I'm moving / downsizing to a new location. I'm going to replace the old 1.5 x 2m "garden" shed with a larger 3 x 4m "workshop" shed mainly for storage with the main work area to be the adjoining (but sadly unenclosed) carport. The existing ground is 150 x 150 x 50mm pavers which I suspect are not laid on any kind of membrane (why would they - it was the washing line area). I'd ideally (in terms of time and money) like to leave the existing paved area and lay the new shed on top (as is...

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