Sarnacol® T-660

Butyl rubber-based solvent-containing one-pack contact adhesive

15 months from date of production if stored properly in original, unopened and undamaged sealed container. Expiry date on container.

Store in dry conditions at temperatures between +5 °C to +30 °C

~0.79 kg/l (+20 °C)

Liquid

5 °C min.

• Concrete, lightweight concrete, brick, plaster
• Oriented strands fibre (OSB) boards, plywood panels
• Fibre cement boards
• Aged bitumen
• Mineral fibre boards with sufficient compressive strengths and appropriate surface for bonding
• PUR/PIR insulation boards with lamination (glass or mineral fibre fleece and coated aluminium)
• Polyester (thermal activation required), hard PVC
• Galvanized steel, aluminium, nickel chromium steel

The strength required for the intended stress is achieved immediately. Final strength is achieved after approximately 1 week and depends on the temperature and humidity.

Consumption depends on the roughness and absorbency of the substrate and ranges from 300 g/m² - 500 g/m² on closed substrates to 1000 g/m² on very absorbent substrates.

The substrate must offer sufficient strength and adhesion to resist the forces generated by wind suction.

The substrate must be resistant to solvent, firm, clean, dry, free of stripping agents and free of oil and grease. Sheet metal must be cleaned with Solvent T 660 before adhesive is applied.

Application Guideline:

Based on the valid installation instructions of the relevant roof waterproofing membrane.

General Information:

Sarnacol® T-660 must be stirred well and carefully before use. Close the container if work is stopped for a long period. Sarnacol® T-660 can be diluted with Solvent T 660 to adjust fluidity. Use Solvent T 660 to remove adhesive residues on the roof membrane.

General principles for bonding (contact bonding):

The adhesive is spread evenly to the substrate, preferably using a roller. Do not apply the adhesive to an area greater than can be covered in one day. Allow the adhesive to dry completely. The minimum evaporation time is 2 hours, the maximum 10 hours. Apply two coats of adhesive on absorbent substrates (the first coat must have dried out completely before the second is applied). Apply the adhesive evenly on the underside of the roof membrane, preferably using a roller (welding seam overlap area must be free of adhesive). Once the adhesive has been allowed to evaporate sufficiently (finger test after approximately 30 minutes), position the roof membrane, straighten it, bond it and press it down well with a roller. The time to be allowed for evaporation depends on the temperature, air humidity, condition of the substrate and quantity of adhesive.

Heat activation:

After bonding, the adhesion is generally improved by warming up the roof membrane. Therefor the roof membrane is heated externally by means of a heat source for example Sarnafil® heat gun and pressed down immediately using a roller. Avoid any glossing on the roof membrane, particularly in the area of the welding seam overlap.

Tools and equipment must be cleaned with Solvent T 660 immediately after use.