Screw Down Snow Guards
Exposed Fastener Metal Roof Snow Guards
Screws down through the roof, attaching to the purlin below.
Can be mounted to wood or metal purlins.
The most secure snow guard method of attachment.
Lowest snow retention maintenance cost.
Screw-down snow guards are used to prevent snow and ice from sliding off sloped metal roof panels that have exposed fasteners. They are designed for mechanically fastening through the roof into wood or metal purlins using roofing screws with neoprene washers. The screw should always be at least a quarter inch thick; never use an undersized screw to fasten a snow guard.
The most common screw-down snow guard is the polycarbonate snow guard. They are so popular because there are no dissimilar metal reactions between the roofing panels and the snow guards. The SnoCleat PBR is an example of a screw-down pad-style snow guard made of aluminum and designed for PBR, R panels, or Ag panels. It features pre-drilled holes for easy fastening and a foam gasket for sealing under the snow guard. The foam pad eliminates the need for a liquid sealant. Another example of a screw-down roof panel snow guard is the stainless-steel SnowCatcher. Metal snow guards are not recommended for adhesive mounting and are not intended for use in isolated areas such as just around chimneys, over doorways, and in front of roof vent pipes.