JFEロックファイバー List of Products and Services

The insulation effect of "rock wool" is demonstrated by the fact that over 95% of its volume is occupied by air, which is separated into fine gaps by fibers, making it difficult for the air to move. As the temperature of the air within the rock wool rises, it becomes more active, leading to a decrease in insulation performance with the increase in ambient temperature. However, the higher the density, meaning the greater the number of fibers per unit volume, the more resistance to air flow increases, preventing a decline in insulation performance. "Roxceram" is excellent in fire resistance and can be used as an insulation material even in high-temperature areas of around 400°C, making it widely utilized under harsh conditions such as in plant equipment. For more details, please refer to the PDF download below. 【Insulation Performance by Temperature Range】 ■ Low Temperature Range (below 100°C) - It shows a minimum value with a density of 80-100 kg/m³, but there is no significant difference across the entire density range. ■ High Temperature Range (above 100°C) - Above 100°C, the thermal conductivity increases quadratically with rising temperature. - This trend becomes milder as the density increases. *For more details, please refer to the PDF document or feel free to contact us.

• Rock wool
• Rock wool

The moisture-resistant residential rock wool insulation "AmuMatt" is a filling method insulation material suitable for ceilings, walls, and floor partitions. It is ideal for multi-family housing such as apartments, daycare centers, and wooden nursing homes due to its excellent fire resistance and soundproofing properties. 【Features】 ■ Can be used for partition walls and intermediate floors in multi-family housing with specified density ■ Easy to install ■ A brochure with examples of insulation material selection is currently being offered *For more details, please contact us or download the PDF to view.

• Fiber wall
• Rock wool
• Insulation work

The moisture-resistant residential rock wool insulation "Amu Matt" is a filling method insulation material for ceilings, walls, and floors. In the event of a fire, it suppresses the spread of flames and secondary fires. It is difficult to absorb water, maintaining its insulation performance semi-permanently. It prevents termites, corrosion, and stains, extending the lifespan of the building. 【Features】 ■ Density: 30kg/m³ or more (MA) ■ Thermal conductivity: 0.038W/m·K (23°C) ■ Complies with JIS A 9521 building insulation standards *Technical materials that indicate energy-saving measures are currently available. For more details, please contact us or download the PDF to view.

• Fiber wall
• Rock wool
• Insulation work

Rock wool is filled with tiny, abundant, stationary air. It creates a wall of still air that prevents heat loss. It also excels in fire resistance and is recognized as a legally non-combustible material. It has excellent water resistance, repelling water, so there is no need to worry about condensation in case of emergencies. Moreover, its insulation performance is semi-permanent. Additionally, it excels in soundproofing, safety, environmental friendliness, and cost-effectiveness. 【Features】 ■ It exhibits excellent effects in insulation and heat retention. ■ It prevents noise with superior sound absorption performance. ■ It is a non-combustible material certified by the Minister of Land, Infrastructure, Transport and Tourism. ■ It prevents condensation and prolongs the lifespan of structures. *For more details, please request materials or view the PDF data from the download.

• Rock wool
• Rock wool

The residential insulation material "Amumat" is an insulation material for filling methods, ceilings, walls, and floor interfaces. It is a moisture-resistant rock wool insulation material, with a moisture barrier film attached on the indoor side. The ear width is approximately 30mm, which has improved workability. There are various types of insulation materials, but they can be broadly categorized into fiber-based and foam plastic-based. Rock wool is fiber-based and is an insulation material made by melting high furnace slag generated during steelmaking and then fiberizing it using centrifugal force and other methods. For more details, please download the catalog.

• Fiber wall
• Rock wool
• Insulation work

The residential insulation material "AmuMatt Premium" has improved its condensation prevention performance in addition to the characteristics of rock wool, such as thermal insulation, water resistance, and heat resistance. This helps prevent moisture intrusion within the wall structure, maintaining the durability of the structural framework and prolonging the life of the house. With a width of 30mm or more, it enhances workability, and the six-sided pack reduces the prickly sensation during installation. The included vapor barrier film is thicker than conventional ones, further strengthening condensation prevention measures. It has a moisture permeability resistance of 0.082 [m²·s·Pa/ng] and over 170 [m²·h·mmHg/g], equivalent to JIS A 6930 Class A products. For more details, please download the catalog.

• Rock wool
• Insulation work

The floor insulation material "Amu Matt Floor Board" is a floor rock wool board for the joist method. The indoor side is covered with polyethylene film. Our manufacturing process reuses high-temperature blast furnace slag, a byproduct of steelmaking, and produces the product using half the energy of conventional processes. For more details, please download the catalog.

• Rock wool
• Insulation work

The floor insulation material "Amumat Floor Board II Nedales" is the ideal floor insulation for the Nedales construction method. It complies with the specification standards (supplementary provisions) of the design and construction guidelines for regions 4 to 7 based on the 2013 standards. Please use the dedicated hardware "Kakaru-no" for installation. Our manufacturing process reuses high-temperature blast furnace slag, a byproduct of steel mills, allowing us to produce products using half the energy of conventional processes. For more details, please download the catalog.

• Rock wool
• Insulation work

The floor insulation material "Amumat Floor Roll" is an ideal rock wool insulation for floor joists. Our manufacturing process reuses high-temperature blast furnace slag, a byproduct of steelmaking, and produces the product using half the energy of conventional processes. We strive to prevent the occurrence of nonconforming products, improve manufacturing technology, and ensure product quality characteristics, producing and selling products that meet customer needs and expectations. For more details, please download the catalog.

• Rock wool
• Insulation work

The external insulation material "Roxceram Board" is a JIS A 9521 building insulation material that can be used for external insulation methods and additional insulation methods. Installation can be done using either the batten method or a dedicated bracket method. Our manufacturing process reuses high-temperature blast furnace slag, a byproduct of steelmaking, and produces products using half the energy of conventional processes. For more details, please download the catalog.

• Heat insulation and heat shielding methods

The soundproofing and thermal insulation material "Roxeram Mat Felt" is ideal for buildings specified in Ministry of Construction Notification No. 1827, etc., with a specific gravity of 0.04 or higher, as of December 28, 1970. There are products available in the form of mats with ears in a six-sided pack and felt shapes with or without a film on one side. Our manufacturing process reuses blast furnace slag, a byproduct of steel mills, at high temperatures, producing products with half the energy of conventional processes. For more details, please download the catalog.

• Rock wool
• Insulation work
• Heat insulation and heat shielding methods

The airtight auxiliary material "Moisture-proof airtight sheet" is a plastic-based moisture-proof film for residential use equivalent to JIS A 6930 Type B. By covering the entire building with the moisture-proof airtight sheet, high airtightness can be easily achieved at a low cost. It is installed on the indoor side of the insulation material to prevent moisture from the indoor environment from penetrating into the wall. Our manufacturing process reuses high-temperature blast furnace slag, a byproduct of steelmaking, allowing us to produce the product with half the energy of conventional processes. For more details, please download the catalog.

• Humidity control materials
• Waterproofing work
• Insulation work

Due to its high elasticity and adhesion, it excels in following the contours of wooden parts. It has excellent tearability without a release paper, allowing for smooth construction work and reducing waste on site.

• Humidity control materials
• Waterproofing work
• Insulation work

The rock wool non-combustible material, insulation, and sound-absorbing material "Roxeram Felt without Outer Cover" is lightweight and flexible, making it ideal for installation in partition walls and ceilings. It complies with JIS A 9504 for artificial mineral fiber insulation materials and JIS A 6301 for sound-absorbing materials. It is used for insulation and sound absorption in building walls and ceilings, sound absorption in apartment buildings and general houses, and as filling core material for partition walls and doors. It is also possible to apply a poly sheet. For more details, please download the catalog.

• Rock wool
• Rock wool

The rock wool non-combustible material, insulation, and sound-absorbing material "Roxeram Felt with Outer Cover" is lightweight, flexible, and has improved applicability to curved surfaces. It meets JIS A 9504 standards for artificial mineral fiber insulation materials and JIS A 6301 standards for sound-absorbing materials. The outer cover is made of aluminum glass cloth, which is a combination of 20μm aluminum foil and JISR3414 (glass cloth) EP11E. The aluminum craft consists of 7μm aluminum foil bonded to 50g/m² craft paper. It is used for thermal insulation of air conditioning ducts, piping, and as insulation and condensation prevention materials for walls and ceilings of buildings, as well as for soundproofing in apartment buildings. The aluminum glass cloth covering complies with the specifications of the Ministry of Land, Infrastructure, Transport and Tourism. For more details, please download the catalog.

• Rock wool
• Rock wool

The rock wool non-combustible material, insulation, and sound-absorbing material "Roxceram Board" offers a wide range of products from low density to high density, compliant with JIS A 9504 artificial mineral fiber insulation materials and JIS A 6301 sound-absorbing materials. It is used for insulation and heat retention in plants, soundproofing in factories and machinery rooms, partition panels, insulation, soundproofing, and core materials for various building materials, floor insulation, backup for various fire-resistant materials, and fireproofing and insulation for ships and refrigerators. We offer both uncoated and water-repellent Hassui boards. For more details, please download the catalog.

• Rock wool board
• Rock wool
• Rock wool

The rock wool non-combustible material, insulation, and sound-absorbing material "Roxceram Decorative Board" is a decorative sound-absorbing material used in machine rooms and studios, made from JIS A 9504 artificial mineral fiber insulation material and JIS A 6301 sound-absorbing materials. It is used for the walls and ceilings of machine rooms and electrical rooms, as well as in theaters, halls, and studios. It is also possible to apply aluminum glass cloth, etc. The glass cloth is an alkali-free plain woven glass cloth as specified by JISR3414 EP18A. For more details, please download the catalog.

• Rock wool board
• Rock wool
• Rock wool

The rock wool non-combustible material, insulation, and sound-absorbing material "Roxeram Wired Blanket" is a JIS A 9504 artificial mineral fiber insulation material and JIS A 6301 sound-absorbing material that allows for easy installation on complex curved surfaces due to the strength of the hexagonal wire mesh. It is used for thermal insulation in industrial facilities such as power plants and incinerators, as well as for insulation and heat retention in various tanks, round ducts, and large-diameter pipes, and for the insulation of pulp flanges. Orders can be placed without the hexagonal wire mesh. For more details, please download the catalog.

• Incinerators and chimneys
• Rock wool
• Insulation work

The rock wool non-combustible material, insulation, and sound-absorbing material "Roxceram Metal Lath Blanket" is a durable structure suitable for insulation and heat retention in high-temperature areas, classified as JIS A 9504 artificial mineral fiber insulation material and JIS A 6301 sound-absorbing material. It is used for insulation and heat retention in large industrial facilities such as power plants, various dryers, heat treatment equipment, heat exchangers, and dust collectors. Metal lath refers to flat lath No. 0 that has been treated for rust prevention according to JIS A 5505. For more details, please download the catalog.

• Rock wool
• Insulation work
• others

The rock wool non-combustible material, insulation, and sound-absorbing material "Roxeram Belt" is suitable for construction, heat resistance, and compression strength, making it ideal for curved surfaces. It complies with JIS A 9504 artificial mineral fiber insulation material and JIS A 6301 sound-absorbing material. It is used for insulation and heat retention in air conditioning systems (ducts, pipes, bends), plant piping insulation, insulation in apartment buildings, and insulation for range exhaust ducts. We offer "cold mesh adhesive," which is a thin cotton fabric with a coarse plain weave that has been glued, and "aluminum glass cloth adhesive," which combines 20μm aluminum foil with JISR3414 (glass cloth) EP11E. For more details, please download the catalog.

• Rock wool
• Insulation work
• others

Rock wool non-combustible material, insulation, and sound-absorbing material "Roxeram Granular Cotton" is a JIS A 9504 artificial mineral fiber insulation material and JIS A 6301 sound-absorbing material, featuring strong and flexible fibers suitable for various applications. It is used as industrial material, rock wool sound-absorbing boards, filling material for ceramic exterior materials, fireproof coatings, oxygen separators, and more. It is applied as a raw material for spraying and industrial materials. For more details, please download the catalog.

• Rock wool
• Insulation work
• others