Saint Gobain Isover is more than trebling its capacity to produce insulation materials in Russia, where it is already the leading producer.  This will take the form of an extension of the glasswool production facilities at its Yegorievsk plant near Moscow.  That plant originally went into production during 2003 and has been running at capacity ever since.  The new production line should come on stream during the summer of next year and will be supplying both the Russian and neighbouring markets.