Firefighters say they are tackling 2000 tonnes of building waste.
But the operation is being hampered because of 30 to 40 gas cylinders, nearby, of 'varying content'
They say these have to be kept cool to 'avoid the risk of explosion and danger to firefighters'.
More equipment's being drafted in to tackle a large fire at a recycling centre on the outskirts of Cardiff.
The alert was sounded at around 1:30 this morning. Around 60 firefighters are at the scene.
The fire involves several industrial units, vehicles, and large quantities of refuse. A high volume pump has been called to use water from nearby reens and ponds.
South Wales Police:
'At 0155 hours on Friday 28th March 2014 Police and South Wales Fire and Rescue Service attended a report of a fire at the Atlantic Waste Management site, Rumney, Cardiff.'
'The fire currently extends over a five acre site and a two hundred metre exclusion zone has been implemented due to the presence of gas canisters within the site. Newton Road is currently closed. The cause of the fire has not yet been established.'
Around 60 firefighters are tackling a blaze at a recycling centre on the outskirts of Cardiff.
They were called out at around 1:30 this morning to a recycling firm on Newton Road, Rumney. The fire involves several industrial units and large quantities of refuse.
It's being described as a "protracted incident"
Firefighters are tackling a fire at a house in Llandysul, Ceredigion.
Mid and West Fire and Rescue Service were called to the property in Maes y Meillion at around 9.00am this morning.
Crews from Llandysul and Newquay are attending the fire.
The cause is not yet known, and there are not thought to be any injuries.
Firefighters are tackling a blaze at Ysgol Ein Harglwyddes in Bangor. The fire is in a detached classroom building.
North Wales Fire and Rescue Service were alerted to the incident at the school on Ffordd Caernarfon at just before 7.30 pm this evening.
Fire engines from Bangor and Menai Bridge are currently at the scene and are tackling the blaze which is believed to have spread to the roof.
At this time it is unclear as to how the fire began and an investigation into its cause will be undertaken.
An investigation continues into a fire at Penarth Leisure Centre in the Vale of Glamorgan.
Around 30 firefighters were called to the facility in Cogan.
There are no reports of injuries and fire investigation officers are returning to the scene at 10.00am.