KnuckleHeads provide rooftop support for HVAC equipment, pipes and conduit and offer a number of advantages over traditional wood sleepers.
KnuckleHeads are molded from reinforced nylon, feature a round base so that weight is more evenly distributed and are virtually unaffected by weather and seasonal cycles. Each KnuckleHead unit can support up to 600 pounds and can be adjusted for height. And while units are typically loose laid, they can be bonded, mechanically fastened – or both– to the roof when additional stability is needed due to high winds or seismic conditions.
Additionally, custom engineered accessories are available that can enhance the installation including the ability to increase heights of the individual KnuckleHeads by using extensions that fit into the base. Flexible polyurethane slip pads under the base can be added to protect the roof membrane and prevent the unit from sliding and caps and straps can be used to secure pipes and struts in the heads.
KnuckleHeads are also environmentally safe and can outlast the life of the roof itself. They do not contain chemicals that can leach out from weathering or repeated exposure to water which can be a concern with treated lumber used in wooden sleepers.