856 Prem SBS Adhesive

TAM-PRO® 856 Premium SBS Adhesive

A proprietary formulation consisting of select roofer’s flux asphalt, prime quick-setting VOC-compliant petroleum solvents, reinforcing minifibers and styrene-butadiene-styrene (SBS) rubberized polymers blended to a brush/squeegee-grade consistency.

TAM-PRO® 856 Premium SBS Adhesive

Asbestos Free

  • Excellent bonding strength over a wide temperature range
  • SBS-modified bitumen roofing system is allowed to expand and contract equally
  • 100% Asbestos Free
  • Used to adhere SBS-modified bitumen membranes to the substrate, typically a coated fiberglass base sheet
  • The substrate to receive the adhesive must be smooth. Irregularities may cause voids, thus inhibiting proper bonding
  • Apply with a stiff-bristle brush or preferably, a notched squeegee
  • 1.5 gallons per 100 square feet
Notice: This product is sold "AS IS" and without warranty of any kind, express, implied or statutory, including but not limited to the implied warranties of merchantability and fitness for a particular purpose.

856 Premium SBS

Application Instructions

  • As in all roofing systems, proper membrane lap construction is critical. It is essential the laps receive the proper amount of adhesive, and a slightly thicker application rate in these areas is acceptable
  • Ensure the adhesive is visible at all completed lap edges and ends. Once laps are adhered, gently roll or press the laps to ensure good bonding. CAUTION: Too much pressure on the roller may force adhesive out and cause premature system failure. Alternately, lap seaming by hot-air welding may be acceptable; consult the membrane manufacturer
  • In addition to adhesive, backnailing is required of the SBS-modified bitumen membrane on steep roof slopes. Some SBS membrane manufacturers may require backnailing at lower slopes. Check membrane manufacturer's application recommendations
  • DO NOT HEAT! DO NOT THIN
  • Excessive foot traffic on recently applied systems may cause voids, poor bonding or premature system failure
  • Excessive adhesive application (greater than 1.50 gallons per 100 sq. ft.) may cause membrane blisters, slippage and/or granule loss
  • Application at 50°F or less inhibits drying time and may inhibit proper bonding
  • NOT FOR USE with APP (atactic polypropylene) or membranes that have a plastic or polyethylene backing

Data Sheets

MSDS

Certifications

Applicable Standards

  • UL Classified
  • ASTM D 3019, Type III. CGSB 37-GP-56M, UL Classified,
  • ASTM D 3019 requires minimum bond strength of 4.25 lb./in. after 24 hours.

Additional Certification

856 Premium SBS

Brochure

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