floor slab or above a precast suspended segmental ground floor system, e.g. beam and block floor. Also acts as a damp...

Price £1417.03 (incl. VAT)
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Visqueen High Performance DPM | BBA Certified

Visqueen High Performance DPM

For use in ground floor constructions, positioned above or below the structural floor, to protect buildings against moisture from the ground. Not intended for use where there is a risk of hydrostatic pressure. BBA certified - third party accreditation Robust - resistant to on site damage Flexible - easy to detail and install on site...

Price £142.44 (incl. VAT)
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Visqueen EcoMembrane DPM | BBA Certified

Visqueen EcoMembrane DPM

For use in ground floor constructions, positioned above or below the structural floor, to protect buildings against moisture from the ground. Not intended for use where there is a risk of hydrostatic pressure or accredited for radon applications. Suitability for use of 0.25mm (1000 gauge) Visqueen EcoMembrane DPM should be confirmed and...

Price £44.26 (incl. VAT)
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Visqueen Zedex Non-Combustible Damp Proof Course

Visqueen Zedex Non-Combustible Damp Proof Course

Designed for cavity wall constructions including those with a structural framing system inner leaf and a masonry outer leaf, in residential, commercial and multi-storey buildings. Typical applications include being used as a vertical DPC, or as a site formed surface fixed cavity tray to manage the downward passage of water in cavity wall...

Price £793.30 (incl. VAT)
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Visqueen Zedex High Bond Damp Proof Course | BBA Certified

Visqueen Zedex High Bond Damp Proof Course

For masonry applications including residential and commercial up to and including three storey buildings. It can be site formed into a built-in or surface fixed cavity tray to manage the downward passage of water in cavity wall applications. It can also be used on sleeper walls below a ground floor construction e.g. beam and block floor...

Price £91.58 (incl. VAT)
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Visqueen Zedex CPT High Performance Damp Proof Course | BBA Certified

Visqueen Zedex CPT High Performance Damp Proof Course

For installation in internal walls to prevent rising damp. The DPC is also suitable for installation in external cavity walls with a masonry outer leaf, including walls with a light gauge steel frame, structural timber frame or masonry inner leaf. The DPC is suitable for residential, commercial and multi storey buildings. BBA certified -...

Price £9.61 (incl. VAT)
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Visqueen Zedex Housing Grade Damp Proof Course | BBA Certified

Visqueen Zedex Housing Grade Damp Proof Course

Designed for residential buildings up to and including 3 storeys high, suitable for installation in internal walls to prevent rising damp. Also for installation in external cavity walls with a masonry outer leaf, including walls with a light gauge steel frame, structural timber frame or masonry inner leaf. BBA certified - third party...

Price £8.08 (incl. VAT)
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Protecting Structures from Water Damage

Internal tanking, damp proofing, and waterproofing for below-ground structures are essential components of building protection. These systems are designed to prevent water ingress and rising damp, which can lead to structural damage, mould growth, and long-term decay. Whether applied to basements, foundations, or exterior walls, specialist waterproofing systems offer advanced resistance against moisture penetration.

 

Internal Tanking: Creating a Watertight Barrier

Internal tanking involves applying a waterproof coating directly onto the internal walls of basements or underground structures. This method is used to form a watertight barrier, preventing water from seeping through walls due to external hydrostatic pressure. Tanking is crucial in older buildings or areas prone to high water tables, as it helps preserve the integrity of the structure and prevents water damage to internal surfaces.

 

Damp Proofing: Controlling Rising Damp

Damp proofing is designed to stop rising damp, a common issue in many older properties where moisture from the ground seeps into the walls. Specialist damp proofing products form a barrier that halts moisture from rising through capillary action, protecting the building’s structure and interior surfaces. This type of waterproofing is essential for preventing mould growth, plaster degradation, and damage to wooden elements such as floors and skirting boards.

 

Below-Ground Waterproofing: Reinforcing Foundations

Waterproofing for below-ground structures, including foundations and cellars, ensures that these vital areas are protected from groundwater and external water pressure. Specialist products are designed to be highly resistant to long-term moisture exposure, ensuring that below-ground areas remain dry and free from structural decay. This is especially important in properties located in areas with high water tables or in regions prone to heavy rainfall.

 

Basement Waterproofing

Basements are particularly vulnerable to water ingress, given their positioning below ground level. Specialist basement waterproofing systems form a protective barrier that prevents water from seeping into the internal structure. These systems are suitable for new builds or retrofitting in existing properties and are critical for preventing damp issues, ensuring that basements remain usable and dry.

 

Damp Proofing Solutions

Damp proofing is vital for addressing moisture issues within a building’s walls. Specialist products are applied to stop rising damp from causing significant damage to both the structure and interior finishes. These solutions prevent the growth of mould and other moisture-related problems, extending the life of the property and protecting its value.

 

Waterproofing Exterior Walls

Exterior wall waterproofing is essential for preventing water ingress due to weather exposure. Applied to external surfaces, these products protect the building envelope by repelling water, reducing the risk of moisture penetrating the structure. External waterproofing products are suitable for both residential and commercial applications and can be used on brick, concrete, and stone surfaces.

 

Internal Tanking for Underground Structures

Internal tanking systems are crucial for creating a watertight seal in underground structures such as cellars and basements. These solutions form a continuous waterproof barrier, protecting against moisture seepage caused by external water pressure. Tanking is particularly important in older properties or buildings located in high water table areas.

 

Waterproofing Solutions for Below Ground Structures

Below-ground structures such as foundations, cellars, and retaining walls require specialised waterproofing products to prevent groundwater ingress. These systems are designed for long-term resistance to moisture exposure, ensuring that critical structural elements remain free from water damage.