dulas p

Technical Data Sheet

DULAS P is a high quality polymer-rich SBS modified bituminous torch-on membrane with a reinforcement core of spun-bond non-woven polyester mat, used for tanking and waterproofing of substructure areas in buildings and civil engineering projects where malleable composition is preferred. The DULAS range belongs to the elastoproof group of membranes produced using a special grade of bitumen modified with virgin SBS polymer. The polymer-rich mixture is used to saturate and coat both sides of the polyester mat to the required thickness of the membranes.

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FEATURES AND BENEFITS     

  • High mechanical properties: good movement accommodation; resistant to tear and puncture
  • High resistance to hydraulic pressure: provides an impermeable and low absorption layer.
  • Wide temperature tolerance: stable in tropical climates; resistant to thermal ageing and shock.
  • High chemical resistance: withstands effects of salts and other corrosive agents in soil and water.
  • Versatile: available with a range of reinforcements, thickness and surface finishes for use in variety of applications.

SPECIFICATION COMPLIANCE

DULAS 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 D6164 (Standard Specification) and other relevant international standards.

QUALITY ASSURANCE & WARRANTY

Duproof is an ISO 9001 Quality Assured company, and DULAS P membrane carry a material warranty against any manufacturing defects.

TYPE AND FINISH

Thickness [mm] 3.0 4.0 5.0
Nominal weight Kg / m2 3.5 4.5 5.5
Dimensions     (length x width) [m] 10 x 1
Coating SBS – modified bitumen
Type of carrier 180/200/250 g/m² polyester mat (P)
Top Polymeric foil(F) or Sand(Q) or Slate(S)or(QQ) for both side sand surface
Bottom Printed Polyethylene foil or Sand (Q)

To order specify finish, reinforcement and thickness e.g. DULAS FP 200 4mm for foil finish, 200g/m² polyester reinforcement and 4 mm thick sheet membrane.

USES

  • Substructure waterproofing with deep foundations subject to high and/or fluctuating water tables.
  • External surfaces of underground water reservoirs, pools and other liquid retaining structures.
  • Floors of plaza decks, multilevel commercial and industrial complexes, buildings, etc.
  • Flat and pitched roofs, balconies, terraces, etc.
  • Re-roofing works to the existing structures.

METHOD OF APPLICATION

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.

Protection:  For relevant areas like Substructure waterproofing or Tanking etc, 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.

DULAS P membranes are also suitable for partially bonded or loose laid installation.

Contact the technical department of your local distributor for advice.

PACKING AND STORAGE

DULAS P membranes are supplied in rolls of 1m X 10m and shrink wrapped on pallets. Rolls must be kept upright on pallets under shade. DULAS P pallets should not be stacked one over the other.

HEALTH AND SAFETY

There are no direct health hazards associated with DULAS P membranes. Normal precautions for hot and volatile substances should be observed during application. Refer to our MSDS sheets for advice.

TECHNICAL DATA

PROPERTY UNIT TEST METHOD VALUE
COMPOUND PROPERTIES
Softening point [° C] ASTM D 36 ≥ 118
Penetration, @ 250C dmm ASTM D 5 25-35
Heat resistance, 2 hrs. @1000C ——- UEAtc No flow
Flexibility at low temperature [° C] DIN 52123 -5 to -7.5
Water absorption % ASTM D 570 <0.4
MECHANICAL PROPERTIES
Type of carrier g/m2 Spun-bond Polyester Mat
180 200 250
Tensile strength  (L/T) [N / 5 cm] UEAtc 750 / 650 900 / 700 1050/850
Elongation  (L/T) [%] UEAtc 40/45 45/50 50/55
Tear resistance (L/T) N UEAtc 220/235 230/245 250/265
Puncture resistance        Static

Dynamic

——— UEAtc LStatic @ 25 Kg

I3 Dynamic @ 9 Joules

In accordance with the standard upto 20% variation is expected

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 labor involved are beyond our control.

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