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 applied in the construction of lightweight walls to enhance acoustic comfort and safety. Silent Po owns a fully-owned factory that produces high-quality A-grade fire-resistant rock wool boards, with an annual production capacity exceeding 10,000 tons. These products are exported globally to countries such as Russia, Romania, Kazakhstan, India, and Sri Lanka, ensuring reliable performance and compliance with international standards.
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. The typical structure includes layers of gypsum board on both sides, supported by a framework (keel), with the A-class fireproof rock wool board placed in between. This material plays a crucial role in absorbing sound waves that pass through the gypsum board, reducing internal reflections within the cavity formed by the wall components. As a result, it significantly improves the overall sound insulation of the wall.
Studies have shown that lightweight walls using A-class fireproof rock wool boards with a density of 80-150kg/m³ can achieve 8-15dB better sound insulation compared to those without it. Unlike standard fireproof rock wool boards found in the market, which may be of lower quality or improperly manufactured, Silent Po’s dedicated A-grade fireproof rock wool board is a newly developed product optimized for acoustic performance in partition walls.
One key feature of this specialized board is its optimal density range of 100-200kg/m³, which provides the best balance between sound insulation and structural integrity. In contrast, many commercially available A-class fireproof rock wool boards have densities below 60kg/m³, leading to poor soundproofing and a soft texture that can easily sag over time, losing effectiveness.
Another important aspect is the control of slag ball content. While some manufacturers focus only on increasing slag ball quantity, Silent Po ensures even distribution and precise size control. This helps in scattering and reflecting sound waves, enhancing the material's sound absorption properties. On the other hand, uneven density in low-quality products can lead to inconsistent performance.
The glue amount is also carefully managed. Silent Po uses a controlled application process, ensuring uniformity and strength without excessive adhesive. This not only maintains fire resistance but also prevents degradation over time. In contrast, cheaper alternatives often add too much glue to compensate for low density, which can compromise fire safety and lead to sagging or crumbling.
Finally, the dimensions of the board are tailored for ease of installation. Available in widths of 800mm, 600mm, and 400mm, they match standard keel spacing, eliminating the need for cutting during installation. This reduces waste and minimizes exposure to debris for workers. Standard products, however, are often cut on-site, which can affect both efficiency and quality.
With these design optimizations, Silent Po’s A-grade fireproof rock wool board can improve the sound insulation of lightweight walls by more than 10 decibels, offering superior acoustic performance and long-term reliability.
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