logs you can eliminate this problem,yes they are much more expensive than logs from your local tree surgeon in a 1 ton builders bag.  Damp logs are  not actually 1 ton in weight which is used as a general description by some suppliers. Logs are sold by area ,Fitch Fuels equivalent is 1 cubic metre and many builders 1 ton bags  are named this for carrying builders sand and such are only 0.750 cubic metres in area which is a quarter less than our1 cubic metre bulk bags.