Toolman
I don't mean to pick on you, BUT my paint storage used to look a lot like yours. It was a nice old WOODEN storage cabinet that had been in our barn for ages. I used it to store rattlecans, laquer thinner, acetone, old and new paint, reducers, a real "witches brew" of flammable liquids. The cabinet was located in the corner of my shop, just to the right of the small window to the right of the picture below.
One day I was in the house and heard a loud "pop" and when I looked out the window, flames were shooting out of the small window located near the paint storage area. When all was said and done, this is what I had left:
In the opinion of the State Fire Marshall, some type of "spontaneous combustion" took place in the paint storage cabinet that caused the fire. There was no other source of ignition near the area where the fire started. Consequently, this is what I now use for combustable storage in my new shop
Yes, these cabinets are expensive and maybe overkill, but at least I feel a lot safer now.
What I learned thru all of this, DO NOT store paints and combustables in WOODEN cabinets. Cellulose (wood) is one of the prime ingredients necessary for spontaneous combustion to occur and it CAN OCCUR!! We will never know what happened in my shop but apparently two paints, chemicals, whatever leaked and combined with the wooden shelves, created the "perfect storm" and ignited!!
END OF SERMON!!!
Good Night
Steve