Electrical Insulation Rock Wool Sheet 1200x600mm 40-200kg/m³ Density Fireproof

Durable Rock Wool Boards Ideal For Long-Term Construction Projects

As a mainstream thermal insulation and fire-resistant material, the durability and persistence of rock wool boards come from their stable physical and chemical structure as well as resistance to environmental interference. Their core characteristics can be outlined in four aspects, and key factors affecting long-term performance also need attention.​

Performance

Their thermal insulation, fire resistance, and other physical properties stay stable for a long time, with excellent adaptability to extreme temperatures and humidity. Ordinary rock wool works stably between -268℃ and 700℃; it won’t deform or lose performance due to thermal expansion and contraction amid winter-summer temperature differences, making it suitable for cold and hot regions. High-quality rock wool, added with water repellents, has a volume water absorption rate below 3%. In high-humidity environments, it won’t reduce insulation performance or gain weight from water absorption, avoiding freeze-thaw damage. As a Class A non-combustible material, its fire resistance—determined by inorganic components—doesn’t weaken over time, ensuring long-term building safety.​

Advantages

Through fiber interweaving and adhesive curing, rock wool boards form a three-dimensional structure, with good compression, tensile, and impact resistance, and slow strength attenuation. They have a compressive strength of ≥40kPa (≥80kPa for high-density types), so they won’t collapse or deform permanently under long-term loads on walls or roofs, maintaining stable insulation thickness. When bonded to substrates with special adhesives (tensile bond strength ≥0.15MPa), they resist stress from temperature changes and wind pressure, reducing cracking and falling risks, which makes them ideal for high-rise external insulation. With surface reinforcement using rendering mortar and mesh, they can prevent internal fiber damage from accidental collisions.​

With proper design, construction, and maintenance, rock wool boards have a service life of over 25 years, matching the 50-year design life of buildings. For external wall insulation, if the protective layer is intact, the core material needs no frequent replacement; for industrial equipment insulation (e.g., boilers), in enclosed environments, it lasts over 30 years, cutting maintenance costs.​

In conclusion, the durability of rock wool boards lies in the chemical stability of inorganic materials, wide temperature adaptability, and anti-aging/anti-interference abilities. With standard use, they have slow performance attenuation and long service life, making them outstanding in building insulation. However, to maximize their long-term value, high-quality products, proper construction, and maintenance are essential.

Comparison of Several Construction Marerials

    Pengzhou Shiyida Building Materials Co., Ltd. was established in 2011 and is located in Chengdu, a tourist city in China. It is one of the domestic manufacturers engaged in new-type refractory, thermal insulation and sound insulation materials. The factory is located in Pengzhou, with more than 100 employees and a factory area of 30,000 square meters. It is a thermal insulation material production enterprise mainly engaged in new-type refractory, thermal insulation and sound insulation materials, and is mainly engaged in the production and sales of rock wool boards and external wall rock wool board.
    The company takes customers as the center, takes high and new technology as the guide, keeps pace with international technology, strictly controls product quality, so that all kinds of our products are sold well in 29 provinces, municipalities and autonomous regions in China, and are widely used in heating, construction, petroleum, electric power, chemical industry, refrigeration, ships, aerospace, smelting, central air conditioning and other industries. The product quality is in a leading position in the industry, and has been recognized by relevant departments and highly praised by customers, with a high reputation.
    Adhering to the business philosophy of "integrity-based, service-oriented", the company's various businesses and management levels continue to develop, and the market area radiates from "centering on Chengdu to the whole Sichuan". To provide users with simple and fast purchasing methods, the company expects to become a priority in the thermal insulation material industry in Sichuan, continuously improve marketing service capabilities, establish good cooperative relations with customers, make progress together and create brilliance together!