South Wales Fire and Rescue Service say the location of the fire is different from the blaze at the SiteServ Recycling Centre earlier this month.
86 firefighters are currently on site dealing with the fire and preventing any spread to the surrounding properties.
As a precaution, we ask the public and local businesses to be vigilant, as we move the necessary resources we require, around the site and utilise the water supplies we need.
It has been confirmed that there is no asbestos within the building but we also ask that people keep their windows and doors closed.
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It will become drier in the early hours setting us up for a fine start to Wednesday
Showers in the north will spread southeastwards overnight. Temperatures will be higher so not as chilly as list night.
Chilly start to Tuesday, turning into a largely fine and dry day.