Industrial Insulation & Noise Control Q&A Center
To ensure the correct selection of materials and installation services, Centrotec has compiled frequently asked questions (FAQs) from engineers and factory operators, featuring answers from our team of experts.
Rockwool Sound Absorption & Thermal Insulation
Q: How does Rockwool insulation differ from standard fiberglass insulation?
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A: Rockwool (stone wool) is manufactured from natural volcanic rock. Its main advantage is high thermal resistance, withstanding temperatures over 1,000°C, and it is non-combustible, whereas fiberglass has a much lower temperature threshold. Additionally, Rockwool has a significantly higher density, making it noticeably more effective for sound absorption and preventing noise transmission in industrial factories.
Q: What density of Rockwool should be selected for soundproofing and thermal insulation applications?
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A: For general thermal insulation, a density of 40-60 $kg/m^3$ is sufficient. However, for applications requiring soundproofing or for use in highly noisy machinery rooms, a density of 80-100 $kg/m^3$ or higher is recommended. This ensures the stone wool structure can trap and dissipate acoustic wave energy with maximum efficiency.
Hot/Cold Insulation Cladding & Removable Jackets
Q: What are the benefits of insulation cladding, and what materials are available?
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A: Cladding involves wrapping and sealing the inner insulation layer with metal sheeting to protect it from environmental factors such as rainwater, moisture, UV radiation, and mechanical impacts. This extends the service life of both the insulation and the piping system. Centrotec offers materials tailored to your site requirements, including aluminium for general applications and stainless steel for areas requiring high resistance to chemicals or severe corrosion.
Q: Why should we choose a Removable Insulation Jacket?
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A: At points that require frequent maintenance, inspection, or access—such as valves, pumps, flanges, or specialized machinery—using permanent cladding makes removal difficult and causes damage. Choosing a Removable Insulation Jacket (custom-fabricated insulation mattress) allows technicians to easily remove and reinstall the unit without needing to redo the insulation. This saves time, reduces costs, and maintains excellent energy-saving efficiency.
Soundproof Insulation Installation for Generator and Machine Rooms
Q: What must be specially considered when implementing a soundproof system in generator and machine rooms?
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A: The most critical factor is "balancing soundproofing with ventilation." Since machinery and power generators continuously release high heat, installing soundproofing insulation on walls and ceilings (such as using a Rockwool system with perforated sheets) must be done in tandem with designing sound attenuators (silencers) at the air intake and exhaust vents. This ensures proper airflow while preventing noise from leaking outside.
Q: Approximately how many decibels (dB) can be reduced after installing Centrotec's soundproof insulation?
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A: Noise reduction efficiency depends on the existing structure and the type of machinery. However, generally, installing a standard Centrotec soundproof system (stud walls + high-density Rockwool + acoustic panels) can achieve a noise reduction of 20-40 dB(A). This helps bring the average noise level around the machine room well within the safety thresholds mandated by law.
Wire Mesh for Thermal Insulation Installation in Factories and Warehouses
Q: Why is wire mesh necessary when installing insulation under factory or warehouse roofs?
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A: Wire mesh serves as a supporting and tensioning structure to hold the insulation rolls (such as SCG insulation or Rockwool blankets) in place, preventing them from sagging from the underside of the roof over time. This maintains the essential air gap and preserves the thermal insulation properties over the long term. It also acts as a barrier against pests, such as birds or rodents, preventing them from destroying the insulation.
Q: What type of wire mesh should be chosen for the best durability and long-term cost-effectiveness?
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A: We highly recommend using Hot-Dipped Galvanized Wire Mesh. It offers excellent resistance to rust and moisture accumulation beneath the roof. It also provides superior toughness and strength compared to standard zinc-plated wires, ensuring your factory or warehouse roof structure remains secure without the need for frequent replacements or repairs.