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New Production
Fondaline, made
of high density polyethylene is used for the draining of ground
water and the protection of the underground waterproofing
systems against damages caused by ground pressure. Its strong
and flexible naps resist against the mechanical impacts caused
by the back filling of the ground avoiding any kind of damage on
the surface of the waterproofing layer. The air gap created by
the naps of Fondaline between the ground and building parts like
basement walls or floors is ideal for all kinds of drainage.
The modern line
of Onduline Italia plant in Altopascio has been equipped with
the newest technologies and enables the production of high
polyethylene membranes of high performance and lng life time.
High Quality
The naps
Fondaline against compression even higher than 250 KN/m2
Keeping continuously an air gap of 5.5 1/m˛ between the walls or
floors of the building and itself. This space is big enough for
the drainage of the rain or ground water, as well as for the
evaporation of humidity if supported with a suitable system of
ventilation.
In the
underground parts of the building there is also the problem of
the compression caused by the soil leaning to the basement
walls. Fondaline’s 1850 naps by m˛ provide a homogenous
distribution of the ground pressure and do not allow any
mechanical damage on the surface of the waterproofing materials.
Protection of Basement Walls and
Foundations
Description
The underground
parts of buildings must be protected against damp and ground
water. This is not only necessary for a comfortable use of the
building but also for safety reasons. Humidity leads to the
corrosion of the steel. When rust affects the reinforcement of
the concrete the structure system is also damaged and this can
be dangerous for the stability of the building especially in
critical situations like earthquakes. Therefore, foundations and
basements have to be waterproofed. Moreover, the waterproofing
materials are very sensitive. If not properly protected, they
are under the risk of being damaged during the back-filling of
the building site, Fondaline’s tough but flexible body absorbs
mechanical impacts of ground parts like stones and gravel and
prevents any such damage on the waterproofing layer even if they
might hit the wall. Furthermore the air gap created by
Fondaline’s naps links the ground water to the drainage tube on
the bottom.
In places where
there is no risk of ground water, Fondaline is also efficient if
it is used as a single layer for damp proofing. During the
life-time of the building Fondaline continues to protect the
underground walls also against the attacks of roots and most
chemicals which might be harmful for underground building parts.
Application
Fondaline has to
be placed so that the black side touches the wall, the brown
side the soil. Rolls can be applied horizontally or vertically
depending on the depth of the building. Overlaps of 10cm are
necessary.
Until the
back-filling the position of Fondaline has to be fixed so that
no damage occurs on the waterproofing by any kinds of fixing
elements. For this purpose the system consisting of self
adhesive nails and washers can be used. If needed, the system
can also be combined with hard-board insulation panels like XPS
or EPS. Fondaline can be nailed directly to concrete only on
levels where there is no risk of infiltration of damp or ground
water.
Internal Repair
of Wall Damages Caused by Damp and Humidity
Description
If basements are
not correctly waterproofed from outside, the walls get mouldy
and the damage of humidity cannot be repainting or plastering
from inside
If Fondaline is
applied together with a new layer of plaster or gypsum board,
the final surface of the wall remains clean and smooth. Combined
with opening for ventilation on the floor and ceiling level the
air gap created by Fondaline between the new finishing and the
existing wall helps also to the evaporation of the damp
Application
In case of
roughness the existin plaster has to be repaired with cement
based compounds. Fondaline has to be placed with the black side
against the wall. It has to be fixed every 30cm by nails or
dowels and screws. Overlaps must be of 10cm. if plaster is used
for the final finishing, a reinforcement mesh, to be fixed to
the wall together with Fondaline is necessary.
Internal Repair
of Floor Damages Caused by Damp and Humidity
Description
Mould is a
problem also for ground slabs. If no waterproofing is made
during the construction period, damages and deformations appear
on finishing layers of ground slabs caused by humidity. The
problem can be solved by an addition damp-proofing layer.
Fondaline is the
ideal material for the internal damp-proofing of floor, because
it can resist not only against humidity, but also against
vertical loads, as Fondaline’s 8mm high naps do floor, which can
also be ventilated at wall flashings.
Application
In case of
roughness the existing floor has to be repaired with cement
based compounds. Fondaline has to be laid with the naps(black
side) to the ground. It has to be fixed every 30cm. Overlaps
must be of 10cm. At wall flashings 10cm of Fondaline has to be
turned upwards in order to provide a good air circulation. If
necessary an insulation layer of XPS or EPS can be laid over
Fondaline, which is to be covered with reinforced screed and
flooring materials.
Protection of Ground Slabs against
Humidity coming from the Ground
Description
Even if concrete
slabs for open areas are coated with materials like asphalt,
they have to be protected against the humidity coming from the
ground. The damp-proofing layer must be also resistant against
impacts, compression and tearing otherwise it can easily be
damaged during the construction works for the application of the
ground slab. The concrete is well protected if Fondaline is
laid loosely on the compressed ground. The system is also safe
against mechanical damages, as the loading capacity of Fondaline
is over 25 tons/m2.
Application
Fondaline is laid loosely on the ground with the black side
downwards. The overlaps have to be 20cm.
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