Johns Manville® Premium Fiberglass Insulation Solutions
Johns Manville® Fiberglass Blankets — Premium High-Performance Insulation
At Specialty Gaskets Inc., we supply and fabricate a wide range of Johns Manville® (JM) fiberglass blankets, engineered for superior thermal insulation, acoustical control, fire resistance, and durability. As trusted materials in industrial, OEM, HVAC, appliance, and construction markets around the globe, JM fiberglass blankets offer dependable performance for your most demanding projects
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What Makes JM Fiberglass Blankets Exceptional?
JM fiberglass insulation is manufactured from long, resilient glass fibers bonded with a thermosetting resin, resulting in a material that is:
- Thermally Efficient: Provides effective resistance to heat transfer, reducing energy loss.
- Fire and Smoke Resistant: Products are noncombustible with low flame spread and smoke development ratings in many applications.
- Formaldehyde-Free: Many JM products are formaldehyde-free, helping support safer indoor environments.
- Moisture & Corrosion Resistant: Does not rot, mildew, or accelerate corrosion of adjacent materials.
- Acoustically Effective: Helps reduce sound transmission in walls, ceilings, floors, and enclosures.
These inherent properties make JM fiberglass blankets a versatile choice when you need insulation that performs, lasts, and installs easily.
Applications That Benefit from JM Fiberglass Blankets
JM fiberglass insulation blankets are used where thermal control, fire safety, and acoustical performance are essential:
- Equipment insulation and heat shields
- HVAC duct and enclosure insulation
- Appliance thermal barriers
- Enclosures and partitions with acoustical control
- OEM manufacturing and retrofit projects
Whether you need thermal protection or sound attenuation, these fiberglass products deliver reliable performance when properly installed and specified.
Technical Highlights & Specifications
Below are representative performance characteristics common to JM fiberglass blankets — for precise values, always check product datasheets or contact our team:
Typical Properties
Thermal Resistance (R-Value): Helps control heat flow; improves energy efficiency.
Fire Resistance: Noncombustible per CAN/ULC standards; low flame spread.
Moisture & Corrosion Resistance: Glass fibers resist rotting, mildew, and corrosion.
Acoustical Control: Reduces sound transmission through walls and assemblies.
Bonded Construction: Fibers maintain integrity during fabrication and installation.
Need exact data? Contact us for product-specific datasheets, thermal charts, and application guidance.
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Why SGI Supplies JM Fiberglass Blankets?
As a Canadian supplier and fabricator, Specialty Gaskets Inc. understands the needs of North American industries — from HVAC and industrial insulation to OEM parts fabrication and appliance applications. Our team brings:
In-house cutting and fabrication capability for customized blanket shapes, thicknesses, and assemblies
Large inventory with fast shipping
Technical knowledge to recommend the right JM fiberglass solution for your thermal and acoustical needs
Seamless integration with insulation and gasketing solutions to support full system builds
Browse our JM fiberglass blanket options to find the right material for your project.
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Frequently Asked Questions
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Their combination of thermal efficiency, fire resistance, moisture stability, and acoustical properties makes them suitable for industrial, HVAC, appliance, and enclosure applications.
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Many JM products, including those we supply, are formaldehyde-free and certified for reduced VOC emissions.
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Yes—at SGI we can cut and fabricate blankets to specific widths, lengths, and shapes to fit your assemblies.
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Fiberglass blankets often provide a favorable balance of thermal performance, fire resistance, and cost compared to rigid boards or sprayed insulation.
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Yes — many JM fiberglass blankets are designed for thermal insulation in systems exposed to heat (typically up to ~350°F / ~177°C for some products). Always check individual product datasheets for exact limits.
