A little over 5 years ago I bought a 1970s (dump) house and discovered a
water leak in buried piping (concrete ground floors).
This has resulted in a significant number of rotted skirtings and door frame
Also, at each doorway threshold, the floor screed has blown.
Digging down below floor level and investigating the construction detail
yesterday I discovered:
there doesn't appear to be any dpc to internal wall
the dpm below the concrete floor slab comes vertically up to floor level at
the edge of the slab alongside the internal brick wall IYSWIM so the
internal wall has plastic membrane either side of it from
just-below-floor-level to the underside of the slab
As a result, threshold bricks are damp, have lifted/swollen and have broken
away the floor screed.
- posted 12 years ago