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I've got a hole I no longer need : well 3 actually


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Not worth a post is it? Unless those three holes are in the slab.

At one stage, we planned to duct our MVHR from the piggery (a small building 5 meters from the main house) into Salamander Cottage. But @TerryE and others dissuaded me (condensation risk). Thanks.

 

Now I need to back-fill the holes. Since they come through the slab, I thought I'd check 

  • a bit of radon barrier at the very bottom
  • 500mm of EPS 
  • some fairly strong concrete on top

Kinda hoping it's as easy as that..... 

 

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