How do snow guards work?

Snow Rails

This type of snow fence system will be placed in a straight line, sometimes in several sequences going up the roof, to prevent snow avalanches on sloped metal roofs.

Individual Pad-Style Snow Guards

These types of snow catchers should always be installed in staggered formations across the entire roof to act as fingers to grip the snow and ice. These types of snow guards can be mounted with screws or adhesive. Never run individual snow guards in a straight line, or it will defeat their purpose and waste money through misapplication.

Clamp On Snow Guards

Clamp-on snow guards are an excellent option for buildings with a floating standing seam metal roof. This type of snow guard does not penetrate the roof but is mechanically attached to the seam, which provides adequate holding strength. The main advantage of this product is that it can be installed at any time of year.

These snow guards typically clamp onto a metal roof's standing seam without penetration, and there is no need for glue or sealants during installation. Furthermore, some clamp-on snow guard products, like the SnoCleat, include unique features like a swivel bracket for angle adjustment in hips and converging valleys.

Choose the Right Attachment Method

Adhesive Mounting:

Polycarbonate snow retention can typically be attached to any type of metal roof using adhesive. Polycarbonate snow guards mounted with SureBond SB-190 is the only time-proven option for gluing guards down. A reputable company will publicly publish their test results for this type of application. Many people prefer this method because the snow guard will not cause damage to the roof panel if it comes off. If the system has become overloaded, an adhesive-mounted snow guard can be easily reinstalled in the same location on the roof.

Screw Down Installation:

Mechanically attached snow guards work best on roofs with exposed fasteners. The snow guards should never be stitched to the panel itself; they must be attached to at least a 1-inch substrate for wood. If your building has steel purlins, the snow guards should be attached to them with at least two self-drilling screws. The screws should always have a rubber neoprene washer installed under the head. Mounting snow guards with screws is the strongest method if there is adequate substrate under the panels for attachment. The roof system must be able to accept roof penetration without voiding any warranties.

Clamp on Attachment:

Snow guards must be crimped to the seam with a clamp on a concealed fastener roof. This type of roof covering is commonly called a standing seam metal roof. The clamp method is recommended to avoid unnecessary roof penetration. It is important to note that if there is not an adequate amount of snow retention used, seam damage may occur if the system is overloaded.

Follow Manufacturer's Spacing and Installation Instructions