small section of concrete floor?

[havingagoatDIY]

we have a Georgian house with a Victorian extension. I have spent the weekend taking down a stone and brick alcove that was built to one side of the chimney breast.

however once I have removed all the masonry, there is no floor. the rest of the room has a solid concrete floor, which I assume has no insulation and I don't know if it has a dpm.

it is only about 1m2. should I put down a dpm and then just concrete over. as it is such small area do I need to excavate far, or just put down some concrete on a polythene layer.

any help greatly appreciated!!

 

[theprinceofdarkness]

I would dig a pilot hole up against the edge of the concrete to see if there is any DPC and insulation.
Frank