What is the primary use of IS 3093 bitumen felts?

They are primarily used for thermal insulation in roofs, cold storages, and industrial structures.

How should the bitumen felt rolls be stored on site?

They must be stored vertically in a cool, dry place and protected from direct sunlight.

Is this felt suitable for waterproofing?

While it has moisture resistance, it is specifically designed for thermal insulation; IS 1322 is typically used for waterproofing felts.

IS 3093

: 1987

Bitumen based felts for thermal insulation

CurrentSpecializedSpecificationMaterials Science · Insulation Materials

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This standard specifies the requirements, manufacturing process, and test methods for bitumen-based felts used for thermal insulation in buildings and structures. It ensures the material provides adequate thermal resistance, durability, and protection against moisture.

Specifies requirements for bitumen-based felts used for thermal insulation.

Quick Reference Values

Nominal width of rolls1 m

Storage orientationVertical

Practical Notes

Rolls must be stored vertically to prevent distortion.

Ensure the application surface is clean, dry, and properly primed before laying the felt.

Overlaps should be properly sealed with hot bitumen to prevent thermal bridging and moisture ingress.