TECHNICAL DOSSIER PROTEADUO TRIARMATO 4 mm ... - Hitchins

ROLLBASE
Polymer bitumen membrane reinforced with glass fibre felt and with the lower face finished with a non woven
polyester , the top surface is protected by a PE film. Mass per unit area 2 kg/m², the width of the selvedge is
5 cm and the dimensions of the rolls is 10 by 1.05 m.
3 rd Section
Application’s information
Loose laid application
By “loose laid” we mean application of waterproofing system completely detached from the substrate: this
method cannot be used for slopes higher than 5%, as a heavy protection is always necessary (with gravel or
concrete tiles); moreover, this system is advisable when the membrane is applied on thermal insulating
panels. Perimeters and parapets and vertical walls are always fully bonded by torching. In case of doublelayer
application, the second layer is fully torched to the first one, keeping the first layer staggered 50 cm
from the second one.
Partially-bonded application
When “partially-bonded ” the waterproofing systems must be adhered using a predetermined ratio to give an
even application over the total surface area. On concrete substrates, the surface has to be treated with a
primer and spot-torched afterwards, in order to obtain a bonded surface for 50% of the whole. This way of
application is advised for slopes up to 40%. Perimeters and parapets and vertical walls are always fully
bonded by torching.
Alternatively, we may suggest the use of perforated membrane “Perfobase” for slopes up to 20%; for higher
slopes the use of mechanical fixing at the end of the roll is advised.
In case of non continuous concrete substrates, in between the substrates itself, stripes of at least 20-cm
width have to be mechanically fixed (and/or by torch) to one of the two adjacent elements. Where a doublelayer
system is requested, the second of these layers is fully torched on the first, keeping a staggered of 50-
cm between the membrane of the first and second layer.
On substrates made of thermal insulating panels, a bituminous fibreglass felt weighing 1500 g/m2 has to be
applied as a first layer. This should be spot-bonded using hot oxidised bitumen 85/25 for slopes up to 5%, or
100/30 oxidised bitumen type for slopes between 5 and 15% , in order to obtain a minimum bonded surface
equal to 50% of the whole surface.
Afterwards, the membrane has to be completely torched. Alternatively, we may suggest the use of “Defend
3” or “Helasta V3” for slopes up to 20%, whereas for higher slopes a mechanical fixing of the heads of the
rolls will have to be considered. For application on thermal insulating panels with bitumen treated surface,
the perforated membrane “Perfobase” could be used, by fully torching the waterproofing layer afterwards.
The vertical borders and perimeters are always carried out by fully bonding.
Fully bonded application
By “fully bonded” we mean application where the membrane is fully adherent to the substrate. In case of
discontinuous concrete elements and load-bearing concrete element substrates, please refer to the chapter
above, except for bonding that has to be done on the whole surface.
Similar systems are considered for application on substrates made of thermal insulating panels, stressing
that bonding of bituminous fibreglass felt or of the membrane has to be fully adhered. Alternatively, we may
suggest to using membrane “Defend 3” or “Helasta V 3” fully bonded. This way of application is advised for
slopes up to 40% on concrete substrates and up to 20% for substrates made with thermal insulating panels.
For larger slopes, a mechanical fixing on the head of the rolls will have to be taken into consideration. In
case of double-layer application, the second membrane is fully bonded on the first, ensuring the two layers
are staggered of 50cm. This kind of application must be used next to dumping area, vertical borders and
expansion joints.
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