KnuckleHead Lite Pipe Support System
KnuckleHead Lite Pipe Supports are designed for a wide variety of roof applications including PVC, condensation pipes, electrical conduit and other types of lines. The KnuckleHead Lite Pipe System can support a single 1.315-inch outside diameter pipe (1-inch nominal) or two 0.840-inch outside diameter pipes (1/2-inch nominal).
Each KnuckleHead can support up to 600 lbs. Units can be spaced to evenly distribute the load of the heaviest equipment. KnuckleHead extensions are available for raising roof-mounted pipes and equipment to higher elevations up to 18”. Lite Pipe KnuckleHeads are lightweight, so they add little to the total roof load, preventing low points and depressions that invite ponding water and ice build-up
Lite Pipe KnuckleHead supports a single 1.315-inch outside diameter pipe or two 0.840-inch outside diameter pipes
Height is adjustable by rotating head-total height ranges from 2” to 3.2” elevation
- Each KnuckleHead is able to support up to 600 lbs.
Molded from GREEN LINK glass-reinforced nylon resin, which has metal-like properties
Strong, tough, weatherproof, impervious to freeze-thaw cycles
- Matte-finish nylon allows bonding with adhesive
- Base designed for adhesive attachment or mechanical fastening for seismic/wind uplift specification
The Universal Base can be loose-laid or attached using adhesive and/or screws
Tough polymer KnuckleCaps keep pipes secure
KnucklePads protect the roof membrane and reduce movement resulting from equipment vibration and wind
Important Points About The KnuckleHead Support System
KnuckleHeads prevent damage to the membrane caused by ponding water, wind, ice, flying debris, or seismic events and protect the integrity of roof-mounted structures and equipment. GREEN LINK can custom-cut metal struts, or design and manufacture special support elements such as a custom-molded base pad for a corrugated metal roof.
They are engineered with a Universal Base that can accommodate a range of head designs depending on the particular support application needed.
KnuckleHeads can be loose-laid or attached directly to the roof either mechanically and/or with GREEN LINK Adhesive/Sealant.
The Universal Base is designed with four holes at its center for accepting mechanical fasteners. Before penetrating the roof membrane, the contractor should consult with the manufacturer to ensure that the warranty is not voided.
Securing the Installation: The KnuckleHead Lite Pipe Support comes with a custom-engineered KnuckleCap. Molded from tough, weatherproof polymer and tinted safety yellow, the cap is screwed onto the head to ensure the pipe is secure even in harsh conditions. 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.
When mechanical fasteners are used, GREEN LINK Adhesive/Sealant should be applied across the bottom of the base on each screw head to prevent roof leaks caused by penetrations.
The base features 16 holes, allowing adhesive to squeeze out as the base is pressed onto the roof surface. This creates “adhesive rivets” which strengthen the bond.
KnuckleHead installations have been performing in the field for more than 20 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.