S2 Renovation

1. Hardcore (10-15cm) 2. Sand (5cm +/-) 3. DPC Membrane 4. Concrete ( reinforced if large area) As mentioned, compact the HC and sand layers first. The sand layer is purely there to stop the HC from perforating the DPC. If your builder has used 0/30 (calcaire melange) and compacted this well (ie. flat surface) then the sand layer isn't 'really' necessary. If he's used broken tiles, then beware!!! Hope this helps.

If MAAF can't insure you, then, based on a friends recent experience, you'll need to re-register your business with the CDM. This involves closing your existing business (at a cost), and creating a new business (you can, however, retain the same name). The reason that you can't be insured is that you've been trading for over 6 months without insurance. Insurers can't, supposedly, cover any work you have done beyond this period. The only other way is to form a SARL with someone who has insurance. Sorry to be the bearer of bad news!!