05/27/2014 04:53 EDT | Updated 07/27/2014 05:59 EDT

Second fire in as many months at Calgary roof-tiling company

CALGARY - A fire at a roofing-tile company in Calgary's industrial southeast was under control Tuesday and a dozen workers who had been forced to leave a neighbouring business were allowed to return.

It was the second fire in as many months at IKO Industries.

Emergency crews put out hot spots and a hazardous materials unit was called out because of the chemicals involved in making the tiles.

However, firefighters said there were no issues with air quality.

Tuesday's fire in a large container used to store asphalt was smaller than one in March that heavily damaged part of the building.

Occupational Health and Safety investigators met with company officials after that blaze, which was determined to be accidental.

It's believed it was started by a contractor dismantling some equipment with a cutting torch.

(CTV Calgary)