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Posted by Dan on April 28, 2010 at 07:44:34:
In Reply to: Re: direct vent exhaust blistering paint posted by Heatpro on April 27, 2010 at 14:18:20:
: Can you cut the shingles from the backing wall surface and set the pan into the square hole, so no shingle flammables are behind the pan to catch transmitted heat? If necessary, you could use two pans, rim to rim with the back pan against the flat wall surface and the other pan facing it. That would give even surfaces to silicone neatly.
: Your plan seems sound.
Thanks for all your advice. Any ideas on how to cut a nice round 5" hole in the pan? Also, with the pan lying against the house and the 2" air space between the pan and house, isn't there a risk of condensation inside the pan during the winter?