Vermiculite Calculator

Use our calculator to get a better estimate of how many bags you require of vermiculite for your installation.

Once you have completed the calculation please go to our Vermiculite product page to place your order.

So How much do I need?

Enter the details of your chimney and flue liner below and click calculate to get the number of bags of insulation you require.

Please Note: all dimensions have to be entered in metre's.  for example 130mm (5inch) chimney liner would be entered as .130