Silicone Coated Fiberglass Welding Blanket: Ultimate Heat Protection Solution

This guide explains how silicone coated fiberglass welding blankets protect against sparks, slag, and heat up to 2000°F. You'll learn their benefits, proper usage, and how they outperform regular welding blankets.

What Is a Silicone Coated Fiberglass Welding Blanket?

A silicone coated fiberglass welding blanket is a specialized protective cover made from woven fiberglass fabric with a silicone rubber coating. The silicone coating makes the blanket more durable, flexible, and resistant to extreme temperatures compared to uncoated versions.

These blankets typically withstand continuous temperatures up to 1000°F (538°C) and can handle brief exposures up to 2000°F (1093°C). The silicone coating prevents fiberglass strands from breaking loose while adding water and chemical resistance.

Key Benefits for Welders and Metalworkers

When you use a silicone coated fiberglass welding blanket, you get several advantages:

• Superior heat resistance:Protects nearby surfaces from welding sparks better than standard blankets
• Longer lifespan:Silicone coating prevents fiberglass degradation from UV exposure and repeated folding
• Easy cleanup:Molten metal and slag don't stick to the silicone surface
• Flexibility:Remains pliable in cold temperatures when uncoated blankets become stiff
• Non-conductive:Won't create electrical hazards in your workspace

Proper Usage Tips

To get maximum protection from your silicone coated fiberglass welding blanket:

1. Always overlap multiple blankets by at least 6 inches when covering large areas
2. Secure edges with non-flammable weights or clamps to prevent lifting
3. Inspect for damage before each use - replace if coating is cracked or fiberglass shows through
4. Store folded or rolled in a dry location away from direct sunlight
5. Clean with compressed air or a soft brush - avoid harsh chemicals that could degrade silicone

Comparing to Other Welding Blanket Types

While uncoated fiberglass blankets cost less initially, silicone coated versions provide better long-term value:

Common Applications Beyond Welding

While designed for welding, these versatile blankets also work well for:

• Foundry work and metal casting protection
• Fireplace and wood stove heat shields
• Automotive exhaust system repairs
• Industrial furnace maintenance




• Hot work permits in construction

Safety Considerations

Though highly protective, remember:

• Never use as personal protective equipment (PPE) - always wear proper welding gear
• Avoid contact with sharp edges that could cut through the material
• Keep away from open flames as silicone can eventually burn at extreme temperatures
• Allow to cool completely before handling or storing

Choosing the Right Size and Thickness

Select your silicone coated fiberglass welding blanket based on:

• Work area size:Common sizes range from 3'x3' to 10'x10'
• Heat intensity:Thicker blankets (1/8"+) for prolonged high-heat applications
• Mobility needs:Lighter weights for frequent repositioning

For most welding shops, a medium-weight 6'x6' blanket provides the best balance of coverage and maneuverability.

Maintenance for Longevity

Proper care extends your blanket's useful life:

• Shake out debris after each use
• Spot clean with mild soap and water if needed
• Store flat or loosely rolled to prevent creasing
• Rotate between multiple blankets if used daily

With proper care, a quality silicone coated fiberglass welding blanket will protect your workspace for years of heavy use.