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Bonding Adhesive

The Polygomma™ Bonding Adhesive (BA) is specially designed to splice the joints and to bond the Polygomma™ EPDM Roofing Membranes and Polygomma™ EPDM Pond Liners to various substrates in case of full bonding.

Applications

  • Clean the surface thoroughly to remove any dirt, etc. Ensure that the surface to be bonded is clean and dry.
  • Buff the splice joints/surface of membrane that needs to be bonded – Very important.
  • To apply Polygomma™ BA, pour the adhesive on the membrane/substrate and then spread with the use of a rubber blade/wiper, to ensure maximum coverage. Make sure that Polygomma™ BA is applied evenly on the entire area of both the surfaces (membrane and substrate) and allow it to dry for 5-10 minutes.
    • Polygomma™ BA can be applied on overlap joints using a brush.
  • Join both the surfaces and press well to get a strong and perfect bond.
  • Keep a roller handy and move it over the freshly bonded surface, to ensure that there are no bubbles or trapped air.
  • It is recommended to keep some weight on the bonded surface to get best results. Make sure that the weight does not damage the membrane.
  • Heat of 60 °C (for few seconds) on bonded surface by Hot air will enhance bond strength to great extent.
  • Please note that the maximum bond strength will occur after 24-48 hours, once the Polygomma™ BA is completely cured. The time taken depends on the porosity of the surface.

Coverage**

  • 25-30 SFT/Litre

Characteristics (When Packed) Range
Base Synthetic Rubber
Type Rubber Contact Adhesive
Product Description Rubber Adhesive
Colour Dark Brown
Odour Mostly Hydrocarbon
Solid Content 23±1
Specific Gravity 0.82
Viscosity 2000-2200 cps (Brookfield Viscometer No 3@20 rpm)
Shelf Life 12 months from date of manufacturing
Caution Keep away from heat and flame

Packing

30 litres


Shelf Life

12 months from date of manufacturing, if stored properly.


Precautions

  • Stir well before use
  • The lid of the container must be closed tightly and should be stored in a covered shed, away from direct sunlight.
  • Apply and use in dry conditions.
  • The Polygomma™ Bonding Adhesive (BA) should always be applied on an area of the EPDM membrane which is buffed.
  • Caution: The Polygomma™ BA is hydroscopic and flammable. Please take the necessary precautions during transportation, storage and use.

** The indicated coverage is an approximate for 2 coats (1 on the membrane and 1 on the substrate) of the bonding adhesive. This may change from site to site depending on the quality of the substrate and the applicator/contractor.


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