The origin of the KnuckleHead Name

The first KnuckleHead At the turn of the century, it became evident that woodblocks, bricks and other improvised supports for rooftop equipment were no longer sustainable. The first engineered support system was designed by Dr. Tibor Keller, a master machinist. This component was capable of lifting and holding light pipes such as conduit, gas pipes [...]

By |2020-11-02T13:24:10-05:00November 2nd, 2020|Engineering, Knuckleheads, Support, Uncategorized, Wood Blocks|Comments Off on The origin of the KnuckleHead Name

Securing HVAC Equipment on Mod-Bit Roofs without Mechanical Fastening

Modified bitumen roofs continue to maintain a significant share of the domestic market.  Mod bit is often described as “rubberized” asphalt, meaning it consists of asphalt and a polystyrene or polypropylene polymer infused into a reinforcing fabric.  It is applied in 4’ squares as a two-ply system: first a base sheet, then a top sheet [...]

By |2020-11-02T13:07:38-05:00November 2nd, 2020|HVAC, Knuckleheads, Roofing Materials, Support, Uncategorized|Comments Off on Securing HVAC Equipment on Mod-Bit Roofs without Mechanical Fastening

Tall VRFs/Mini-Splits: Blowing in the Wind? Here’s an Answer.

Mini splits are becoming increasingly popular on commercial buildings as well as residential housing. Usually, they can be mounted on any number of support systems, but the taller, narrower profile of the larger units creates a level of vulnerability. In windy conditions, it can tip over, even if mounted. The greater surface area of the [...]

By |2020-11-02T12:35:05-05:00November 2nd, 2020|Engineering, HVAC, Knuckleheads, Roofing Materials, Uncategorized, Wind Uplift, Wood Blocks|Comments Off on Tall VRFs/Mini-Splits: Blowing in the Wind? Here’s an Answer.

Case Study: A Public School in Michigan

Clearing the Way for Coating A public school roof in central Michigan, was scheduled to be resealed with a liquid applied coating.  Two adjacent roof sections were involved separated by a parapet wall over which line sets needed to pass.   Prior to coating  five mini splits using 4”X 6” wood sleepers were mechanically fastened to [...]

By |2020-11-02T12:07:02-05:00November 2nd, 2020|HVAC, Knuckleheads, Nylon, Roofing Materials, Uncategorized, Wind Uplift|Comments Off on Case Study: A Public School in Michigan

KnuckleHeads and Hurricanes

Recently Green Link principals, Phil Georgeau, Founder, and Lisa Mulder, Technical Director traveled to San Juan, Puerto Rico to survey the destruction caused by Hurricane Maria, and to study how the use of the KnuckleHead support system could provide more stable rooftop installations in the face of future hurricanes. Hurricane Maria, which struck in [...]

By |2019-07-29T14:28:11-05:00July 2nd, 2019|HVAC, Knuckleheads, Nylon, Support, Uncategorized, Wind Uplift, Wood Blocks|Comments Off on KnuckleHeads and Hurricanes
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