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Fire Resistant Fiberglass Cloth Roll
Core Advantages
Product Specifications
| Fiber Composition | E-glass with intumescent coating |
| Weave Type | Plain, Twill, or 8-Harness Satin |
| Thickness Range | 0.40 – 2.50 mm (±0.05 mm) |
| Areal Weight | 250 – 1000 g/m² |
| Flame Spread Index (ASTM E84) | ≤ 25 (Class A) |
| Smoke Developed Index (ASTM E84) | ≤ 50 |
| Fire Endurance (1000°C flame) | ≥ 45 minutes |
| Continuous Operating Temperature | –60°C to +700°C |
| Roll Width | 850 mm, 1050 mm, 1250 mm |
| Roll Length | 20 m, 40 m, 80 m |
Application Fields
Handling & Installation Notes
Frequently Asked Questions
This cloth meets ASTM E84 (Class A) with flame spread index ≤ 25 and smoke developed index ≤ 50. It also complies with NFPA 701, ISO 6941, and BS 476 Part 7 for surface spread of flame. For marine applications, the cloth satisfies IMO FTP Code Parts 5 and 6. Third-party test certificates are available upon request.
When exposed to temperatures above 200°C, the intumescent coating undergoes thermal decomposition that releases a blowing agent, causing the coating to expand 3–5 times its thickness. This creates a microporous ceramic char layer that acts as a thermal barrier, reflecting up to 90% of radiant heat and reducing heat transfer by 400–500°C across the fabric thickness.
The cloth should not be washed or immersed in liquids as this may degrade the intumescent coating. For surface cleaning, use a dry cloth or vacuum with a soft brush attachment. If the cloth becomes contaminated with oils or chemicals that cannot be removed by dry brushing, replace the affected section rather than attempting wet cleaning.
Prolonged UV exposure may degrade the intumescent coating over time. For outdoor applications, we recommend applying a UV-resistant top coat or using the cloth behind protective panels. The cloth can be painted with fire-retardant coatings that include UV stabilizers. Internal testing shows 90% coating retention after 500 hours of accelerated UV weathering (QUV test).
For fire barrier applications, a minimum overlap of 150 mm is recommended between adjacent cloth panels. For critical fire-rated assemblies, the overlap should be 200 mm with staggered seams. All overlaps should be sealed with high-temperature fire-rated tape or intumescent caulk to prevent flame penetration through the joint.
The intumescent coating is water-resistant but not waterproof. Short-term condensation does not affect performance, but prolonged water contact may cause blistering or delamination. In high-humidity environments (>80% RH), ensure adequate ventilation. If the cloth becomes wet, allow it to dry completely at room temperature before use; the coating's performance will not be compromised by a single drying cycle.
