A chimney pot is a nice way to finish off the top of your chimney system. Often you would also fit a rain or anti-downdraught cowl on top of the pot. They are robust and add a little extra height on to the chimney at the same time.
The roll top chimney pot is the 'standard' chimney pot fitted to thousands of chimneys across the UK. There are different heights and colours to choose from and a wide variety of cowls can be fitted.
The straight beaded chimney pot is the pot which we normally use on top of a pumice chimney system - they have a good cross sectional area and because they do not taper they do not restrict the flow of flue from the chimney.