MGX NOR
ASPHALT MEMBRANE WITH POLYETHYLENE OF HIGH DENSITY ASSEMBLY
Characteristics
Megaflex Putty Asphalt Membrane with central assembly of high density assembly which gives better elasticity without resigning dimensional uniformity. It has a superficial coating of polyethylene in both sides that works as an anti adherent film. Because of the elastic characteristics this is the ideal product to be applied in waterproofing under floor or inside a system.
Recommended Uses
Suitable for waterproofing on surfaces where the membrane is not exposed to the elements, since it is applied under another element of the system, taking into account the warnings so as this element does not damage the membrane. The building of this kind of systems offers better security, endurance and longer useful life of the product.
Some examples of this product are: In tile floors and terraces where the waterproofing is solved with an under coating membrane. Systems under tiles or other coverage. In double membrane waterproofing.
Also in roofs with remarkable slope (for example under tile or under metallic sheet) as a reinforcement of waterproofing, etc.
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Recommended Uses Asphalt Membranes Exposed non passable MGX NOR |
Advantages:
- Specified for under system waterproofing
- Suitable to be applied as a reinforcement of the waterproofing giving better security to the waterproofing system
- Excellent crub with concrete mortars (before applying a concrete mortar the anti adherent polyethylene must be melted using a membrane torch)
Warnings and Precautions
Rolls should be stored in interior places where they are not exposed to sun rays, rain or temperatures of less than 5ºC or above 35ºC. They should be taken only in the moment of using them.
The rolls will be stocked horizontally (in a pyramid way) up to a height of 5 rolls.
Ideally these products should be located on site at least two hours before their application, so as to ensure a balance with the ambient temperature and humidity. At room temperature about 5ºC special care will be taken when laying the roll, unrolled it slowly to avoid cracks, tears or other damages.
It is not advisable the applying of the membranes when the ambient temperature is less than 5ºC (41ºF).
The work must not be made with rainy weather and it will not be renewed until the surface is completely dry.
It is advisable to have carbon gas or chemical dust fire extinguishers to countateract possible fire focus which could be produced during the application step.
Packing
In rolls of 10 m2 (1 m width per 10 m length).
MGX NOR membranes are introduced in the following range:
- MGX NOR 450 – Normal Membrane of 40 Kg.
- MGX NOR 400 – Normal Membrane of 35 Kg.
- MGX NOR 350 – Normal Membrane of 30 Kg.
- MGX NOR 300 – Normal Membrane of 25 Kg.
- MGX NOR 250 – Normal Membrane of 20 Kg.
- MGX NOR 200 – Normal Membrane of 14 Kg.
Application Method-(Standard IRAM 12627):
To ensure a correct waterproofing it is essential to follow the steps of application which are detailed below:
- SURFACE PREPARATION: The surface where the membrane will be applied must be dry, clean, flat, stable, even, smooth and must have the necessary ways to drain the water it will receive.
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PRIMING: Before applying the membrane the surface will be primed so as to improve the crub with the substrate. Megaflex Asphalt Primer (solvent base), Megaflex Asphalt Emulsion (watery base) or Oxidised Asphalt in cakes of application in heat, according to the characteristic of the work could be used.
The priming product is to be applied in an uniform way over the entire surface, including all extensions such as chimneys, airing elements, drainages and flashings. Allow to dry and check also for the cleanliness before applying the membrane.
- APPLICATION: The rolls will be applied continuously from the lowest side (drainage) to the highest side of the surface, applying the rolls in perpendicular direction to the slope of the surface. Start by applying the first roll in perpendicular direction, ‘the roll display’ will be made, checking its position on the area to be waterproofed, then it will be rolled again to start the bond.
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BONDING: Heat the surface of the membrane to be welded (anti-adherent) with welding torch, melting completely the anti-adherent and superficially the asphalt. Bond to the substrate by pushing softly.
- OVERLAPS: The following membranes’ layers will be applied superimposed up the direction of the overlapped slope, with an overlap no less than 8cm (3,2’’) in longitudinal sense. Roll endings must be overlapped 15cm (6’’). The Megaflex membranes have a welding strip to make easier the overlap.
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MAKING FLASHINGS: At last the making of flashings on the perimeters walls will be finished with double membrane around the wall and floor joints.
- ENDING: It is important to point out that this membrane is not suitable to be exposed to the elements.
Technical data
| PROPERTIES |
MGXNOR |
| Roll length |
10 m. |
| Roll width |
1 m. |
| Nominal Weight (kg)* |
14/20/25/30/35/40 |
| CoatingCentral Assembly |
Polyethylene High Density |
| Central Assembly |
Polyethylene High Density |
| Anti-adherent Film |
Polyethylene High Density |
| Heat Strength (2hs. 70ºC) IRAM 6693 Standard) |
Maximum Sliding 5% |
Folding (R=12.5mm 2hs. =ºC en 3 sec)
IRAM 6693 Standard) |
Test passed |
*Depending on the product presentation.
Components |
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Anti Adherent film
Asphalt layer
High Density Polyethylene
Asphalt layer
Anti adherent film
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