Joined: July 2004
||Posted: 27 Nov. 2019,14:04
I suspect the answer is probably "most likely!"
Will this workshop have a floor, or is the plan to use the exising and new base as the floor? If the latter, then you need to consider how you'll keep it watertight and allow for adequate drainage. However, if you're planning on having an internal floor, carried on joists of some kind, then the mixed-origin base will be no problem at all.
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