tinted safety yellow, the cap is screwed onto the head to ensure the pipe is secure even in harsh conditions such as high winds and seismic events. An optional slip-resistant KnucklePad can be added to the base to reduce movement and protect the roof membrane
GREEN LINK Adhesive/Sealant can be used by itself to form a bond of up to 275 psi shear strength. This prevents movement of the supports caused by equipment vibration, high winds or seismic events.
KnuckleHead installations have been performing in the field for more than 15 years with continual exposure to high temperatures, freeze-thaw cycles, UV exposure and stress, and they have shown no signs of deterioration.
GREEN LINK Adhesive/Sealant is environmentally safe and presents no toxic risk to contractors or building occupants. It is solvent-free, isocyanate-free, non-flammable and odorless.
A 10-year warranty is available. Please contact GREEN LINK for details.