XPS sheet, widely known in the market as “Jambolon,” is a premium-grade thermal insulation material made from extruded polystyrene, designed to deliver exceptional performance in a wide range of construction, waterproofing, and energy-saving applications. Produced through a continuous extrusion process, XPS has a unique closed-cell structure that provides superior thermal resistance (low thermal conductivity), excellent moisture resistance, and high compressive strength, setting it apart from other types of insulation like EPS (Expanded Polystyrene) or traditional insulating materials. The term “Jambolon” is popularly used in South Asian markets, particularly in Pakistan and India, where XPS has become a go-to solution for architects, builders, and engineers seeking to improve energy efficiency and building sustainability. One of the most significant advantages of XPS sheets is their ability to maintain insulating performance over time, even when exposed to harsh environmental conditions such as heat, cold, rain, and humidity. This makes Jambolon highly suitable for use in areas like roof insulation, basement walls, floor slabs, cavity walls, exterior walls (EIFS systems), inverted roofs, terraces, cold storage facilities, and more. It is also commonly used as a base in waterproofing systems due to its non-absorbent nature, which prevents water seepage and reduces the risk of dampness and fungal growth.

XPS Jambolon sheets are lightweight yet rigid and durable, making them easy to handle, cut, and install with minimal effort. They are available in various thicknesses—typically ranging from 25 mm to 100 mm—and sizes depending on the project requirements. Their consistent density and smooth surface allow them to be laminated or coated with other waterproofing or protective materials without compromising performance. In addition to mechanical durability, XPS sheets are resistant to most chemicals and do not support the growth of mold or bacteria, making them a hygienic and long-lasting option for both residential and commercial buildings. They are also environmentally friendly in terms of energy savings, as they reduce the load on HVAC systems by maintaining interior temperatures, which ultimately lowers electricity consumption and contributes to green building certifications such as LEED. Furthermore, XPS does not degrade or decompose over time, making it a cost-effective long-term investment. Many builders also prefer Jambolon over other insulation materials because it does not lose its shape or structural integrity under pressure, even under high loads, which is crucial for applications like flooring under screed or in load-bearing wall assemblies.