FRP Lining

FRP lining is a reinforced composite barrier made from fiberglass and high-performance resins (Isophthalic, Vinyl Ester, Super Vinyl Ester, Epoxy) applied over substrates like RCC, MS, PP, PVC, or brick to protect against corrosion, leakage, and abrasion. Compared to rubber or epoxy coatings, FRP linings offer far better chemical resistance across a wide pH and temperature range, along with much higher mechanical strength and impact resistance. Unlike tiles or bricks, FRP creates a seamless, joint-free surface, eliminating grout joints that often crack and become leak paths in chemical plants. For heavy-duty applications in pickling tanks, ETP sumps, chemical floors, or scrubber bodies—especially in high-corrosion belts like Ankleshwar or Vapi—FRP lining provides longer life and lower maintenance than most alternatives. It is particularly attractive for clients who want to extend the life of existing RCC or MS structures without full replacement, while still meeting safety and compliance expectations.​ ​

Reconsky FRP lining is widely used in chemical, pharmaceutical, fertilizer, metal finishing, pulp & paper, mining, and wastewater treatment industries where exposure to aggressive acids, alkalis, and solvents is routine. Typical assets lined include internal surfaces of MS or RCC tanks, process vessels, neutralisation pits, drainage channels, scrubbers, chimneys, battery rooms, and spill containment areas. In ETP and STP facilities, FRP lining protects concrete tanks, collection pits, and aeration basins from long-term chemical attack and seepage into soil or groundwater. For food and pharma plants, hygienic FRP linings with smooth, easy-to-clean surfaces and food-grade resin systems help maintain cleanliness and avoid contamination. Construction segments also use FRP lining for waterproofing basements, terraces, rooftops, and structures that must resist moisture plus chemical exposure.​ ​

Reconsky customises FRP lining systems using resin types such as Isophthalic polyester, Vinyl Ester, Super Vinyl Ester, and Epoxy, chosen based on chemical compatibility and operating temperature. Typical lining thickness starts from around 3 mm for moderate-duty applications and can go up to 10–20 mm or more for highly corrosive or mechanically stressed areas. Standard systems handle temperatures up to about 100 °C, while specialised resin formulations can be selected for higher-temperature services as required. Build-up is usually done in multiple layers (chopped strand mat, woven roving, surface veil) to balance chemical resistance, mechanical strength, and flexibility. Colour and finish can be customised to improve visibility, cleaning, and area identification (for example, different colours for acid pits, alkali pits, or neutral areas in a Gujarat ETP plant).​​

Before FRP lining, Reconsky teams prepare the substrate by grit blasting, wire brushing, or chemical cleaning to remove loose particles, rust, oil, and laitance, ensuring strong adhesion. A primer or tie coat compatible with both substrate and FRP system is applied, followed by carefully layered resin and fiberglass reinforcement using hand lay-up, spray-up, or other proven methods. Critical areas like corners, joints, nozzles, and manholes receive additional reinforcement to prevent stress cracking and leakage in service. After curing, the lining is inspected visually and by spark testing or other non-destructive methods, and where necessary hydrotested, to confirm that there are no pinholes, holidays, or weak spots. Detailed documentation, including material batch certificates and test reports, is provided so customers can show compliance during internal safety audits or third-party inspections.​​

By acting as a robust, impermeable barrier, FRP lining protects concrete and steel structures from chemical attack, thereby preventing structural degradation, leakage, and costly unplanned shutdowns. A properly designed and executed FRP lining system can extend asset life by 10–20+ years with minimal maintenance, which significantly lowers lifecycle cost versus frequent rebuilding or re-lining. It also helps plants comply with environmental norms by preventing seepage of hazardous liquids into soil and groundwater, reducing risk of regulatory penalties and community complaints. For high-risk zones such as acid pickling tanks, battery rooms, and ETPs common in Gujarat’s industrial estates, FRP lining improves workplace safety and reliability, which is valued by insurers, auditors, and global customers. When combined with Reconsky’s experienced project execution and after-sales support, this makes FRP lining a strategic investment in plant reliability, compliance, and ESG positioning.​