Replies

1. 
   Bob_Walker | Mar 05, 2002 03:16am | #1

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   Seems like a large amount of water to me, too, although if they're commercial type gas ranges, they can put out a lot of water vapor in the combustion gases.

   I think you need top pin down the source before you devise a remedy.

   Any rain lately? It could be a leak.

   Is the water associated with any particular events? Any time periodicity? (Did I make that word up?)

   There should be a damper on it already.

1. 
   Andre_J._Ciais | Mar 05, 2002 07:23am | #2

   *Andre'J. CiaisThey are electric ranges. Yes, there has been rain. The problem has occured without rain. I have been in the attic have not seen any signs of leakage. The roof vents have caps. So, I do not think they are leaking. There is a damper right at the hood.

1. 
   Bob_Walker | Mar 05, 2002 03:53pm | #3

   *Darn, I was hoping they were gas, because I just found some info on water vapor in comubustion gases: "Gas combustion produces water vapor as a byproduct, in known quantities: 100,000 Btu of gas puts out about 1.1 gallons of water."This was from the Journal of Light Construction article on "Vent-free" heaters.Of course, maybe the occupants are cooking a lot of pasta or other high vapor producing dishes, which couyld put a lot of vapor up there.I'd say you're on the right track to increase insulation to prevent condensation.