DAMP EARTH RETAINING
WALLS?
If you have a
damp earth retaining wall i.e. that has earth banked up on the outside,
it is probable that the mortar joints of the brickwork could have
perished allowing damp or water penetration to the inside.
Solution:
There are a number of ways of tackling
this problem however, cost, final use of area and disruption including noise
and dust nuisance all play a part.
EXTERNAL:
If it is impractical for membrane
to be applied internally then we would strongly suggest that Newton
Geo-drain is applied externally.
In the first instance any earth
abutting the structure would need to be excavated.
Newton Geo-drain should be applied
to the outside walls and a french drain incorporated at the bottom of the
membrane.
Protection board should then be
added to the outside face of the membrane (this will prevent damage to the
membrane via stones or sharp objects in the backfill).
Prior to the backfilling an external
profile strip should be added to the top of the membrane this is designed
to prevent any rain penetration running between the original structure and
our membrane. (see tech
drawing no JN.108.)
INTERNAL:
If
the internal wall is to be tackled then Newton
System 500 should be used. This membrane can either be dry-lined
or rendered. We would recommend that below ground, Newton
Basedrain should be applied at the wall/floor junction.
If water penetration is
severe a sealed system is required. Again Newton
500 or Newton 520 (a larger
studded membrane capable of tackling a greater water flow) would be
applied to the floor. As the membrane systems allow water into the
building, unless natural drainage is evident, it would be critical
that the water is removed, ideally via incorporating a sump chamber
within the floor (always located at the lowest point) with a Newton
Titan or Titan Plus pump system.
Newtons Products used in the Solution:
Externally:
Newton Geo-Drain
Newton fixings
External Profile Strip
Internally:
Newton 500/Newton 520
Newton Basedrain (& Accessories)
Newton Nu-Seal plugs (red/white)
Newton Rope
Newton Tape
Newton Overtape (Corner Strip)
Titan Pump range