PARAFLEX Series
Product description
Elastomeric bitumen-polymer (SBS) waterproofing membranes. The
prefabricated PARAFLEX Series membrane range includes:
PARAFLEX NT (black, continuous polyester thread, non-woven textile
reinforcing, thickness 3 – 4 mm); PARAFLEX ARD N (slate flake finish on
upper surface, strengthened glass-wool reinforcing, weight 3.5 kg/m2;
PARAFLEX W (black, strengthened glass-wool reinforcing, weight 3 – 4
kg/m2; PARAFLEX ARD/HS (slate flake finish on upper surface,
continuous polyester thread, non-textile textile reinforcing, thickness 4 mm
excluding slate); PARAFLEX ARD/S (slate flake finish on upper surface,
continuous polyester thread, non-woven textile reinforcing, weight 4.5
kg/m2). The specific formulation of the Elastomeric bitumen-polymer
compound ensures good mechanical performance, flexibility at low
temperatures (-25 °C) fatigue resistance and an ultimate elongation for the
compound in excess of 1500%.
Certification
Agrément ICITE: PARAFLEX NT4 – PARAFLEX ARD/HS, PARAFLEX W3
+ PARAFLEX ARD/S SYSTEM
Fields of use
The PARAFLEX Series is recommended for:
 Waterproofing in areas with a rigid climate or installation during cold
seasons;
 Waterproofing of light, prefabricated, elastic structures subject to
considerable
expansion:
metal
roofing,
suspended
roofing,
prefabricated reinforced concrete roofing;
 Waterproofing of “inverted” roofs, under thermo-insulation elements;
 General waterproofing purposes.
Technical specifications (1)
PARAFLEX
Roll size
Thickness
Weight
N N W W ARD ARD ARD/H
T3 T4 3 4
/N
/S
S
M
10 x 1 10 x 1 10 x 10 x 10 x 1
1
1
mm
3 4 3 4
4
(excludi
ng
slate)
kg/m
3,5
4,5
2
Orthometrics
Colour
Tensile strength
(maximum load=ultimate
tensile strength)
 longitudinal resistance
 transversal resistance
 longitudinal elongation
 transversal elongation
Low temperature flexibility
High temperature
dimensional stability
Impermeability to water
Permeability to water vapour
Static puncture resistance
 on rigid substrate
 on non-rigid substrate
Dynamic puncture
resistance
 on rigid substrate
 on non-rigid substrate
Tearing strength (Method B)
 maximum L load
 maximum T load
mm
 10
black
 10
black
 10
 10
 10
grey (2)
N/5c
m
N/5c
m
%
%
°C
°C
800
600
50
50
360
215
2
2
360
215
2
2
800
600
50
50
800
600
50
50
- 25
 100
- 25
 100
 60
 60
80000 80000
- 25

100
 60
- 25
 100
kPa

- 25

100
 60
N
N
 60
80000
PS4
PS4
PS2
PS2
PS2
PS2
PS4
PS4
PS4
PS4
PD4
PD4
PD4
PD4
PD4
PD4
PD4
PD4
PD4
PD4
150
200
150
200
150
200
150
200
150
200
Fatigue resistance over
fissures
(temperature - 10 °C)
 cycles on new test strips
 cycles on aged test strips
Mineral
self-protection
strength
g/m2
(average membrane weight
loss)
Dimensional stability L and %
T
 500
 200
 500
 200

500

200

500

200
 500
 200

300

300
 300
 0,5
 0,5
Installation
Installation procedures are a determining factor for the performance of the
waterproof covering. PARAFLEX Series membranes should be installed
using a propane gas torch and joints between panels shoulds allow an
overlap of 8 – 10 cm for lateral joints and 12 – 15 cm for haed
joints.Elastomeric bitumen-polyester compounds have a low resistance to
UV rays and therefore PARAFLEX Series membranes should always be
used in the design and installation of waterproofing systems. In order to
obtain correct, detailed information or to determine the most appropriate
solution for each specific case we would advise you to consult our
technical publication “Waterproofing membranes: General guidelines for
installation” (Quaderno 7) and the Dataquad CD Rom. The Technical
Service Department at Imper Italia S.p.A. is in event willing to study
specific solutions, apart from providing all the necessary for making the
best possible use of these materials.
Notes
(1) Unless otherwise specified all values and tolerances have been
determined in accordance with UNI 8202 standards and UEAtc
General Directives as regards SBS bitumen-polymer membranes.
(2) On request: green, red, brown, white and black. As these are natural
products there may be colour differences as a result of surface
orientation of the flakes and normal pigmentation tolerances.
Considering the various situations in which this product may be used and
the effect of factors outside our control (substrates, operating conditions,
failure to follow instructions, etc.), Imper Italia S.p.A. cannot be held
responsible for the results obtained. Future developments together with
continuing research to determine maximum performance levels may result
- in the course of time - in changes to information given in these
specifications. However, Imper Italia S.p.A. is under no obligation to
advise all interested parties in advance of such changes.