Re: soggy epoxy & unvented heaters

It sounded like from the story that part of the bach set up and part didn't if that is the case it was maybe was not mixed enough. As far as unvented propain heater the biggest problem is moisture being it is wet heat. Blushing epoxies do not like humidity very much. I have never had a problem with nonblushing epoxy from Aromarine. On another note Karosen unvented leaves a oil deposet on wood and epoxy.

Jon

Now that I know that unvented heaters can mess up epoxy, I'm more leery of them than ever - thanks for the tip Mason.

I knew that the increased carbon dioxide level from unvented, fuel-burning heaters of any kind causes the surface of curing concrete to be permanently chalky instead of hard, and the solutions for this problem are really expensive.

Probably the increased levels of carbon dioxide, water vapor, and unburned hydrocarbons from unvented heaters can mess up all kinds of chemical reactions exposed to the open air in an enclosed space with the unvented heater.

I'm wondering what other kinds of curing paints/coatings/adhesives/caulking unvented heaters might mess up too. I think I'd rather invest in other kinds of heating than find out. Then of course, unvented heaters aren't good for your own health either.

I've even seen vented portable heaters, which of course cost more, but at least the combustion products go outside, and they don't have to be a permanent installation.

Sincerely,

Roger

----- Original Message -----
From: mason smith
To: bolger@yahoogroups.com
Sent: Saturday, July 18, 2009 6:17 AM
Subject: Re: [bolger] Re: soggy epoxy
...
Couple other things. I learned from experience also that you do not want to heat your shop with an unvented kerosene heater when coating anything with epoxy. That won't cure either. Kern Hendricks explained to me why, chemically.
...
Mason