What is the best material to suppress sound? | ASLONG Guide
# What Is the Best Material to Suppress Sound?
Professionals in sound insulation seek materials that balance effectiveness, cost, and practicality. The best sound-suppressing materials depend on factors like density, Noise Reduction Coefficient (NRC), and application. Below, we break down top options with data-backed insights.
Key Properties of Effective Sound-Suppressing Materials
- Mass/Density: Heavier materials (e.g., MLV, drywall) block airborne noise better.
- NRC Rating: Measures absorption (0–1 scale); higher values reduce echoes (e.g., fiberglass: 0.95 NRC).
- STC Rating: Evaluates transmission loss (e.g., double drywall: STC 50+).
- Flexibility: Porous materials (acoustic foam) absorb mid/high frequencies, while dense layers block low frequencies.
Top Sound-Suppressing Materials Compared
1. Mass-Loaded Vinyl (MLV)
- Best for: Blocking airborne noise (walls, floors, ceilings).
- Pros: High density (1–2 lbs/sq ft), flexible, waterproof.
- Cons: Expensive, requires professional installation.
- STC Rating: Up to 27 per layer (source: *National Research Council Canada*).
2. Mineral Wool/Fiberglass
- Best for: Absorbing mid/high frequencies (stud cavities, HVAC).
- Pros: High NRC (0.95), fire-resistant, affordable.
- Cons: Irritates skin/lungs; requires protective gear.
3. Acoustic Foam
- Best for: Echo reduction (studios, offices).
- Pros: Lightweight, easy to install, budget-friendly.
- Cons: Poor low-frequency blocking (NRC ~0.70).
4. Green Glue Compound
- Best for: Damping vibrations between drywall/plywood.
- Pros: Converts sound energy into heat, STC boost up to 15 points.
- Cons: Must be sandwiched between rigid layers.
Expert Recommendations
- Walls/ceilings: MLV + drywall + Green Glue (STC 50+).
- Stud cavities: Mineral wool (NRC 0.95) + resilient channels.
- Studios: Acoustic foam + bass traps for balanced absorption.
For tailored solutions, consult ASLONG’s technical team. Data-driven choices ensure optimal noise control.
*Sources: National Research Council Canada, ASTM International, Acoustical Society of America.*

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FAQs
Does ASLONG provide after-sales service?
Yes, we provide a full range of after-sales services, including technical support, installation guidance, product maintenance and quality tracking, etc., to ensure that each project goes smoothly and continues to perform at its best.
Do ASLONG's products meet environmental protection standards?
Yes, all ASLONG products comply with ISO14001 environmental management system certification and global environmental protection standards. We use environmentally friendly materials and are committed to providing sustainable solutions to help customers achieve green development goals.
What specific functions can ASLONG's products provide?
Our products cover functions such as insulation, sound insulation, shock absorption, waterproofing and sealing, and are widely used in improving energy efficiency, reducing noise, controlling vibration, protecting equipment, etc., helping customers optimize engineering effects and improve user experience.
How to customize products that meet the needs of my industry?
You only need to contact our sales or technical team, we will conduct an in-depth analysis based on your industry needs and provide tailor-made products and solutions. We guarantee to provide you with efficient and accurate services to meet your personalized requirements.
What industries are the products provided by ASLONG suitable for?
ASLONG's products are suitable for multiple industries, including air conditioning and HVAC, construction and waterproofing, automobiles and transportation, home appliances and electronics, industrial equipment and machinery, etc. We provide customized solutions for each industry to meet different needs.

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