A-class fireproof rock wool board is one of the oldest and most widely used sound-absorbing materials, known for its excellent performance in sound insulation, thermal insulation, and fire resistance. It is commonly used in lightweight walls to enhance acoustic performance and safety. Silent Po owns a fully-owned factory that produces high-quality A-grade fire-resistant rock wool boards with an annual output exceeding 10,000 tons. These products are exported to countries such as Russia, Romania, Kazakhstan, India, and Sri Lanka, and are highly regarded for their reliability and durability.
The A-class fireproof rock wool board, often referred to as "soundproof A-class fire-resistant rock wool board," is specifically designed for use in lightweight wall constructions. Its typical structure includes gypsum board (one or more layers), a metal or wooden framework, A-class fireproof rock wool board, and another layer of gypsum board. In this setup, the fireproof rock wool board plays a crucial role by absorbing sound waves that pass through the gypsum boards, reducing sound reflection within the cavity formed between the layers. This significantly improves the overall sound insulation performance of the wall.
Studies have shown that lightweight walls using A-class fireproof rock wool boards with a density of 80-150 kg/m³ can achieve up to 8-15 dB better sound insulation compared to those without it. Unlike lower-quality alternatives found in the market, Silent Po’s dedicated A-grade fireproof rock wool board is a specially developed product optimized for sound insulation in partition walls. Here's what sets it apart:
**Density**: The special A-class fireproof rock wool board for Silent Po partitions has a density of 100-200 kg/m³, which is considered the ideal range for maximizing sound insulation while maintaining structural strength. In contrast, most A-class rock wool boards sold in the market have a density of no more than 60 kg/m³, leading to poor sound insulation and soft texture, which can easily sag and lose effectiveness over time.
**Slag Ball Content**: Unlike generic products that may prioritize high slag ball content without control, Silent Po’s board strictly regulates the size and distribution of slag balls, ensuring even dispersion throughout the material. This helps scatter and reflect sound waves, enhancing the soundproofing effect. Lower-quality boards often suffer from uneven density, leading to inconsistent acoustic performance.
**Adhesive Usage**: The special A-class fireproof rock wool board is made using a hand-laid cotton process, ensuring uniformity and strength without excessive adhesive. This maintains superior fire resistance and long-term stability. On the other hand, many low-quality boards on the market use excessive glue to maintain structure at low densities, which compromises fire performance and can lead to sagging and degradation over time.
**Dimensions**: To improve construction efficiency, Silent Po’s A-class fireproof rock wool board is manufactured in standard widths of 800mm, 600mm, and 400mm, matching common keel spacing. This eliminates the need for cutting during installation, reducing waste and minimizing exposure to dust and debris for workers. Most commercially available A-grade rock wool boards require on-site cutting, which can be inefficient and messy.
Through these design optimizations, Silent Po’s specialized A-class fireproof rock wool board can improve the sound insulation of lightweight walls by more than 10 decibels, offering a superior solution for acoustic and fire safety in modern construction projects.
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