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Is Rexcel Water based conversion coating flammable ?

I had a contractor ask  me the question is the conversion coating flammable as he was going to finish a wine cellar in a basement where there was a gas burning furnace. Normally when spraying lacquers on a job site you want to make sure that all open flames are extinguished Vapors sometimes being heaver then air can sprayed along the ground to a gas burning water heater and go boom –not good. Matt the contractor wanted to find a water based material that would not have this problem and was interested in the Rexcel conversion coating  the following is my response …

“The materials are not flammable However, they are potentially combustible, you should always spray in an area that is properly ventilated and I would, if at all possible turn off the furnace while spraying. Inert dust, such as saw dust or even flower can become explosive all by itself if there is a sufficient quantity of in suspended in the air. Like wise with a sealed room full of over spray and vapor.

The Rexcel conversion coating is water based but it does have volatile chemicals in it.  If for some reason you can’t turn off the furnace then ventilate the room so that your fumes are being sucked out of the room and not into the furnace.”

All that being said I doubt you would have a problem, but I don’t want to be the on that gets you blown up. What I have done personally in the past when confronted with such situations is to erect a temporary spay booth around the work with Plastic and 2X2s or something similar. Tape it to the ceiling and floor, Home depot sells zippers that you can tape on to the plastic and use as an entry and exit.  Then I would duct in (either with plastic or flex dusting you can also find at home depot) and air supply and an exhaust, I have built some pretty spiffy spray booths in some real swanky homes where the customers did not want to spell lacquers. You can put a A/C air filter on the exhaust side to catch particles before it goes out a window.   

 Let me know if that is helpful.

Greg Saunders

ANNEX PAINT

November 12, 2009 - Posted by | CIC Centurion, water based Conversion Varnish, Conversion varnish, Tips and Tricks, Water based Lacquers | , , , , ,

1 Comment »

  1. I am extremely interested to reading this.
    very useful,keep up great posting.

    Comment by Cellar Conversion | April 23, 2010


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