Stone wool board-also known as stone wool thermal insulation and decorative board-is an inorganic fiber board produced by processing basalt (its primary raw material) through high-temperature melting. Following successful pilot production in June 1981, stone wool board emerged as a new type of material offering thermal insulation, fire resistance, and sound absorption.
Stone wool board consists of artificial inorganic fibers created through high-temperature melting and processing. It is characterized by its lightweight nature, low thermal conductivity, heat-absorbing properties, and non-combustibility. Originally developed for use in construction-where it remains a common application type-it is frequently utilized in industrial buildings and must comply with the regulations outlined in the *Application Types and Basic Requirements for Building Thermal Insulation Materials*.
What is Stone Wool Board?
Stone wool board is an inorganic fiber board primarily composed of basalt. It is manufactured by subjecting the basalt to high-temperature melting, utilizing advanced technology, and incorporating a significant amount of binder. It offers excellent thermal insulation, flame retardancy, and sound absorption capabilities; furthermore, it is extremely lightweight, possesses a very low thermal conductivity, and is non-combustible. Consequently, it is widely utilized across a diverse range of building structures.
What is the Fire Rating of Stone Wool Board?
Stone wool insulation board holds a fire rating of Class A or Class A1. As a preferred building material for exterior walls, stone wool insulation board does not release heat or toxic fumes; even in the event of a fire, it effectively prevents the spread of flames, demonstrating excellent fire resistance. Additionally, it provides effective thermal insulation and heat barrier functions, making it widely applicable in exterior wall systems.
Stone Wool Board Specifications and Thicknesses
Stone wool boards are available in a variety of specifications and thicknesses to meet diverse application requirements. Common specifications include dimensions of 1200mm × 600mm, with thicknesses ranging from 20mm to 200mm. Specific thicknesses-such as 30mm, 40mm, 50mm, 75mm, and 100mm-are readily available. Furthermore, the density of stone wool board typically ranges from 80 kg/m³ to 200 kg/m³, making it suitable for various settings. For instance, stone wool board with a density of 120 kg/m³ exhibits excellent fire-resistant properties and is widely used for the roofing and walls of steel-structure industrial plants and prefabricated modular buildings. The standard width of rock wool boards typically ranges between 950 mm and 1150 mm; this dimension is determined based on specific design requirements as well as transportation and installation conditions.
What are the applications of rock wool boards?
1. Rock wool boards are generally utilized in industrial equipment and as partition walls within the construction industry. In the construction sector specifically, they can be applied to exterior walls, providing effective sound absorption and thermal insulation. Furthermore, they serve as a key material for the construction of fire doors and firewalls.
2. For rock wool boards featuring enhanced water-repellent properties, their moisture resistance is exceptional, with a water absorption rate exceeding 200%. They can be applied to exterior walls, roofing systems, or curtain walls to effectively prevent indoor dampness and provide moisture protection.
3. For rock wool boards designed for fire protection, the primary raw material utilized is the rock wool core itself. Through advanced technological processing, these boards acquire robust fire-resistance and combustion-retardant capabilities, achieving a Class A non-combustible rating. They serve as fireproof materials in elevator shafts, fire doors, and firewalls. By enhancing the overall fire safety performance of a structure, they play a crucial role in ensuring the safety of personnel.
4. For rock wool boards designed for thermal insulation, they possess strong heat-absorbing properties and can withstand temperatures reaching up to 800°C. They are applied to roofs or walls to provide thermal insulation, thereby helping to maintain a more comfortable indoor temperature.
5. For rock wool boards designed for sound absorption, they offer highly effective acoustic performance. They can be installed as sound-absorbing materials in indoor ceilings to significantly reduce noise levels within a room. Additionally, they can be applied to walls or ceilings to dampen impact sounds (such as those caused by physical contact with the wall) or the sound of rainfall, thereby creating a comfortable and tranquil living environment.