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Soundproof Rock Wool Insulation Board Construction Technology
Soundproof Rock Wool Insulation Board Construction Technology
Soundproof Rock Wool Board
High-density rock wool boards used for partition walls are commonly referred to as "sound-proof rock wool."
They are typically used for sound insulation in lightweight walls. The standard structure of such a wall is:
Gypsum board (one or more layers) + keel + rock wool board + gypsum board (one layer or multiple layers)
In this configuration, the rock wool board serves as a sound-absorbing material. It absorbs sound waves that pass through the gypsum board, reducing reflections within the cavity formed between the plasterboard, keel, and the rock wool. This helps improve the overall sound insulation performance of the wall.
Studies have shown that when using rock wool boards with a density of 80–150 kg/m³, the sound insulation performance can be improved by 8 to 15 decibels compared to using rock wool alone without the gypsum board.
This type of rock wool board is not just regular rock wool.
Unlike lower-quality rock wool found in building supply stores, this specialized rock wool board is specifically designed for sound insulation in lightweight walls. It has been fully optimized for acoustic performance:
Density – The density of rock wool used in soundproof partitions is set at 100–200 kg/m³, which is ideal for wall sound insulation. It ensures both optimal soundproofing and structural strength. In contrast, rock wool sold in general markets usually has a density of no more than 60 kg/m³, leading to poor sound insulation and a soft texture that easily collapses, losing its effectiveness over time.
Slag Content – The special rock wool board for soundproof walls doesn’t just focus on slag content; it strictly controls the size of the slag particles and ensures even distribution throughout the board. When sound waves hit the slag particles, they are reflected and scattered, enhancing the sound insulation effect. Lower-quality rock wool often results in uneven density, creating soundproofing holes.
Adhesive Amount – The special rock wool board for soundproof walls is hand-pressed to ensure uniformity and strength. It is produced under high temperature without excessive adhesive, maintaining the fire-resistant properties of rock wool. On the other hand, cheaper rock wool often uses a lot of glue to maintain strength at low density, which reduces fire resistance and causes sagging over time.
Dimensions – The specially designed rock wool board for soundproof walls comes in standard widths like 800mm, 600mm, and 400mm, matching typical keel spacing. This eliminates the need for cutting during installation, reducing dust and irritation for workers. In contrast, most rock wool sold in the market requires cutting on-site, which is less efficient and more labor-intensive.
With these design improvements, the special rock wool board for soundproof partitions can enhance the sound insulation of lightweight walls by more than 10 decibels.
Hubei External Wall Rock Wool Insulation Board
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External Wall Fire-Resistant Rock Wool Board
