Temperlite Insulation Sdn Bhd , formerly known as ITW Insulation Systems Malaysia Sdn Bhd, was incorporated on 23rd October 1991.Temperlite principal activities are manufacturing and selling of expanded perlite powder (cryogenic and construction grade ) and perlite sectionals ( pipe covers and slabs).

The company’s factory is located at Sepang, Selangor, Malaysia and is placed within one acre of land with a covered land area of approximately 18,000 sq. ft. The company also owns the adjacent one acre plot of land which will be used for future expansion.

The company commenced production of perlite powder and perlite sectionals in June 1995 and currently has production capacity of approximately 4,600 m³ (200 tons) of perlite powder (cryogenic grade) and approximately 750 m³ (150 tons) of perlite sectionals per month.

In April 2007, Temperlite was acquired by Illinois Tool Works Inc (ITW), a US Fortune 200 company listed on the NYSE. ITW is a diversified manufacturer that consists over 800 business units throughout the world. Due to change in the company’s strategy, ITW divested 100% of its shares in Temperlite in early 2015.

Temperlite is a member of the Perlite Institute, Inc., which is an international association of perlite miners and processors, founded in 1949 and having its headquarter in Pennsylvania, USA .The products that Temperlite manufactures conform to the Perlite Institute’s standards and the relevant ASTM standards.


Perlite is naturally occurring siliceous volcanic rock containing a small amount of combined water. The unique feature about perlite is that when heated to a suitable point in its softening range, it expands to approximately 20 times its original volume.