"POLY FLEX ™" Water Proofing Membrane
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 THE AMAZING PROPERTIES OF
 POLY FLEX EPDM WATER PROOFING FOR

 ROOFS OF ALL KIND
 POOL
 WATER - CHEMICAL CANAL LININGS
 WATER STORAGE TANK
 RESERVOIRS
 UNDER GROUND CONSTRUCTIONS

We at Poly Rubber Products have developed Special EPDM ROOF SHEETING Compound "POLY FLEX™ " L 3955 and adhesive Cover 3174
[under TECHNICAL COLLOBRATION WITH M/s. A. TAMBURINI & Co, ITALY], which confirms the "MINIMUM REQUIREMENTS FOR NON REINFORSED BLACK EPDM RUBBER SHEETS FOR USE IN ROOFING APPLICATIONS" as laid down by "THE RMA ROOFING COUNCIL" of U.S.A.

This Single-ply black membranes are light weight and has exceptional long lasting elasticity permitting the materials to withstand followings.

- Building movement.

- Expansion - Contraction of Building surface.

- High resistance to Ozone and weather as they are known as
   "Crackless Rubbers"

- Low Specific gravity - lightest among all rubbers.

- Widest Temperature range from - 50'C to + 150'C.

- Excellent Steam and Water Resistance.


These sheeting's are mainly used for Water Proofing in Roof, Swimming Pools, Foundations of any civil construction, soak pits for animal feed, gobar gas plant, total prevention of sub-soil water seepage in tanks, canals etc... as even after 20 years EPDM Roofing Material maintains good properties and appearance.



         MAIN ADVANTAGES OF "POLY FLEX™" EPDM WATER ROOFINGS
A. THE SUPERIOR PROPERTIES OF EPDM WATER PROOFING.
The life of any building is dependent of the designer recognising and considering all the factors relevant to its location, shapes, and function of the building. Reliable roofing is the most important part which devides the quality & ultimately the life of the building. An efficient roof sheeting should never allow even traces of water to pass through it at any given point and should maintain this characteristic over a long period of time. It should withstand slight moments of the structure, bad weather, chemical degradation and mechanical stress and strains.

EPDM is the perfect solution which meets the stringent requirement of good water proofing roof sheet. In the long run it is a more for more economical than traditional water proofing systems.


B. "POLY FLEX™" EPDM SHEET HAS MORE WATER PROOFING POWER THAN CONVENTIONAL MATERIAL.
EPDM sheet ( with a thickness of 1.2 mm) is 22 times more than asphalt and 59 times more water proofing than PVC sheet.

C. "POLY FLEX™" EPDM SHEET WILL TAKE THE "MOVEMENT" OF THE STRUCTURE:-
Since EPDM sheet can be stretched (approx. 400%), it will not tear , crack or split but returns to the original position, without damage to the membrane. The EPDM SHEET has an unfailing flexibility.

D. "POLY FLEX™" EPDM SHEET WITHSTANDS EXTREMES OF TEMPERATURE:-
Because of serviceability over a wide range of temperature ( -50 to + 150C), EPDM sheet does not embrittle in freezing weather nor soften in hot weather.

E. "POLY FLEX™" EPDM SHEET MINIMAL EXTRA LOAD ON YOUR ROOF:-
EPDM roof sheet is one of the highest roof membrane materials (with a specific gravity of approx. 1.15 kg/m). It is highly suitable for light weight structures and puts negligible extra load on roofs to be water proofed.

F. "POLY FLEX™" EPDM SHEET LASTS FOR MORE THAN 20 YEARS:-
Presently in our country, asphalt based coating is employed in many buildings to protect the roof from leaking. However, the life of such waterproofing is limited and the coating has been replaced every 2 to 3 years. Because of expansional water & weather resistance of EPDM, the roof sheets based on EPDM are known to last for more than 20 years.

G. LITTLE OR NO MAINTENANCE IS REQUIRED FOR THE EPDM WATER PROOFING SHEET:-
As the EPDM Rubber Sheet does not deteriorate due to weather, heat, sunlight and oxidation virtually no maintenance is required for the roof.

H. RESISTANT TO MOST OF THE ACIDIC AND ALKALINE CONDITIONS FOR WIDE RANGE OF TEMPERATURE:
As the EPDM rubber is highly saturated polymer, it has better chemical and environmental resistance than other available polymeric materials. This can be used in chemical plants for their drainage and canal systems to avoid seepage through the RCC / CONCRETE work which in turn can damage surrounding fields.

I. The following table shows the comparative properties of EPDM roof sheeting against other materials used for roof protection which indicates superiority of EPDM roof sheeting.

Properties EPDM Roofing PVC Roofing Modified Bitumen Roofing BUR Roofing (Bitumibous built up Roofing)
UV resistance E P-F F G
Ozone resistance E E F F
High Temperature resistance E E F F
Cold Crack E F-G P P
Resistance to Plastilizer Migration E F-G P P
Dimensional E P-F F F
Install over existing roof. Yes Yes Yes No.
NA = Not Applicable, E = Excellent, G = Good, F = Fair, P = Poor


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         THERE ARE MAINLY TWO SYSTEMS ARE ADVISED

EPDM roof sheets can be factory assembled from smaller width sheets by hot vulcanising into their correct positions to form as continuous water proof surface. Alternatively, the sheets can be site welded together like those made in factory.

As EPDM is elastic and tear resistant at low temperature, the EPDM roof sheets can be manipulated over pipes and curves in any weather and fit properly around such projections. Also as EPDM is UV resistant, it needs no solar protection althorough normal measures may be taken to reduce thermal transfer through the roof structure, i.e. insulation.

The roof surface or substrate must be clean and free from debris, chippings or either materials prior to the laying of EPDM roof sheet. If the surface is rough or uneven, an appropriate board or sheet material should be used to provide a smooth surface.


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"POLY FLEX™" EPDM ROOF CAN BE FIXED IN TWO WAYS.
1. BALLASTED i.e. sheet joint overlap bonding of 50mm. Ballasting is the quickest and most economical way to rescure EPDM roof sheets. In this case the original covering can be left in place. The ballasting method can be used for flat roofs upto a slope of 8.

In this method, the water-proofing sheet is simply fitted over the roof and fixed only at the perimeter with the help of contact adhessive. To prevent the covering from being lifted and blown away by strong winds, it is covered with ballsat. The sheet should be loaded with ballast immediately after laying. Ballast should be round, washed stone 20-40 mm diameter (usually rounded river washed pebbles are used for this purpose).

The ballast weight should be calculated by taking into consideration the design permissible loading capacity of roof.


2. FULLY ADHERED SYSTEM: Bonding is appropriate when structures are too light or roofs are too steep for ballsting. This method can be bonded to smooth wood, concrete, steel, aluminum, rigid insulation, clean and free of Oil, Grease or other contaminants.

In this method , the main area of covering is bonded to its substrate with slow curing adhessive . The surface regularities of the old roof must be removed before applying the covering.

First the roof sheet is placed with in proper position , and adhessive is pured directly from the container or is applied with the brush or roller . The rubber sheet is than unrolled over the fresh adhessive layer and is roller worked until it is flat and free of wrinkles.


SO IF YOU ARE LOOKING FOR A STRONG. FLEXIBLE WATER PROOF SYSTEM OR FOR ANY WATER PROOFING CONSULTATIONS KINDLY CONTACT OUR TECHNICAL DEPARTMENT. 


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