{"title":"Waterproofing Joint Sealants \u0026 Fillers","description":"\u003cp\u003eConstruction joints, movement joints and expansion joints in below-ground concrete structures are among the most common points of water ingress in waterproofed buildings. Where the concrete itself can be made effectively watertight, joints between pours, between structural elements and at service penetrations require dedicated waterproof joint sealants and fillers to maintain the continuity of the waterproof barrier. The range at Construction Supplies UK covers the principal product types used for concrete joint waterproofing in below-ground construction, from hydrophilic strips installed during the initial build to poured sealants applied to existing joints and rapid-setting compounds used to arrest active leaks. Products are available from GCP, Sika, Fosroc and Natural Cement.\u003c\/p\u003e\n\u003ch2\u003eHydrophilic Swelling Waterstops\u003c\/h2\u003e\n\u003cp\u003eHydrophilic swelling waterstops are pre-formed strips or profiles installed within construction joints before the concrete pour. On contact with water, the material absorbs moisture and expands, compressing against the surrounding concrete to form a watertight seal within the joint. They are the standard specification for construction joints in below-ground reinforced concrete structures, including basement walls and floors, retaining walls, tunnels and water-retaining structures, where a reliable, long-term seal is required at the joint between successive concrete pours. GCP Bentorub Waterstop is a sodium bentonite-based hydrophilic strip for use in construction joints in below-ground concrete structures. It is installed directly onto the prepared concrete surface before the adjacent pour, with the bentonite expanding on contact with groundwater to seal the joint.\u003c\/p\u003e\n\u003cp\u003eGCP Adcor 500S is a hydrophilic swelling waterstop in strip form, suitable for construction joints in below-ground and water-retaining concrete structures. SikaSwell S-2 is a one-component, moisture-curing swelling sealant applied by gun to construction joints, expanding on contact with water to fill and seal the joint profile. SikaSwell A is a pre-formed rectangular acrylic swelling profile for construction joints and service penetrations in concrete structures, requiring a minimum of 80mm reinforced concrete cover and suitable for static construction joints only, not movement joints.\u003c\/p\u003e\n\u003cp\u003eHydrophilic waterstops are installed during construction and cannot be retrofitted into an existing joint without breaking out the surrounding concrete. Where joint sealing is required on an existing structure, a poured sealant or injected system is the appropriate approach.\u003c\/p\u003e\n\u003ch2\u003eJoint Fillers and Poured Sealants\u003c\/h2\u003e\n\u003cp\u003eJoint fillers and poured sealants are used to seal construction joints, movement joints and expansion joints in concrete structures, either during construction or as part of remedial sealing work on existing joints. GCP Aerofill 1 is a compressible, closed-cell polyethylene foam backer rod used to fill and support sealant in joints prior to the application of a poured or gun-applied waterproof joint sealant. It controls the depth of sealant application and ensures the correct width-to-depth ratio for sealant performance, preventing three-sided adhesion and allowing the sealant to move freely with joint movement.\u003c\/p\u003e\n\u003cp\u003eFosroc Colpor 200PF is a two-component, cold-applied polyurethane joint sealant for sealing movement joints and construction joints in concrete floors, roads and other trafficked surfaces. It provides a durable, flexible, waterproof seal that accommodates joint movement and resists fuel, oil and hydraulic fluid spillage, making it particularly suitable for garage forecourts, parking areas, cargo bays and other surfaces where chemical exposure is likely.\u003c\/p\u003e\n\u003ch3\u003eStopping Active Water Ingress at Concrete Joints\u003c\/h3\u003e\n\u003cp\u003eWhere water is actively entering through a joint or crack at the time of repair, a standard sealant or waterstop cannot be applied until the flow is arrested. Natcem Waterstop is a rapid-setting, expanding cementitious compound for plugging active water leaks in concrete and masonry. It sets within minutes of application, allowing the leak to be stopped quickly before the main joint sealing or waterproofing system is applied. It is suitable for use on construction joints, cracks and pipe penetrations where water ingress needs to be controlled before remedial work can proceed.\u003c\/p\u003e\n\u003ch3\u003eChoosing the Right Waterproof Joint Sealant or Filler\u003c\/h3\u003e\n\u003cp\u003eThe appropriate product depends on whether the joint is being sealed during construction or as a remedial measure on an existing structure, and on the nature and movement of the joint. For construction joints in new below-ground concrete, hydrophilic swelling waterstops are the standard specification. GCP Bentorub and GCP Adcor 500S are installed as pre-formed strips before the concrete pour. SikaSwell S-2 is the gun-applied alternative where a formed strip is not practical. SikaSwell A is used where a pre-formed acrylic profile is preferred for static construction joints with adequate concrete cover.\u003c\/p\u003e\n\u003cp\u003eFor movement joints and expansion joints in concrete floors and trafficked surfaces, Fosroc Colpor 200PF provides a flexible, durable waterproof concrete joint sealant that accommodates movement. GCP Aerofill 1 backer rod should be used in conjunction with Colpor 200PF to control sealant depth and ensure correct joint geometry.\u003cbr\u003eWhere active water ingress is present, Natcem Waterstop should be used to arrest the leak before any other joint sealing product is applied.\u003c\/p\u003e\n\u003cp\u003eAll products in this range are suitable for use in below-ground concrete joint sealing applications. Where hydrostatic water pressure is present, a full Type A barrier waterproofing system may also be required in addition to joint sealing.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose Construction Supplies UK for Waterproofing Joint Sealants and Fillers?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSpecialist joint waterproofing products: \u003c\/strong\u003eFrom hydrophilic swelling waterstops for new construction to poured joint sealants and rapid-setting leak-stopping compounds, we stock products covering the full concrete joint waterproofing process.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTrusted industry brands: \u003c\/strong\u003eShop GCP, Sika, Fosroc and Natural Cement from stock.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompetitive trade prices:\u003c\/strong\u003e Waterproofing joint sealants and fillers at competitive trade prices with no minimum order value.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFast UK-wide delivery:\u003c\/strong\u003e Reliable nationwide delivery with free shipping on orders over £300.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExpert support when you need it:\u003c\/strong\u003e Our team can help you specify the right joint waterproofing product for your project. Contact us at \u003cstrong\u003esales@constructionsuppliesuk.co.uk\u003c\/strong\u003e or call \u003cstrong\u003e03300 55 32 02\u003c\/strong\u003e.\u003c\/p\u003e","products":[{"product_id":"fosroc-colpor-200pf","title":"Fosroc Colpor 200PF","description":"\u003cp\u003eFosroc Colpor 200PF is designed for the sealing and maintenance of joints in concrete roads, runways and hard standings. It is particularly suited to areas where fuel or oil spillage is likely, including aircraft hard standings, oil terminals, garage forecourts, parking areas and cargo bays.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCold applied - no extra equipment required\u003c\/li\u003e\n\u003cli\u003eResistant to fuel, oil, hydraulic fluids and jet blast\u003c\/li\u003e\n\u003cli\u003ePerforms across temperature extremes, does not harden in cold or soften in heat\u003c\/li\u003e\n\u003cli\u003eElastic recovery: 94%\u003c\/li\u003e\n\u003cli\u003ePot life: approx. 60 minutes at 20°C\u003c\/li\u003e\n\u003cli\u003eTack free: 16–24 hours at 20°C\u003c\/li\u003e\n\u003cli\u003eFull cure: 7 days at 20°C \/ 3–4 days at 25°C\u003c\/li\u003e\n\u003cli\u003eConforms to BS EN 14188-2:2004 and BS 5212 Part 1:1990\u003c\/li\u003e\n\u003cli\u003e25% Movement Accommodation Factor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe two components are mixed on site using a slow speed drill and mixing paddle, then poured directly from the can or applied using a Fosroc G Gun.\u003c\/li\u003e\n\u003cli\u003eThe finished sealant level must be recessed 5–8mm below the pavement surface. \u003c\/li\u003e\n\u003cli\u003eIn trafficked areas, maximum expansion joint width should not exceed 30mm.\u003c\/li\u003e\n\u003cli\u003eJoint faces must be primed with Fosroc Primer 19 or Fosroc Primer 20 before application, with sealant applied between 30 minutes and 4 hours after priming.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fosroc","offers":[{"title":"Default Title","offer_id":57127676379468,"sku":"BM009685","price":81.38,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/fosroc-fosroc-colpor-200pf-1232467359.png?v=1776264293"},{"product_id":"gcp-bentorub-waterstop","title":"GCP Bentorub Waterstop","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Bentorub+ is a permanently active hydrophilic waterstop system for construction joints in concrete sub-structures. The sodium bentonite clay component swells when in contact with water, filling hairline cracks and voids that develop through concrete shrinkage, maintaining a watertight seal throughout the life of the structure. The highly elastic and plastic properties of Bentorub+ also counterbalance initial concrete shrinkage and can fill small honeycombs.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe built-in delayed expansion prevents the strip from reacting prematurely with rainwater before or during installation, giving contractors confidence in wet working conditions. For high-risk situations, Bentorub+ can be used in combination with Infiltra Stop injection grout for added security. Typical applications;  c\u003cspan style=\"font-size: 0.875rem;\"\u003eonstruction joints, cold joints and working joints in in-situ concrete, p\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eipe penetrations through floors and walls, s\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eewer joints and culverts, a\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003egainst slurry walls, steel sheet piling and secant piled walls. Also w\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eater treatment plants, reservoirs, swimming pools and underground parking, m\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eetro and tunnel works\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eSwells to approximately 4x original volume in contact with water\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003ePermanently active for the design life of the structure\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eDelayed expansion prevents premature reaction with rainwater\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFills hairline cracks and small honeycombs in the joint\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFix by gun nailing or adhesive; protect with Bentosteel fixing cage\u003c\/li\u003e\n\u003cli\u003eMinimum concrete cover: 70mm; minimum overlap: 100mm\u003c\/li\u003e\n\u003cli\u003eWRAS approved\u003c\/li\u003e\n\u003cli\u003eNatural sodium bentonite clay and synthetic rubber — green colour\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e","brand":"GCP","offers":[{"title":"Default Title","offer_id":57127683916108,"sku":"BM05661","price":37.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-bentorub-waterstop-1232467460.jpg?v=1776261587"},{"product_id":"gcp-adcor-500s","title":"GCP Adcor 500S","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Adcor 500S delivers higher performance than conventional bentonite or swellable rubber waterstops by combining controlled volumetric expansion with retained cohesive strength and a malleable, conformable profile that adapts to irregular concrete substrates. The 25mm x 20mm strip achieves a minimum 100% volumetric expansion in cement water, generating a watertight seal that resists more than 6 bar (60m) of hydrostatic pressure.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe product can be fixed by masonry nail, with Adcor Adhesive MS on clean substrates, or with Pak Adhesive on dry substrates. At movement joints, Adcor 500S links directly to GCP's Servitite AT 200 or Serviseal AT 240 co-extruded PVC\/hydrophilic waterstops using Secura Clips, providing full waterstop continuity across construction and movement joint intersections.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eNo protective sheet mesh required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eCan be bent 180°\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eRetains cohesive strength \u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cspan\u003eResists at least 6 bar (60m) hydrostatic pressure\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cspan\u003eReproducible swell after wet\/dry cycling; unaffected by freeze\/thaw\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cspan\u003eControlled expansion — reduces risk of concrete spalling\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eMinimum concrete cover: 70mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Not suitable for use in movement joints or with precast concrete components.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTypical applications; Construction joints in in-situ concrete sub-structures, Casting new concrete against existing concrete, floor slabs cast against diaphragm walls, steel sheet piles and secant piled walls, joints between floor slabs and pile caps\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e","brand":"GCP","offers":[{"title":"Default Title","offer_id":57127684538700,"sku":"BM05664","price":78.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-adcor-500s-1232467733.png?v=1776261526"},{"product_id":"gcp-aerofill-1","title":"GCP Aerofill 1","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Aerofil 1 is a versatile expansion joint filler suitable for a wide range of structural and facade applications. Its low compressive strength makes it the recommended choice for soft compression joints in brickwork facades in accordance with BS 5628: Part 3: 2005, and for bridge expansion joints in compliance with Specification for Highway Works Clause 1015, where preventing the transmission of horizontal forces to abutment walls is essential.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe closed cell polyethylene construction resists water absorption, and the material is chemically inert to most dilute acids and alkalis, and resistant to oil and hydrocarbons. Aerofil 1 achieves 90% recovery after release of load, and operates effectively between -5°C and +100°C. It can also be used as a backing filler around pipes, kitchen and sanitary ware, and for internal gap filling prior to surface sealing.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e120kN\/m² compressive strength \u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e90% recovery after release of load\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eChemically resistant, inert to most dilute acids and resistant to oil and hydrocarbons\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eEasy to cut\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOperating temperature -5°C to 100°C\u003c\/li\u003e\n\u003cli\u003eFix with Pak Adhesive \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GCP","offers":[{"title":"10mm","offer_id":57127684669772,"sku":"BM05665","price":34.07,"currency_code":"GBP","in_stock":true},{"title":"20mm","offer_id":57127684702540,"sku":"BM05666","price":66.0,"currency_code":"GBP","in_stock":true},{"title":"25mm","offer_id":57127684735308,"sku":"BM05667","price":81.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-aerofill-1-1232467464.png?v=1776261512"},{"product_id":"sikaswell-s-2","title":"SikaSwell S-2","description":"\u003cp\u003e\u003cspan\u003eSikaSwell® S-2 is a 1-part polyurethane hydrophilic sealant which swells in contact with water to seal all types of construction joints and penetrations in concrete structures. It is used to adhere the SikaSwell® A a profiles to the structure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSuitable for construction joints, pipe and steelwork penetrations through walls and floor slabs, cable duct joints, and all types of connection details, the product can expand up to 200% of its original volume after 30 days in demineralised water, developing a swelling pressure of up to 10 bar in ideal conditions. It is permanently water resistant through repeated wet and dry cycles and offers good adhesion to a variety of substrates. BBA certified in system with SikaSwell® A-2010, and LEED v2009 compliant.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSuitable for construction joints, pipe and steelwork penetrations through walls and floor slabs, cable duct joints, and all types of connection details, the product can expand up to 200% of its original volume after 30 days in demineralised water, developing a swelling pressure of up to 10 bar in ideal conditions. It is permanently water resistant through repeated wet and dry cycles and offers good adhesion to a variety of substrates. BBA certified in system with SikaSwell® A-2010, and LEED v2009 compliant.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1-part, easy and fast to apply\u003c\/li\u003e\n\u003cli\u003eHighly economical joint sealing solution \u003c\/li\u003e\n\u003cli\u003eVersatile solution for joints and details\u003c\/li\u003e\n\u003cli\u003eOptimised expansion rate\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePermanently water resistant\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eGood adhesion to various substrates\u003c\/li\u003e\n\u003cli\u003eBBA system approvals with SikaSwell® A-2010\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate must be dry or matt damp, do not apply in construction joints with standing water\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCuring rate 1 day (+23 °C \/ 50 % r.h.)  2.0mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCuring rate 10 days (+23 °C \/ 50 % r.h.) 10mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePlace SikaSwell® profiles onto SikaSwell® S-2 within a maximum of 30 minutes.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSubstrate\/ambient air and product temperature minimum +5°C, maximum +35°C\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSubstrate must be clean and dry\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRough surfaces are susceptible to leaking. If the surface roughness cannot be leveled with SikaSwell® S-2 the roughness need to be removed. Use an appropriate Sika leveling mortar or mechanical treatment before the SikaSwell® S-2 and SikaSwell® A profile  profile is applied\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFreshly cast concrete can be smoothed with a batten where SikaSwell® S-2 is to be placed.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMake sure any tools are cleaned after use\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Sika","offers":[{"title":"Default Title","offer_id":57127705280844,"sku":"BM05915","price":31.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/sika-sikaswell-s-2-1232467126.webp?v=1776262815"},{"product_id":"sikaswell-a","title":"SikaSwell A","description":"\u003cp\u003e\u003cspan\u003eSikaSwell® A is a rectangular acrylic sealing profile. It swells in contact with water to seal all types of construction joints and penetrations in concrete structures. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe profile can swell up to 150% of its original volume over 30 days, developing a swelling pressure of up to 10 bar in ideal conditions, and is permanently water resistant through repeated wet and dry cycles. It is resistant to a range of chemical substances, easy and fast to apply, and suitable for a variety of substrates. BBA certified in system with SikaSwell® S-2 (Certificate No. 13\/4994), and available in three sizes: 20×5mm (20m roll), 20×10mm (10m roll), and 20×25mm (5m roll).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eHighly economical joint sealing solution\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUnique properties fill small cracks and voids\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eVersatile solution for joints and details\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePermanently water resistant\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEasy and fast to apply\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCan be used in pipe \u0026amp; steel work penetrations through walls floors \u0026amp; slabs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIdeal for construction joints and construction joints in cable ducts\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUsed to seal around all types of penetrations \u0026amp; connection joints\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBBA system approvals with SikaSwell S-2\u003c\/li\u003e\n\u003cli\u003eDo not apply in construction joints with existing standing water.\u003c\/li\u003e\n\u003cli\u003eAmbient air temp maximum is +35°C and minimum +5°C\u003c\/li\u003e\n\u003cli\u003eSubstrate temperature  maximum +35°C \u0026amp; minimum +5°C\u003c\/li\u003e\n\u003cli\u003eLow density concrete or voids will prevent SikaSwell from developing its waterproofing function.\u003c\/li\u003e\n\u003cli\u003eClean all tools immediately after use\u003c\/li\u003e\n\u003cli\u003eFor full information, read the product data sheet in the Technical Information  section on this page\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Sika","offers":[{"title":"A2005","offer_id":57127706067276,"sku":"BM05906","price":196.6,"currency_code":"GBP","in_stock":true},{"title":"A2010","offer_id":57127706100044,"sku":"BM05907","price":196.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/sika-sikaswell-a-1234769262.jpg?v=1777455973"},{"product_id":"newton-flexproof-106-system","title":"Newton FlexProof 106 System","description":"\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"markdown markdown-main-panel stronger enable-updated-hr-color\" id=\"model-response-message-contentr_935ab606bcd817b7\" aria-live=\"polite\" aria-busy=\"false\" dir=\"ltr\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eNewton FlexProof 106 is a highly advanced single component liquid waterproofing material that forms an elastomeric polymer membrane capable of handling severe building movements and deformations. It is specifically designed to provide a robust seal to both static and non-static construction joints. The system is available in two main variants: X-1, a thixotropic paste version for surface sealing over joints, and NV, a lower viscosity version that can be poured into movement joints. This material is uniquely versatile as it can be applied in sub-zero temperatures and onto damp substrates while remaining rainproof in just a few minutes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"3,0,0\"\u003eRainproof in minutes allowing for rapid site progress in inclement weather\u003c\/li\u003e\n\u003cli data-path-to-node=\"3,1,0\"\u003eCapable of handling severe building movements and deformations\u003c\/li\u003e\n\u003cli data-path-to-node=\"3,2,0\"\u003eCan be applied at temperatures as low as -10 degrees Celsius\u003c\/li\u003e\n\u003cli data-path-to-node=\"3,3,0\"\u003eExcellent adhesion to damp concrete and most common building materials\u003c\/li\u003e\n\u003cli data-path-to-node=\"3,4,0\"\u003eResistant to the high alkalinity of concrete and various chemicals\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"5,0,0\"\u003eSupplied in 15kg (X-1), 7.5kg (NV), or 290ml cartridges (X-1C)\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,1,0\"\u003eProduct Codes 106B (X-1) and 106NV (NV)\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,2,0\"\u003eGrey in colour\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,3,0\"\u003eMembrane thickness of 2.0mm when not over joints and 2.5mm over joints\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,4,0\"\u003e10 year UV resistance rating\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Newton Waterproofing","offers":[{"title":"290ml","offer_id":57262498283852,"sku":"BM06392","price":20.89,"currency_code":"GBP","in_stock":true},{"title":"7.5kg","offer_id":57262498316620,"sku":"BM06393","price":225.87,"currency_code":"GBP","in_stock":true},{"title":"15kg","offer_id":57262498349388,"sku":"BM06394","price":389.14,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/newton-waterproofing-newton-flexproof-106-system-1232467281.jpg?v=1776261971"},{"product_id":"newton-foamstop-backing-rod","title":"Newton FoamStop Backing Rod","description":"\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"markdown markdown-main-panel stronger enable-updated-hr-color\" id=\"model-response-message-contentr_935ab606bcd817b7\" aria-live=\"polite\" aria-busy=\"false\" dir=\"ltr\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eNewton FoamStop is a range of highly compressible, closed-cell polyethylene foam backing rods designed for use within construction and movement joints. The primary function of the FoamStop is to act as a depth gauge and bond breaker, ensuring that liquid waterproofing membranes like Newton FlexProof 106 are applied at the correct design thickness. Because it is closed-cell, it does not absorb water and provides a stable, non-adherent base that prevents \"three-sided adhesion,\" allowing the sealant above to expand and contract freely with the building’s movement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEnsures precise depth control for liquid-applied joint sealants\u003c\/li\u003e\n\u003cli\u003eActs as a bond breaker to allow for maximum membrane elasticity\u003c\/li\u003e\n\u003cli\u003eHighly compressible and flexible, easily conforming to irregular joint widths\u003c\/li\u003e\n\u003cli\u003eClosed-cell structure prevents moisture absorption and air bubbling in the sealant\u003c\/li\u003e\n\u003cli\u003eChemically inert and compatible with cold-applied sealants and membranes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"5,0,0\"\u003eAvailable in 10mm, 15mm, 20mm, 25mm, 30mm, 40mm, 50mm, and 75mm diameters\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,1,0\"\u003eSupplied in 1m lengths (standard for easy handling and installation)\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,2,0\"\u003eThe diameter of the FoamStop selected should be approximately 150% of the width of the joint (e.g., use a 15mm rod for a 10mm joint)\u003c\/li\u003e\n\u003cli data-path-to-node=\"5,3,0\"\u003eCan be inserted using a blunt tool to avoid piercing the cells; ends should be butted tightly together without the need for adhesive\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Newton Waterproofing","offers":[{"title":"10mm x 1m","offer_id":57286761611596,"sku":"BM06395","price":1.01,"currency_code":"GBP","in_stock":true},{"title":"15mm x 1m","offer_id":57286761644364,"sku":"BM06396","price":1.19,"currency_code":"GBP","in_stock":true},{"title":"20mm x 1m","offer_id":57286761677132,"sku":"BM06397","price":1.27,"currency_code":"GBP","in_stock":true},{"title":"25mm x 1m","offer_id":57286761709900,"sku":"BM06398","price":1.45,"currency_code":"GBP","in_stock":true},{"title":"30mm x 1m","offer_id":57286761742668,"sku":"BM06399","price":1.52,"currency_code":"GBP","in_stock":true},{"title":"40mm x 1m","offer_id":57286761775436,"sku":"BM06400","price":1.63,"currency_code":"GBP","in_stock":true},{"title":"50mm x 1m","offer_id":57286761808204,"sku":"BM06401","price":2.46,"currency_code":"GBP","in_stock":true},{"title":"75mm x 1m","offer_id":57286761840972,"sku":"BM06402","price":6.17,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/newton-waterproofing-newton-foamstop-backing-rod-1232467105.png?v=1776262067"},{"product_id":"natcem-waterstop-5kg","title":"Natcem Waterstop 5kg","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eWaterstop is an environmentally friendly, rapid setting water-plug mortar designed to stop leaks in seconds. Once mixed with water, it begins to set in just 90 seconds and is fully set within 2½ minutes at 20°C — making it one of the fastest acting leak-sealing mortars available. Suitable for sealing leaks, stopping water ingress and use in direct contact with potable water, it is DWI Regulation 31 approved (ref: 56\/4\/1217) and tested to BS 6920 for effect on water quality. Contains no chemical additives, requires only the addition of water, and sets underwater — usable down to 0°C. Can be overcoated within one hour of setting. Supplied in a 5kg tub with no limited shelf life when stored in dry conditions.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eRapid setting — starts to set in 90 seconds, fully set in 2½ minutes at 20°C\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eStops leaks in seconds — simply apply and hold in position until set\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eSets underwater and in cold conditions down to 0°C\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eDWI Regulation 31 approved for contact with potable water (ref: 56\/4\/1217)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eTested to BS 6920: Effect on Water Quality\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eNo chemical additives — just add water\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eExcellent adhesion to roughened substrates\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eCan be overcoated, covered or painted within one hour of setting\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eEnvironmentally friendly — no limited shelf life when stored correctly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eMix ratio: 1 part clean water to 3 parts Waterstop — knead to a putty consistency within one minute\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eYield: 1 x 5kg tub with approximately 1.9 litres of water produces around 2 litres of mortar\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eDo not use on frozen or overheated substrates (outside 0°C–30°C range)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eFor large leaks, seal in small sections starting from the top and working downwards\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eSetting time can be slowed with cold water in hot conditions, or accelerated with warm water in cold conditions\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eAlways refer to the Waterstop Product Data Sheet and Safety Data Sheet before use\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Natural Cement","offers":[{"title":"Default Title","offer_id":57425701405004,"sku":"BM06259","price":39.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/natural-cement-waterproofing-natcem-waterstop-5kg-1235040071.jpg?v=1777636010"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/collections\/Sikaswellpostandprewater.jpg?v=1775135896","url":"https:\/\/www.constructionsuppliesuk.co.uk\/collections\/waterproofing-joint-sealants-fillers.oembed","provider":"Construction Supplies UK","version":"1.0","type":"link"}