Fire fighters from across the region were called to a business park near Towcester after a building containing flammable materials caught fire last weekend.
Just after 5am on Saturday, September 29, fire crews from Towcester and Buckingham were joined by crews from Northampton and Daventry, following the fire at the Pury Hill Business Park, just off the A5 on the road to Alderton
There are no reports of any injuries.
A Spokesman for the fire service said a storage unit measuring around 60m by 10m, which contained paint and paint thinners, was severely damaged in the blaze.
Crews also had to deal with an asbestos roof, and an adjacent building was damaged by smoke.
The cause of the fire is currently under investigation.