US-based glass manufacturer PPG Industries has resumed normal operations at its facility in Fresno, California, thereby removing force majeure for its customers in western US and western Canada.

Mechanical production issues at the flat glass manufacturing facility prompted the firm to impose force majeure on its architectural, residential and speciality glass products for its customers on 10 September.

Force majeure allows supply contractors to deviate from its obligations during unprecedented circumstances.

"Our planned investments at the Fresno facility will help to further enhance our production capabilities to meet our customers’ needs in the future."

PPG Industries stopped production at the Fresno plant on 30 August, and had been working to resolve the mechanical glitches. It has tried to keep up with customer demands by organising product supplies from other manufacturing facilities.

The firm is planning to invest $20m for upgrades at the facility from January 2016.

Modifications at the manufacturing unit will include reconstruction of a glass tank and upgrades to other equipment to meet the demand for PPG flat glass products in North American countries.

PPG flat glass vice-president Richard Beuke said: "We look forward to once again supplying our flat glass to meet customer demand in the western US and western Canada.

"As we look ahead, our planned investments at the Fresno facility will help to further enhance our production capabilities to meet our customers’ needs in the future."