I asked a local roofing company if it might be worthwhile for me to block or cap one of my chimney pots, as there's currently no fire at the bottom of the chimney. I thought this might be a good idea to prevent water & garbage falling into the chimney, and might also reduce noise when it's very windy - is this likely to help?
They quoted for fitting "one chimney pot and 4 GCI gas terminals to the rear chimney stalk". I'm not entirely sure what a "stalk" is in this context, and as far as I know the only outlet from that chimney already has a pot on it. Can anyone guess why 4 GCI terminals would be required rather than just one - assuming that these are basically just metal hats/covers?
What do the letters GCI stand for? I tried googling but got zillions of hits for GCI...