Product Overview

Dr. Fixit Jointex is a one-component, moisture-cure polyurethane expansion joint sealant manufactured by Pidilite Industries for sealing structural and thermal expansion joints in concrete floors, industrial pavements, terraces, facades, and building elements. Expansion joints (also called movement joints or control joints) are deliberate gaps built into concrete structures at regular intervals (typically every 4 to 6 metres in floor slabs and every 6 to 12 metres in facades) to accommodate the thermal expansion and contraction of the concrete without causing uncontrolled cracking. These joints must be sealed with a flexible, permanently adhesive sealant that can compress and extend with the joint movement while remaining impermeable to water, dust, chemicals, and foot or vehicle traffic. Dr. Fixit Jointex is formulated as a gun-grade sealant (extruded from a cartridge using a caulking gun) that cures by reaction with atmospheric moisture to form a tough, flexible polyurethane rubber with elongation at break greater than 400 percent and excellent recovery after compression and extension cycling. The polyurethane rubber chemistry provides properties critical for construction joint sealing: excellent adhesion to concrete, masonry, steel, glass, and aluminium without primer in most applications; resistance to water, dilute acids and alkalis, petrol, and diesel fuel (important for car park and petrol station floor joints); UV stability adequate for facade joint applications (though colour may change slightly over time under UV); and a Shore A hardness of 20 to 30 (soft flexible sealant) appropriate for construction joints with large movement amplitudes. Dr. Fixit Jointex is available in grey and black colours matching concrete and bituminous paving surfaces. For industrial floor joints subject to hard-wheeled forklift traffic, a harder-grade PU sealant or semi-rigid epoxy nosing system is needed in addition to or in place of standard Jointex — specialist advice from Space Arc Engineering is recommended for high-traffic industrial floors. Space Arc Engineering supplies Dr. Fixit Jointex for flooring contractors, civil works engineers, and building maintenance teams throughout Delhi NCR, Ghaziabad, and Uttar Pradesh.

Applications

• Concrete floor expansion and control joint sealing in commercial and industrial buildings
• Terrace floor expansion joint sealing — watertight flexible sealant for roof deck joints
• Facade and cladding movement joint sealing — between precast panels, masonry, and aluminium frames
• Car park deck joint sealing — fuel and water resistant PU sealant in parking structure joints
• Pavement and road joint sealing — between concrete traffic islands, kerbs, and pavement slabs
• Building perimeter joint sealing — between concrete structure and masonry infill walls

Key Advantages

• Permanently flexible — greater than 400 percent elongation accommodates large joint movement
• Excellent adhesion — bonds to concrete, masonry, steel, glass, and aluminium without primer
• Fuel resistant — petrol and diesel resistant for car park and petrol station floor joints
• Moisture cure — cures at ambient temperature from atmospheric moisture, no mixing required
• Gun-grade application — extruded from standard 300 ml cartridge using caulking gun
• Watertight seal — impermeable to water infiltration and prevents joint contamination with debris