DUPLAS P is a high quality polymer-rich APP modified bituminous torch-on membrane with a reinforcement core of spun-bond non-woven polyester mat. Used for waterproofing of roofs, balconies, Multi-storey car parks and any concreted or cemented flat surface that need waterproofing in building and civil engineering projects.
The DUPLAS range belongs to the plastoproof group of membranes produced using a special grade of bitumen modified with Virgin APP polymer. The polymer-rich mixture is used to saturate and coat both sides of the polyester mat to the required thickness of the membranes.
DUPLAS P membranes are tested in accordance with UEAtc (European Union for Technical Agreement for Construction Industry) and can be tested as per ASTM D5147 (Standard Test Method), ASTM D6222 (Standard Specification) and other relevant international standards.
Duproof is an ISO 9001 Quality Assured company, and DUPLAS P membranes carry a material warranty against any manufacturing defects.
|Nominal weight||Kg / m2||3.5||4.5||5.5|
|Dimensions (length x width)||[m]||10 x 1|
|Coating||APP - modified bitumen|
|Carrier||180/200/250 g/m2 (P)|
|Top surface||Polymeric foil (F) or Sand (Q) or Slate (S) or (QQ) For both side sand surface|
|Bottom surface||Printed Polyethylene foil|
To order specify finish, reinforcement and thickness e.g. DUPLAS FP 200 4mm for foil finish, 200g/m2 polyester reinforcement and 4 mm thick sheet membrane.
DUPLAS P membranes are used where a tough, high quality waterproofing system is needed, such as
Surfaces onto which the membrane is to be applied must be sound, clean and dry. Dust, loose material and protrusions must be removed and cracks, holes etc. made good.
Priming: Apply one coat of DUPRIME solvent based bituminous primer to all surfaces at 5-6 m2/lit and allow to dry. Primed surfaces must be covered within the same day. If left exposed for longer periods, clean and re-prime before applying the membrane.
Membrane Application: Position the rolls carefully with the correct orientation before the torching operation begin. Heat the lower surface of the rolls with a propane gas torch and unroll as the bitumen begins to melt. Maintain minimum 100 mm side laps and 150 mm end laps between rolls, staggering the joints where possible. All seams must be heat sealed from the top to ensure watertight laps. If used as Slated surface for exposed application additional surface protection is not required.
Protection: If used in Substructure and underground tanks once laid, it is recommended to protect the membrane from long-term exposure, construction abuse and backfill, preferably within 24 hours. On vertical areas DUBOARD is recommended; on horizontal surfaces a minimum 25 mm thick sand-cement screed may be used.
DUPLAS P membranes are also suitable for partially bonded or loose laid installation. Contact the technical department of your local distributor for advice.
DUPLAS P membranes are supplied in rolls of 1m X 10m; shrink wrapped on pallets. Rolls must be kept upright on pallets under shade. DUPLAS P pallets should not be stacked one over the other.
There are no direct health hazards associated with DUPLAS P membranes. Normal precautions for hot and volatile substances should be observed during application. Refer to our MSDS sheets for advice.
|Softening point||[o C]||ASTM D 36||150|
|Penetration, @ 25oC||dmm||ASTM D 5||14 - 21|
|Heat resistance, 2 hrs. @110oC||-------||UEAtc||No flow|
|Flexibility at low temperature||[o C]||DIN 52123||-2 to -5|
|Water absorption||%||ASTM 570||<0.4|
|Type of carrier||g/m2||Spun-bond Polyester Mat|
|Tensile strength (L/T)||[N / 5 cm]||UEAtc||750 / 650||900 / 700||1050/850|
|Tear resistance (L/T)||N||UEAtc||220/235||230/245||250/265|
|Puncture resistance Static
|---------||UEAtc||L4 Static @ 25 Kg
I3 Dynamic @ 9 Joules
In accordance with the standard up to 20% variation is expected
Note: Tolerances on nominal values shown are as per UEAtc directives for polymer modified bitumen membranes. These data are correct at the time of printing but may be changed without any prior notice subject to client`s requirements availability of raw materials or other conditions. This data sheet supersedes all previous publications pertaining to this product. All reasonable care has been taken in preparing this document, which to the best of our knowledge is accurate and true. Recommendations and suggestions are made in good faith and should only be considered for general guidance. No liability is assumed or taken by us in relation to the application, as usage conditions and any labour involved are beyond our control.