Heating ideas for cold weather fiberglassing within enclosed shop area

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Forum topic by Chris posted 11-05-2012 06:47 PM 1168 views 0 times favorited 2 replies Add to Favorites Watch
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364 posts in 4326 days

11-05-2012 06:47 PM

I am working on a custom project that involves extensive fiberglass work. Of course the weather has dropped well below the optimal working conditions for Isophthalic Polyester Resins. There is ‘no’ awaiting spring to return to complete this project, it is already behind schedule as it is. I am needing to heat the workable space and the project itself with some form of heating that is ok to use in a combustible vapor environment. I know that already limits many of the well known heat sources out there.

I plan on heating the project itself along select regions of the project with directed infrared bulbs. I also need the ambient environment to be heated as well. I am looking for some of the larger oil filled radiant heaters available but can only seem to locate residential models, as always. I am familiar with an alternative industrial type, no-flame, oil filled heaters that use diesel fuel that are used a lot out in the midwest and northern climes. This would work perfectly as I could pipe the heat in via canvas duct from a slightly remote location. I thought some of the equipment rental places in the NC Raliegh triad area might have them, of course they do not.

Anyone have any ideas how I could heat up this area without any open flame, or electric strip sources.

I have considered purchasing a barrel heater kit with legs, etc; and make a 50 gallon horizontal drum heater. I could pump the heat off of the barrel alone, into the area with canvas duct and a ventilation fan. The positive pressure within the duct would prevent any vapors from meandering up the duct back towards a hotter heat source. It does not need to be hot in the area, just warmer than 50 degrees.

I can work the Isophthalic polyester resin down to 60 degrees without any structural issues.

Thanks, chris

-- Chris Harrell - custom callmaker "Quacky Calls" Eastern NC.

2 replies so far

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182 posts in 2478 days

#1 posted 11-06-2012 12:35 AM

How large of an area are you trying to heat? Is it insulated? One option might be to hang floor-to-ceiling 10 mil plastic sheeting in a smaller area to trap the heat from a modest sized heater. If that isn’t doable, your barrel heater idea might work, just be careful to route the exhaust far enough away that you don’t carbon monoxide yourself with the ventilation system.

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364 posts in 4326 days

#2 posted 11-07-2012 03:37 AM

approximately 12×15 with 12’ ceilings. I want to make the barrel heater but time is of an essence and really that would just create another project that would, welll you got it…take away from – - – -

I was wanting to buy some form of oil filled radiant type heater that is larger than most readily found online. I know out in the midwest those guys use these which are of a much larger scale. I would not necessarily need the towable type but something in the low-midrange would suffice. I just cannot seem to locate the necessary websites.

Apparently keyword searches are not composed correctly to locate the correct heater.

I did find some larger residential types, still a little too small however for the overall size of the work area, but those are only sold in the UK.

go figure.


-- Chris Harrell - custom callmaker "Quacky Calls" Eastern NC.

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