Watch: Smoke billows from major scrap metal yard blaze in Lower Hutt, significant delays expected

Four fire trucks and several specialist units battled a blaze at a scrap metal yard in Lower Hutt suburb of Petone that caused a road closure.

The fire at the scrap yard has caused a street to be closed and nearby businesses to be evacuated in Lower Hutt. Source: 1 NEWS

More than 60 trucks were at the scene when a fire started before 6.45am in a machine cutting fridges before spreading to insulation materials, a Fire and Emergency spokesperson told 1 NEWS.

Parkside Road has been closed with the blaze also causing nearby businesses to be evacuated as a precaution.

Police are warning motorists to avoid Seaview Road with significant delays in the area.

One employee suffered minor smoke inhalation but did not require hospital treatment.

There is a possibility crews may be at the scene overnight.

Over 60 firefighters are battling the Petone blaze which started in a machine cutting fridges. Source: 1 NEWS