WHITE SPARK - SILICA CLOTH

More Info on Welding Blankets from Steel Guard Safety

Frequently Asked Questions — Silica Welding Blankets

What is the difference between silica and fiberglass welding blankets?

Silica cloth is made from high-purity silicon dioxide fibers and has a significantly higher continuous service temperature than standard fiberglass. Fiberglass welding blankets are suitable for light to medium spark applications. Silica welding blankets handle sustained higher temperatures, heavier spark exposure, furnace work, and heat treating and stress relief operations up to 1800°F. If your application involves continuous high-heat exposure rather than occasional spark containment, silica is the appropriate material choice.

What weights are available and when should I choose 36 oz over 18 oz?

Both 18 oz and 36 oz are available in stock sizes. The 18 oz is suitable for standard high-heat welding and light furnace work. The 36 oz provides greater thermal mass and more robust protection for heavy spark exposure, sustained high-temperature environments, and applications where the blanket will be in continuous contact with hot surfaces or equipment.

What are silica welding blankets used for?

Primary applications include furnace blankets, heat treating and stress relief operations, pipe welding where post-weld heat treatment is required, heavy spark welding environments, and any situation where continuous service temperatures exceed what fiberglass handles reliably. These blankets can be used vertically as curtains or laid flat horizontally as surface protection.

Do these blankets come with grommets?

No grommets are punched as standard. If you need grommets for hanging or curtain applications, call for a special order with grommet placement specified.

What sizes are available?

Stock sizes are 4'x6' and 6'x6' in both 18 oz and 36 oz weights. Custom sizes are available — call for pricing and lead time on non-standard dimensions.

How is the blanket constructed?

Sewn and hemmed with high-heat fiberglass thread for durability at sustained welding and furnace temperatures. The White Spark silica cloth maintains its integrity at temperatures where standard fiberglass would degrade.

How does silica compare to carbon fiber felt for high-heat applications?

Both silica and carbon fiber felt are rated for high-temperature applications up to 1800°F. Carbon fiber felt (PANOX) is softer, more flexible, and fiberglass-free — better for applications where the blanket needs to be handled frequently or wrapped around equipment. Silica cloth is stiffer and more appropriate for flat surface protection, furnace applications, and environments with heavy spark and slag. See our Carbon Fiber Felt Welding Blankets for comparison.

What other welding blanket options do you carry?

We carry heat cleaned fiberglass, carbon fiber felt, acrylic coated fiberglass, silicone coated fiberglass, and aluminized fiberglass welding blankets. Browse the full Welding Blankets & Rolls collection to compare all material options.

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