water runs down the exhaust

I have just put in a gas fireplace. My manual said to put in a 1/4 inch of incline for every foot of horizontal extension. my exhaust runs horizontally for about 6 feet. Thanx to the incline water runs real nice, all the way into my gas fireplace. According to the manual only 1 particular cap can be used for the end of the pipe due to odd diameter of the pipe. This cap is junk, water has a clear shot at my exhaust and it runs down the sleave. I made a dam out of sealant. I put it in about 3 inches from the opening. If it doesnt burn up from the heat, is this an ok fix? Don't worry, the sealant only raises up about a 1/4 of an inch and I dont think that it blocks much of the exhaust. I hope.

 

I wouldn't put any sealant in an exhaust that is flammable or may melt and run back down into the fireplace.
To be sure there is more than one type of vent cover that will solve your rain water/snow problem.
Check with your local Building Inspection Department.
Good luck!
Mike

 

The sealant I used is good up to 400 degrees. Does the exhaust get hotter than that? I will try it tomarrow and see, I guess. If it doesn't work I will go to the fireplace dealer and see what they suggest. Building codes do not regulate fireplaces around here. There is a plumbing inspection only for fireplaces. I went to city hall and they said that the code was to follow all instructions and observe all warnings in the manufacter guide. Not very helpfull considering the instructions are the root of the problem. I checked the guide for bathroom sink installation and it recommends 1/4 inch per foot drop for proper flow for the sink drain. So it makes perfect sense that I have built the perfect drain for rain water to DRAIN right into my fireplace. Why did I have to chose now to read and follow instructions? Oh well, adapt and overcome. Thanx