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Options for 50's batten/slab concrete floor - Crumbling & Damp

Postby Mr-Lister » Sat Nov 07, 2020 10:30 pm

Recently bought first home,
Having pulled up laminate & floorboards on ground floor, the floor is concrete slab with wooden battens sunk-in which the boards were fixed to.
The floor has clearly been damp for a long period of time and in parts (exterior wall, where there has been leaks/leaking gutters) is crumbly.
The original battens laid into the floor are totally rotted and in the process of being removed.

My thoughts so far are:
-Sure up the existing floor, fill any big holes etc with new cement.
-Install DPM / Latex screed
-PIR board and Chipboard flooring for new surface.

Particularly stuck on 2 things:
-whether i should leave the channels the battens sat in empty to allow for airflow from airbricks/prevent water pressure if the floor is still damp.
-Where/what layer to put the DPM/screed in - If I lay this directly over the current floor, the screed would be unsupported over the batten channels if I leave these unfilled.

Im totally new to repairing flooring/damp and mainly work with wood - I'd appreciate any thoughts on making the current floor good and product options.


NB, will post some photos of the floor as is over the next few days
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