What is the required moisture content for seasoned rubber wood?

The maximum average moisture content is 12% for Zone I and 14% for Zone II, as defined in IS 287 (Clause 4.1).

Is rubber wood suitable for outdoor applications?

No, this standard covers timber for interior use only (e.g., furniture, panelling). It is not durable enough for exterior exposure.

What type of preservative treatment is specified?

The timber must be treated, preferably by a pressure process, with preservatives like Copper-Chrome-Arsenic (CCA) or Boron compounds to specified retention levels (Clause 4.2).

What are the common uses of timber conforming to IS 14960?

It is intended for furniture, cabinets, joinery, partitions, panelling, and toys.

IS 14960

: 2001

Preservative-treated and seasoned sawn timber from rubber wood (Hevea Brasiliensis)

CurrentSpecializedSpecificationMaterials Science · Timber and Timber Stores

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This standard specifies the requirements for preservative-treated and seasoned sawn timber from rubber wood (Hevea Brasiliensis). It covers material requirements, moisture content, preservative treatment, permissible defects, dimensions, and marking for its use in interior applications like furniture, joinery, and panelling.

Preservative-treated and seasoned sawn timber from rubber wood (Hevea Brasiliensis)

Quick Reference Values

Average moisture content for Seasoned Zone I12 percent, max

Average moisture content for Seasoned Zone II14 percent, max

Minimum net dry salt retention of CCA preservative (Interior use)4.0 kg/m³

Minimum net dry salt retention of Boric Acid (Interior use)4.0 kg/m³

Permissible bow in any 2 m length12 mm

Permissible cup in 150 mm width3 mm

Practical Notes

Rubber wood is highly susceptible to fungal and insect attack and must be treated immediately after felling and sawing.

Due to its light colour, uniform grain, and excellent workability, it is a popular alternative to other hardwoods for furniture, but it is not suitable for structural or exterior use.

Always check for the ISI Mark to ensure the timber has been properly seasoned and treated according to the standard.