lozarus
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- Reaction score
- 324
I mean ultimately AFAIK it's out of zones, so why not (in reg terms)? I've used the paper thin stuff personally in my house for one job - but I've laid the concrete over myself, and it's quite obvious that it's happened (and noted accordingly at DB) so I can't really comment on what other trades may do. Ultimately the risk of someone drilling into the floor in the future is still there - but you can't eliminate every risk - and it's a much lower risk than being scratted across the wall at every angle and getting caught by a picture book. I've also seen it don't plenty of times in schools with 20mm PVC conduit. Again, the concrete itself provides plenty of protection from external influences, as long as the route is logical.