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Moisture Resistant Rock Wool Boards For Humid Areas

Hydrophobic Rockwool
December 27, 2025
Category Connection: Hydrophobic Rockwool
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#Rockwool Insulation Board #Rock Wool Insulation Board #Rock Wool Panels
Brief: In this video, we provide an informative overview of Moisture Resistant Hydrophobic Rockwool Boards, explaining their suitability for humid area installations. You'll see how these boards are engineered for thermal insulation, fire resistance, and sound reduction, and learn about the hydrophobic treatments that enable their use in moisture-prone environments. Gain concise insights into the features that matter most for real-world use in construction applications.
Related Product Features:
  • Moisture resistant rock wool boards feature a hydrophobic property with a rate ≥98% and volume water absorption ≤5%.
  • These boards offer excellent fireproofing capabilities, making them suitable for fire-sensitive construction areas.
  • They provide good noise reduction, enhancing acoustic comfort in building applications.
  • With a temperature resistance range from -268℃ to 650℃, they maintain performance in extreme conditions.
  • Available in densities from 40 to 200 kg/m³ and thicknesses from 30mm to 150mm for versatile installation needs.
  • The yellowish-brown boards have a rough surface finish and standard stock size of 1200×600mm.
  • They deliver good electrical insulation properties for added safety in various applications.
  • Designed for use in external wall and roof insulation systems with supporting waterproof designs.
FAQs:
  • What makes these rock wool boards moisture resistant?
    The moisture resistance is achieved through hydrophobic treatment during production, where silicone-based reagents form a water-repellent film on the fibers. This results in a hydrophobic rate ≥98% and volume water absorption ≤5%, meeting China's GB/T 19686-2017 standard for humid area applications.
  • Where are these hydrophobic rock wool boards typically used?
    They are primarily used in construction scenarios requiring both thermal insulation and moisture resistance, such as external wall insulation systems in high-rises, public buildings, and roof insulation for both flat and sloped roofs. They're ideal for fire-sensitive areas where humidity is a concern.
  • How long does the waterproof performance last?
    The hydrophobic treatment provides a waterproof lifespan of 15-20 years. However, for optimal performance in continuous water exposure situations, they should be combined with additional waterproof layers, proper joint sealing, and drainage structures as part of a comprehensive waterproof design.
  • Can these boards withstand direct water immersion?
    While hydrophobic rock wool boards resist moisture absorption effectively, they are not designed for continuous water pressure or long-term immersion. They require proper installation with sealed joints, waterproof membranes, and drainage systems to handle water exposure in humid environments.
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