I have an open flame fire. When I am in bed and it is raining I can hear a dripping noise (the flue is right above my head), it sounds like it is on metal. I went into the loft and it sounds like the inside of the flue where it is angled from the downpipe to go into the flue in the wall. Sometimes in heavy rain there can be no drip for a few minutes then suddenly it sounds as though something has overflowed starting with what sounds like 10 drips a second slowing to 1 a second then back to it's normal rate of about every 15 seconds. There is a very small leak coming from the duct tape in the loft. I had the guy in who fitted it and he said it is normal now for the new flues, he said it is an overflow and nothing to worry about. He put some more duct tape around the pipe. Any ideas if this is correct? Are there any better pipes for the roof?
I can email pics if anyone wants me to as I can't see how to put them into this post.