I laid down my epoxy floor this weekend (I didn't level the low spot in the concrete, too much work for little value). Since it was getting on the low side of the curing temperature range (upper 30s at night) we set up my father's kerosine heater to keep the temp up. Unfortunately, we left it too close to the floor.
Our best guess is that the heater spits soot when it fires up (works off a thermostat) the soot sat on top of the epoxy and retarded the curing process (it was still sticky in that area after 15 hours). When we squeegeed out the clear the soot mixed into it and created the rectangular shape.
I'm going to roll with it but it would have been preferable to find a different spot for the heater, even if that required kicking my 'vert out in the rain.
Our best guess is that the heater spits soot when it fires up (works off a thermostat) the soot sat on top of the epoxy and retarded the curing process (it was still sticky in that area after 15 hours). When we squeegeed out the clear the soot mixed into it and created the rectangular shape.
I'm going to roll with it but it would have been preferable to find a different spot for the heater, even if that required kicking my 'vert out in the rain.
