Frequently Asked Questions — Heat Cleaned Fiberglass Welding Blankets

What does "heat cleaned" mean for fiberglass welding blankets?

Heat cleaning is a manufacturing process that removes the organic binders, lubricants, and sizing agents from the fiberglass during production by exposing it to high temperatures. The result is a cleaner, purer fiberglass material that does not produce smoke or off-gas organic compounds when exposed to heat — making heat cleaned fiberglass welding blankets the correct choice for food processing, pharmaceutical environments, cleanrooms, and any application where organic contamination is a concern.

What is the difference between heat cleaned fiberglass and standard fiberglass welding blankets?

Standard fiberglass welding blankets retain the organic binders and lubricants used during manufacturing. When exposed to welding heat, these can produce smoke and odor. Heat cleaned blankets have those compounds removed, producing a cleaner burn profile. For applications where smoke or contamination are not concerns, standard uncoated fiberglass is equally effective and typically more economical.

What weight is this blanket?

18 oz per square yard — a medium-weight fiberglass suitable for general welding with light to medium sparks. For heavier spatter, slag, and higher temperature applications, consider our Carbon Fiber Felt Welding Blankets rated to 1800°F or our heavier fiberglass options.

Can this blanket be used vertically as a curtain?

Yes. The grommets punched on 2' centers on all four sides allow these blankets to be hung vertically as welding curtains or draped horizontally as surface protection. This dual-use flexibility makes them practical for facilities where both curtain and blanket protection is needed.

What sizes are available?

Stock sizes are 4'x6', 6'x6', and 6'x8'. 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 welding temperatures. #2 grommets are punched at 2' centers on all four sides for flexible hanging and positioning.

What other welding blanket options do you carry?

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

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