Phenolic Foam Board – Grade A Non-combustible Insulation for HVAC, Building Fire Barrier & Cold Storage
1.Product Overview
Phenolic foam is rigid closed-cell thermosetting foam produced from phenolic resin raw materials. It gains Grade A non-combustible certification complying with GB 8624 fire test standards. Boasting outstanding fire resistance, low thermal conductivity, broad working temperature tolerance plus waterproof and anti-ageing traits, this insulation material gets widely deployed on building enclosure walls, fire separation strips, air duct lining, cold storage facilities and cleanroom thermal insulation for high-standard construction projects.
2. Product Types & Specifications
We develop multiple finished variants matching distinct site conditions: bare plain board, single or double-sided aluminum foil faced phenolic panel, color steel composite phenolic board and fiberglass cloth covered phenolic board.Standard Thickness: 15/20/25/30/40/50mm, bespoke thickness ranging from 20mm to 100mm on requestStandard Dimension: 1200×3000mm, 1000×2000mm, factory custom cutting and irregular sizing are acceptable.
3. Core Product Features
Grade A Non-combustible & Fully Compliant with Fire Codes
Rated Grade A non-combustible under GB 8624 test requirements. When exposed to open flame, the panel only carbonizes without sustained burning, molten drop formation, dense smoke or toxic gas release and stops flame spread effectively. It serves as a safe alternative to flammable EPS, XPS and PU insulation in fire-critical construction works.
Ultra-low Thermal Conductivity to Cut Long-term Energy Loss
Thermal conductivity stays below 0.030 W/(m·K) @ 25℃. Compact closed-cell composition delivers reliable thermal blocking, cutting down cold and heat leakage to maintain consistent energy-saving outcomes all year round.
Wide Temperature Adaptability for Diverse Working Scenarios
Sustains stable long-term service between -196℃ and +200℃. No thermal shrinkage under high heat or cracking under ultra-low ambient temperature, fitting both deep-freeze cold preservation and medium high-temperature insulation layouts.
Closed-cell Hydrophobic Build Prevents Moisture & Condensation
Closed-cell proportion hits above 90%, water repellent rate ≥98% with volumetric water absorption controlled within 3%. Such physical property blocks damp intrusion and mildew growth, avoiding recurring condensation on air ducts and wall surfaces in humid surroundings.
High Dimensional Stability Against Deformation
Thermosetting molecular structure delivers solid structural stability. Its dimensional variation remains under 1% after 48-hour ageing at 70℃, resisting wrap, crack and layered separation amid frequent temperature shifts to secure lasting insulation efficiency.
Zero Formaldehyde Eco Formula with Extended Service Life
Free of formaldehyde and fluorocarbon additives without volatile hazardous substance emission, safe enough for indoor and cleanroom installation. Good anti-ageing and anti-corrosion capability enables over 20 years of service under normal operating environments.
Porous Structure Delivers Effective Noise Absorption
Intrinsic microporous layout reaches NRC ≥0.7 measured per ASTM C423, absorbing ventilation airflow noise and mechanical vibration to realize auxiliary sound reduction for buildings and equipment rooms.
4. Technical Parameters
Base Material: Closed-cell rigid phenolic thermoset foam
Fire Performance: GB 8624 Grade A Non-combustible, low smoke and non-toxic
Thermal Conductivity: ≤0.030 W/(m·K) @ 25℃Continuous Operating Temperature: -196℃～+200℃Closed-cell Ratio: ≥90% (tested per GB/T 10799)
Water Repellency Rate: ≥98%Volumetric Water Absorption: ≤3%Dimensional Change Rate: ≤1% after 70℃, 48h treatment
Environmental Property: Formaldehyde-free, fluorine-free, no harmful volatile compounds
Standard Thickness: 15/20/25/30/40/50mm | Custom range:20~100mmStandard Sheet Size:1200×3000mm, 1000×2000mm, custom cutting available
Implemented Test Standards: GB 8624(fire rating), GB/T 10294(thermal conductivity), GB/T 10799(closed-cell rate), ASTM C423(sound absorption coefficient)
5. Selection Guide
This thermoset phenolic insulation stands out with Grade A fireproof capacity, dependable waterproof property and wide temperature compatibility. It beats EPS and PU on fire safety while outperforming Rock Wool Blanket with dust-free installation and better heat retention.Not recommended for steady operation beyond +200℃, the material fits most HVAC ducting and building fireproof insulation works perfectly.
6. Main Application Scenarios
Building Wall & Roof Insulation: Energy-saving thermal cladding for inner and external wall plus roof structures of civil and commercial buildings.
Construction Fire Separation Works: Premium fire blocking material for building fire belts, vertical shaft and staircase fire containment sections.
Central Air Conditioning Duct Insulation: Purpose-built panel for ventilation and purification air ducts to stop condensation and cut running noise.
Industrial Workshop Insulation: Thermal preservation for machine room, cold storage and production plant wall & roof systems.
Fire-resistant Sandwich Core Material: Flame retardant core filler for color steel sandwich panel and fireproof door fabrication.
7. Installation Guidelines
Base Surface Preparation: Keep substrate flat, dry and clean of floating dust to achieve full panel adhesion.
On-site Cutting Process: Workers may freely cut or groove boards to match irregular construction surfaces.
Bonding & Fixation: Fasten panels with matched special adhesive and fully seal all seams to eliminate thermal bridging.
On-site Safety Tips: Class A incombustible product brings no open-fire risk during whole construction period.
8. Packaging & Purchasing Information
Packaging: PE protective film wrapped plus standard export carton packing, moisture-proof and impact resistant for long-distance land and maritime transportation.Stock & Customization: Regular specifications kept in warehouse for fast bulk delivery. Custom B1 flame-retardant grade, non-standard pipe diameters and wall thicknesses are available for various engineering projects.Lead Time: 3~5 working days for stocked items; 15~20 working days for customized orders, negotiable according to order quantity.MOQ & Sample Policy: Minimum order set as one pallet, small trial purchase acceptable; free sample supply upon client request, various facings including aluminum foil, color steel and fiberglass are customizable.
Certification Service: We supply GB 8624 Grade A, EN 13501-1 Class A fire test reports and formaldehyde-free qualification documents to support global project inspection approval.Value-added Service: Full set of product inspection papers plus complimentary on-site construction technical consulting.Product Warranty: Fireproof, thermal and waterproof performance stays stable under standardized installation and normal service conditions.
9.FAQ
Q1: What fire grade can phenolic foam reach?
A1: It passes GB 8624 Grade A non-combustible test with low smoke, non-toxic and no molten drop features, greatly raising project fire acceptance passing rate.
Q2: What is its usable temperature range?
A2: Stable continuous use spans -196℃ to +200℃; avoid long-term application above +200℃.
Q3: Does phenolic board soak water or grow mildew under humid surroundings?
A3: Its closed-cell hydrophobic structure restricts water intake and mildew development to retain steady insulation performance.
Q4: Advantages over PU and polystyrene boards?
A4: Phenolic gains prominent edge on fire safety with Grade A rating. PU holds marginally lower thermal conductivity around 0.022-0.028 W/(m·K), hence phenolic becomes priority pick for high fire-risk projects.
Q5: Are non-standard pipe diameters and special thicknesses customizable?
A5: Full non-standard size customization is supported. On-site flexible cutting can adapt to various special-shaped pipeline installation requirements for different engineering scenarios.
Q6: Difference between phenolic board and rock wool board?
A6: Phenolic has lower thermal conductivity, complete waterproof capacity and dust-free construction. Rock wool tolerates over 600℃ high temperature and suits ultra-high heat industrial pipeline insulation.
10. Product Summary
Formaldehyde-free ,Grade A non-combustible phenolic rigid foam belongs to premium thermosetting insulation material. With reliable low-temperature frost resistance, optional B1/B2 flame retardancy and convenient on-site installation, it is widely applied in cold storage, central air conditioning and industrial pipeline insulation fields. It serves as a high-cost-performance, stable and trustworthy energy-saving insulation solution for modern industrial and civil engineering projects.
