UPDATED: TRAFFIC on Maitland Road at Hexham is heavy following a fire at a caravan business earlier this morning.
The fire reportedly damaged half the workshop and several caravans but firefighters were able to contain the blaze and prevent its spread to other properties.
Aerial firefighting crews are continuing to douse the large building, which housed the showroom and spare parts section of the business.
Hazardous materials firefighters also remain at the scene and are expected to remain for most of the day.
Police have cordoned off a backstreet used as an access road to several other large businesses as smoke continues to emanate from the structure.
Emergency services are still at the scene working to cool on-site gas cylinders.
Live Traffic NSW advises motorists in the area to expect delays and exercise caution.
More to come