SPECIFICATION COMPLIANCE
DUPLAS AP membranes exceed the requirements of ASTM D6222, UEAtc and other relevant international standards.
QUALITY ASSURANCE AND WARRANTY
Duproof is an ISO 9001 Quality Assured company, and DUPLAS AP membranes 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 | APP – modified bitumen | |
| Carrier | 180 g/m² | |
| Top surface | Alkali proof Aluminum foil | |
| Bottom surface | Printed Polyethylene foil |
To order specify finish, reinforcement and thickness e.g DUPLAS AP 200, 200g/m² polyester reinforcement and 4 mm thick sheet membrane with Alkali proof Aluminum Foil on the top.
USES
- As a capping layer in waterproofing systems.
- Where reflectivity is required.
- As a base flashing over the parapet.
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 joints.
PACKING AND STORAGE
DUPLAS AP membranes are supplied in rolls of 1X10M, shrink wrapped on pallets. Rolls must be kept upright on pallets under shade. DUPLAS AP pallets should not be stacked one over the other.
HEALTH AND SAFETY
There are no direct health hazards associated with DUPLAS AP 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 | 150 |
| Penetration, @ 250C | dmm | ASTM D 5 | 14 – 21 |
| Heat resistance, 2 hrs. @1100C | ——- | UEAtc | No flow |
| Flexibility at low temperature | [° C] | DIN 52123 | -2 to -5 |
| Water absorption | % | ASTM 570 | < 0.4 |
| MECHANICAL PROPERTIES | |||
| Type of carrier | g/m2 | Spun bond Polyester mat | |
| 180 | |||
| Tensile strength (L/T) | [N / 5 cm] | UEAtc | 750/650 |
| Elongation (L/T) | [%] | UEAtc | 40/45 |
| Tear resistance (L/T) | N | UEAtc | 200/225 |
| Puncture resistance Static Dynamic | ——— | UEAtc | L4 Static @ 25 Kg I3 Dynamic @ 9 Joules |
Note: These data are correct at the time of printing but may be changed without any prior notice subject to clients requirements availability of raw materials or other conditions. This data sheet supercedes all previous publications pertaining to this product. All reasonable care has been taken in preparing this document which to the best 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.
