{"id":1444,"date":"2026-05-30T20:56:25","date_gmt":"2026-05-30T17:56:25","guid":{"rendered":"https:\/\/cfc.codev-eg.com\/?page_id=1444"},"modified":"2026-05-31T23:18:41","modified_gmt":"2026-05-31T20:18:41","slug":"joint-sealant","status":"publish","type":"page","link":"https:\/\/cfc.codev-eg.com\/ru\/products\/construction-chemicals\/joint-sealant\/","title":{"rendered":"Joint Sealant"},"content":{"rendered":"\t\t
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Division 02 \u2014 Construction \/ Joint Sealants\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Joint\nSealants<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Construction joint sealants are flexible, adhesive compounds applied to movement joints, construction joints, and perimeter gaps in concrete, masonry, and facade assemblies to seal against water, air, and dust ingress while accommodating the cyclic relative movement between adjacent structural elements caused by thermal expansion, loading, and settlement.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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CFC Egypt's joint sealant range addresses the full spectrum of construction sealing requirements. EGYFLEX PU polyurethane sealant is the standard workhorse for floor joints, expansion joints in concrete structures, and general building sealing \u2014 offering high elongation capacity, strong adhesion to concrete and masonry, and trafficability after cure. EGYROD closed-cell polyethylene backing rods provide the correct depth control and bond-breaker function that every properly designed sealant joint requires. EGYCELL SHEET foam provides compression-controlled joint backing for wide or irregular joints. All products are manufactured at our Sadat City, Egypt facility.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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What It Covers\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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The joint sealant category covers three interconnected product types that together deliver a complete, correctly designed joint sealing system.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Polyurethane Sealants\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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EGYFLEX PU is a one- or two-component polyurethane elastomeric sealant for movement joints in concrete floors, facades, expansion joints, window perimeters, and general construction sealing. It offers high elongation capacity (typically 25% or greater joint movement accommodation), strong adhesion to concrete, masonry, metals, and most construction substrates without priming on prepared surfaces, and resistance to foot and light vehicular traffic once cured. Paintable after cure; low odour formulation available.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Backing Rods\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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EGYROD closed-cell polyethylene foam rods are inserted into the joint before sealant application to control the depth-to-width ratio of the sealant bead and prevent bonding at the base of the joint. Three-sided adhesion is the most common cause of sealant joint failure \u2014 EGYROD eliminates this risk by acting as both a bond breaker and a depth gauge. Available in a range of diameters to suit joint widths from 8 mm to 50 mm; selected oversize relative to joint width for positive compression.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Compression Foam Backing\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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EGYCELL SHEET is a closed-cell polyethylene foam sheet used as a compressible backing and bond breaker for wide joints, irregular joint profiles, and transition details where cylindrical rods cannot be used. It is also used as pre-compressed expansion joint filler in concrete elements where slab-to-slab gaps must be maintained through the pour. Cut easily on site to the required dimensions; compatible with polyurethane and polysulphide sealants.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Where They're Used\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Construction joint sealants are specified wherever water exclusion, air tightness, or movement accommodation is required at a gap between structural or facade elements. The following applications represent the most critical sealing requirements in modern construction.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Building Facades & Curtain Walls\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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External facade joints between precast concrete panels, aluminium curtain wall sections, and cladding elements must accommodate thermal movement \u2014 in Egypt's climate, a one-metre aluminium section can move up to 2 mm through daily temperature cycles \u2014 while remaining permanently watertight and weather-resistant. High-movement sealants with proven UV stability and adhesion to concrete, masonry, and coated aluminium are specified for all primary weathering joints in facade assemblies.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Concrete Floor Expansion Joints\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Industrial and commercial concrete floor slabs incorporate expansion and contraction joints at regular intervals to manage the thermal and drying shrinkage movements of the slab. These joints must be sealed to prevent dust, liquids, and debris from entering the joint and lifting slab edges under forklift impacts. Polyurethane sealants provide the right combination of flexibility, trafficability, and adhesion to concrete for floor joint sealing in warehouses, factories, retail, and car parks.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Water-Retaining Structures\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Reservoirs, tanks, treatment plant basins, swimming pools, and water channels require sealants that maintain impermeability under continuous water pressure and resist biological growth and water treatment chemicals. Joint sealing in water-retaining structures uses high-performance elastomeric sealants with permanent flexibility and excellent adhesion; proper backing rod installation ensures that the sealant geometry allows free movement without cohesive failure at the joint centre.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Window & Door Perimeter Sealing\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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The perimeter joint between a window or door frame and the surrounding concrete or masonry must be continuously waterproof and airtight over the building's lifetime, accommodating the differential movement between the lightweight frame and the heavy structure. Polyurethane sealants provide the necessary adhesion to both aluminium and concrete without priming in most cases, and remain permanently flexible, preventing water penetration at one of the most vulnerable weathering interfaces in any building envelope.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Infrastructure & Civil Engineering Joints\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Bridge deck expansion joints, road pavement joints, airport apron joints, and tunnel lining joints represent the most demanding sealing applications in terms of movement, traffic loading, and chemical exposure. These joints require sealants with high Shore hardness for trafficability, wide temperature performance, and resistance to fuel, de-icing salts, and UV exposure. Correct joint geometry design \u2014 width, depth, backing rod size \u2014 is as critical as sealant product selection for long-term infrastructure joint performance.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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CFC Joint Sealant Products\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Polyurethane sealants, backing rods, and foam backing sheets for movement joints and construction joints \u2014 all manufactured in Sadat City, Egypt.\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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