Pengzhou Shiyida Building Materials Co., Ltd.
Integrity first, service foremost.
Add to Cart
Rock Wool Boards With Excellent Fire Resistance For Safe Building Applications
In the construction industry, rock wool boards stand out as crucial safety materials due to their excellent fire resistance. Their benefits span the entire lifecycle of buildings, playing an irreplaceable role from daily use to emergency protection. The key advantages are detailed in the following aspects.
Safeguarding Lives and Extending Evacuation Time
Rock wool boards are non-combustible, typically meeting the A1 class standard in GB 8624-2012 Classification for Burning Behavior of Building Materials and Products. During a fire, they do not burn, emit open flames, or release toxic fumes—major causes of casualties in building fires (such as suffocation or stampedes from poor visibility). By blocking fire spread and maintaining structural stability, rock wool boards create clear, safe evacuation routes, extending the critical escape time by 30-60 minutes and significantly improving survival rates.
Reducing Property Loss and Repair Costs
Building fires cause losses not only to furniture and equipment but also to the building structure itself. Traditional flammable insulation materials accelerate fire spread to walls and roofs, damaging load-bearing components and even leading to collapse—requiring huge repair costs and long timelines. In contrast, rock wool boards curb fire spread and retain structural strength under high temperatures. For example, in residential buildings, they prevent fire from spreading between adjacent rooms, minimizing single-household losses and overall repair expenses.
Meeting Fire Codes and Avoiding Compliance Risks
With stricter building safety standards, countries have rigid requirements for material fire resistance. China’s Unified Standard for Design of Civil Buildings and Code for Fire Protection Design of Buildings mandate non-combustible or flame-retardant materials for insulation, partitions, and ceilings in densely populated buildings (residences, malls, hospitals, schools). As a natural non-combustible material, rock wool boards easily meet these requirements, helping developers and contractors avoid project halts, failed inspections, and penalties due to non-compliant materials—ensuring smooth project progress and solid ground for future safety checks.
Enhancing Overall Building Fire Rating and Long-Term Safety
A building’s fire resistance depends on its entire material system. Rock wool boards are versatile: used in exterior wall/roof insulation, firewalls, partition walls, and cable shaft sealing. In malls, they block vertical fire spread between floors; in cable projects, they seal shaft gaps to prevent "chimney effect"-induced rapid fire escalation. By applying rock wool boards in key areas, buildings form a "three-dimensional" fire protection system, maintaining high safety stability over decades—ideal for residential buildings and industrial workshops with long service lives.
Balancing Fire Protection and Functionality
Rock wool boards do not sacrifice other functions for fire resistance. They integrate insulation, sound absorption, and moisture resistance, suiting diverse scenarios. In cold regions, they reduce winter heat loss (cutting heating costs) while ensuring safety during high fire seasons. In hospitals and laboratories (with strict environmental demands), their non-combustible and non-toxic properties meet fire requirements without harming indoor air quality. This "multi-functional" feature eliminates the need for additional materials, simplifying construction while balancing safety and practicality.
Comparison of Several Construction Marerials
| Comparison Items | Rock Wool Board | Polystyrene Board (EPS/XPS) | Polyurethane Board (PU) | Glass Wool Board | Aerated Concrete Block |
| Combustion Performance | Class A non-combustible (highest grade) | Class B1-B2 (flame-retardant-combustible) | Class B1 (flame-retardant, toxic fumes released at high temperatures) | Class A non-combustible | Class A non-combustible |
| Thermal Conductivity (W/(m·K)) | 0.036-0.048 | 0.030-0.040 (EPS); 0.028-0.032 (XPS) | 0.022-0.028 | 0.035-0.045 | 0.16-0.28 |
| Insulation Performance | Good | Excellent (XPS better than EPS) | Superior (best insulation effect) | Good | Average |
| Sound Insulation Performance | Excellent (fiber structure blocks air and solid sound transmission) | Average (low density, weak in blocking low-frequency noise) | Good (closed-cell structure, slightly better than polystyrene) | Good (fiber structure, mainly sound absorption) | Good (porous structure, moderate sound insulation) |
| Mechanical Strength | Compressive strength ≥40kPa, good toughness | EPS compressive strength ≥100kPa; XPS ≥200kPa | Compressive strength ≥200kPa, high hardness | Low compressive strength (≤30kPa), easy to break | Compressive strength ≥3.5MPa, high strength |
| Temperature Resistance Range | -268℃ to 650℃ (high-temperature resistant) | -50℃ to 70℃ (easy to deform at high temperatures) | -50℃ to 120℃ (easy to age beyond this range) | -120℃ to 400℃ | -50℃ to 600℃ (high-temperature resistant) |
| Weather Resistance | Moisture-resistant, anti-aging, adaptable to multiple climates | EPS absorbs water easily; XPS shrinks at high temperatures | Vulnerable to UV rays (needs protective layer), average water resistance | Poor water resistance (insulation drops when wet) | Moisture-resistant, good frost resistance |
| Environmental Friendliness | Made from natural rocks, formaldehyde-free, recyclable | Organic material, some contain flame retardants, hard to degrade | Contains isocyanates, emission control required during production | Glass fibers may irritate skin, average recyclability | Inorganic material, non-toxic, recyclable |
| Key Advantages | 1. Top-level fire resistance, high safety 2. Integrates insulation, soundproofing, and weather resistance 3. Adapts to harsh environments (high temperature, humidity, etc.) | 1. High insulation efficiency, low cost 2. Lightweight for construction, suitable for low-risk scenarios | 1. Optimal insulation performance, significant energy-saving effect 2. High strength, good integrity | 1. Excellent sound absorption, suitable for acoustic scenarios 2. Low cost | 1. Integrates load-bearing and insulation 2. Durable, same lifespan as buildings |
| Typical Applications | External wall insulation, fire barriers, industrial pipeline insulation | Internal building insulation, low-temperature storage, packaging cushioning | High-end building insulation, cold storage insulation, pipeline insulation | Concert halls, machine room soundproofing, ceiling filling | Wall masonry, self-insulating buildings |
