Hi Mike;

I've used a kerosene heater for perhaps 20 years to take the nip out of my garage/workshop. As long as the area you are heating is fairly well ventillated, CO poisoning is not much of a concern. At 200ppm CO, for example, 2-3 hours exposure will produce a mild headache and dizziness - I've never experienced any symptoms whatsoever after a whole day of heating and working in my garage.

The way I do it is as follows: When I first get up, I start the heater on high, and let it warm the garage while I shower, have breakfast, etc. When I'm ready to start work, I open the overhead garage door briefly and get a change of air in the shop. I turn the heater down and leave the garage door open a crack - - Checking that some fresh air is indeed drifting in. If it's still outside, I'll put my standing fan on low and point it at the crack. In Florida, really cold days are only 30-40F, I don't know how well it would keep things warm if outside air is zero F . . .

The bigger concern in a ventillated area is probably fire - The "later" model heaters (last 25 years or so) have tipover safeties that slam a spring loaded cover over the firebox to snuff the flames immediately if the unit is tipped over. I live in Sarasota where 1000's of kerosene heaters are used every winter, and I can't recall ever reading about a fatality because of one. That is not to say one shouldn't approach the use of a heater cautiously and exercise good sense, however.

As to adverse effects on epoxy, I've not seen any. Since epoxy is 100% solids and includes no volatiles whatsoever, there is no problem with epoxy resin and open flames either.

Hope this helps, Spidey