The Sealed System
In soil retaining situations such
as basements and vaults etc. the DELTA sealed system is
recommended. The membrane
selection depends on the required
finish and flow rate if applicable.
All membrane junctions, fixing
points, service entries and other
protrusions are sealed with the
DELTA range of sealing products.
Where active ground water is
evident or expected drainage of
one form or another should be
incorporated into the specification.
Our technical staff are available to
give advice in this respect.
The Ventilated
System
In above ground situations or in
areas where no free running water
is expected, for example where
external pavements have been
built up, the ventilated system can
be used. The ventilated system
with air gap at top and bottom
does not require sealed joints or
fixings, a 200mm overlap is
sufficient in this situation. This
method is seen as a sympathetic |
solution in Heritage type properties
as a general damp proofing
system. The fabric of the building
remains unchanged but the new
internal surfaces are ‘dry’ and are
salt and contamination free. Both
dry lining or plaster direct finishes
are available on the ventilated
system.
Floors
As well as being a complete
waterproofing and damp proofing
system, the DELTA system is also
used to upgrade damp and
defective floors. With excellent
crush resistance the system lends
itself to a variety of different
finishes which include conventional
screeds, thin layer fast drying
screeds and wood based floating
floors. Insulation can also be used
in conjunction with the system
where required. The system can be
linked to the D.P.C. constructed
within a new wall or to an existing
D.P.C.
Preparation
As the membrane systems are mechanically fixed there is no reliance on the ability of the product to bond to the substrate |
The DELTA system can be applied to a variety of different substrates for example over existing renders or broken down bitumen coatings, etc. This can be easily achieved without detriment to the integrity of the system.
Damp Pressure Equalisation
The studded structure of the
membrane allows the dampness behind the membrane to move in all directions unhindered, therefore the whole of the wall or floor surface takes the damp loading. Break downs created by weak points are eliminated. The product does not divert the problem to other areas.
Flexibility
In structures where movement or vibration can be a problem,
examples being under street vaults, railway arches, and buildings constructed with movement joints,
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