The toxic top:  The environmental and structural risks of treated lumber supports on rooftops.

The market has been shifting away from treated wood blocks for rooftop support of pipes, HVAC equipment, and ductwork, etc., largely because they are subject to biodegradation—in other words, rot.  When the sleepers deteriorate, they cause pipe sag and unbalanced HVAC equipment which shortens operational life.  But there are other issues—critical ones---for moving toward other [...]

By |2020-11-02T13:44:58-05:00November 2nd, 2020|Knuckleheads, Nylon, Roofing Materials|Comments Off on The toxic top:  The environmental and structural risks of treated lumber supports on rooftops.

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.

KnuckleHeads Prevent Split Tip-overs in High Winds

KnuckleHeads Prevent Split Tip-overs in High Winds Roof-mounted heat pump splits are often attached to 4’ X 4’ treated wood beams, which are loose laid on the roof membrane.  While this has been common practice for many years, the emergence of taller “double stacked” units has created a new problem:  “wind sailing.”  Contractors and building [...]

By |2020-11-02T13:46:20-05:00November 22nd, 2019|HVAC, Roofing Materials, Support, Wind Uplift|Comments Off on KnuckleHeads Prevent Split Tip-overs in High Winds

How To: Build a Custom KnuckleHead Extension

FOUR STEPS TO MAKE A KnuckleHead EXTENSION* KnuckleHead Extensions should be used with our product to elevate equipment and pipes above the adjustable height range of a base model KnuckleHead.  Green Link provides extensions of 8, 12, and 18 inches. If you want to make your own size extension the following are the steps to [...]

By |2019-07-29T14:25:49-05:00May 17th, 2019|extension, HVAC, Knuckleheads, Roofing Materials, Support|Comments Off on How To: Build a Custom KnuckleHead Extension
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