Polyether Structural Adhesive/Sealant

GREEN LINK Adhesive/Sealant is a polyether-based, moisture-cure formula that has been used in the construction industry for many years. It has earned a reputation for high performance, adhering to a wide range of roofing membranes including PVC, EPDM, Mod Bit, and TPO (with primer) yielding a strong, long-lasting bond that exhibits excellent weathering characteristics.

GREEN LINK Adhesive/Sealant is 100% solids and it cures by contact with moisture—no evaporation of solvents, so there is no shrinkage as with many adhesives that lose as much as 30-40% of their volume once solvents evaporate.

GREEN LINK Adhesive/Sealant is entirely safe—no risk of fire, explosion, or toxic exposure to workers or building inhabitants. It meets the requirements of California Regs: CARB, BAAQMD, and SCAQMD. It does not contain cancer-causing chemicals listed in California Proposition 65. The VOC content is less than 25 per gram per liter.

  • Moisture cure
  • 100% solids — Will not shrink
  • Applies down to 32° F.
  • Environmentally safe.
  • No toxic risk to contractors or building occupants
  • Polyether Structural Adhesive/Sealant
  • Solvent-free, isocyanate-free, low-VOC content, odorless, non-flammable
  • Excellent weathering characteristics — remains elastomeric over many years
  • Bond strength – 275 psi
  • Adheres to common roof substrates and to KnuckleHeads
  • Plastic, waterproof cartridge

Important Points About The KnuckleHead Support System

GREEN LINK Adhesive/Sealant is a critical part of the KnuckleHead Support System because it functions as both an adhesive and a sealant and ensures the integrity and long life of the installation. As an adhesive, it provides up to 275 psi bond strength
between the Universal Base and single-ply membranes or built-up roofs. Additionally, it can be applied directly to the head as an optional approach to creating a stronger, more permanent installation of Strut KnuckleHead, Lite Pipe KnuckleHead, Heavy Pipe KnuckleHead, or Paver KnuckleHead.

GREEN LINK Adhesive/Sealant squeezed out of the base holes functions as “rivets,” which serve to attract moisture, speeding up the curing process. Also, when fully concealed mechanical fasteners are used to mechanically attach the Universal Base, GREEN LINK Adhesive/Sealant can be applied to the fastener heads to form a waterproof seal. It is so effective in this regard it can be used for emergency repairs where it can be applied directly in ponding water to seal a roof leak instantly.