1930s infill material

bsr

Joined
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Gloucestershire
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Hello

My 1930s house has solid floors - screeded and no vents. It's built on a sloping site with the dpc at front about 1m above ground level.

I want to fit an ensuite, ideally taking the wastes through the floor and then out of the house well below dpc but above ground.

Any idea what the construction is likely to be? Bitumen dpm, slab, lean mix infill or soil below? I presume beam and block wasn't a thing in the 30s?

Thanks


bsr
 
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There wasn't a standard then, or a usual way of doing it?

Would mud be a possibility or would it be something with a bit more integrity?
 
Would have just been soil most likely then hardcore then slab then battens in screed builders paper then chipboard. Depends how well the house was built etc
 
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particle board as flooring only really showed up in UK during 60's so i believe.

bsr, why not put a couple of inside/outside pics up?
the odds are you have a conc slab with no membrane.
cut the slab with a saw dont just smash out a trenching path - the saw cut gives you a clean edge to make good to.
you can run soil and waste pipes clipped on outside walls.
 
bsr, good evening.

As you see from the above posts, the infill could be almost anything, from sand to gravel, or pebbles or even a load of soil?

Do you live in what was once a Coal Mining area? if so there may be a load of old Pit Bing Waste under there?

How about you consider erecting a small height plinth on which can be placed the Shower tray, or Bath, then use the depth of the plinth height to conceal the waste pipework? extend the plinth to the front of the bath or shower as a step into the facility.

The WHB can take care of itself, likewise a WC can go direct out well above floor level.

Ken.
 
Thanks all. No point posting pictures, all you will see is a screed from inside and bricks / DPC from outside.

I guess it will be pot luck what I find below! At least it sounds like it's unlikely to be 1m of C40 concrete so it will be easy enough to go through.


bsr
 
bsr.

How close is the external DPC to the internal floor level?

Could be that there is some sort of a DPC under the slab???

Ken
 

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