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ROOFING INSPECTION & REPAIR - home
AGE OF ROOFING
ASBESTOS & FIBER CEMENT ROOFING
ASPHALT ROOF SHINGLES - home
BEST ROOFING PRACTICES
BUILT UP ROOFS - home
CLAY TILE ROOFING - home
COLD WEATHER ROOF TROUBLE
DEBRIS STAINING on ROOFS
DECKS, ROOFTOP CONSTRUCTION
EPDM, RUBBER, PVC ROOFING
FIBER CEMENT ROOFING
FIBER-WOOD & FIBERBOARD ROOFING
FIRE RATINGS for ROOF SURFACES
FLASHING on BUILDINGS - home
FLAT ROOF MOISTURE & CONDENSATION
HAIL DAMAGED SHINGLES
HEAT TAPES & CABLES for ROOF ICE DAMS
HOT ROOF DESIGNS: UN-VENTED ROOFS
ICE DAM PREVENTION on ROOFS
ROOF DIAGNOSIS & REPAIR - home
LOW SLOPE ROOFING - home
MASONITE WOODRUF FIBERBOARD ROOFING
MEMBRANE & SINGLE PLY ROOFS
METAL ROOFING - home
MODIFIED BITUMEN ROOFING
NOISE CONTROL for ROOFS
PLASTIC ROOFING TYPES
PVC, EPDM, RUBBER ROOFING
ROLL ROOFING, ASPHALT
ROOF ARCHITECTURAL STYLES - PHOTOS
ROOF CLEANING RECOMMENDATIONS
ROOF COLOR RECOMMENDATIONS
ROOF INSPECTION SAFETY & LIMITS
ROOF NOISE TRANSMISSION
ROOF REPLACEMENT SNAFUs
ROOF SLOPE DEFINITIONS
ROOFING CONTRACTOR SELECTION
ROOFING MATERIALS, Age, Types
SLATE ROOFING - home
SNOW GUARDS & SNOW BRAKES
STAIN DIAGNOSIS on ROOFS
STANDARDS for ROOFING
STRESS SKIN INSULATED PANELS
TEST LABS - ROOF SHINGLE
TILE ROOFING - home
TRUSS UPLIFT, ROOF
TRUSSES, FLOOR & ROOF
UNDERLAYMENT REQUIREMENTS on ROOFS
VENTILATION, ROOF SPECIFICATIONS - home
WALK-ON ROOF SURFACES
WARRANTIES for ROOF SHINGLES
WIND DAMAGE to ROOFS
WOOD SHAKE & SHINGLE ROOFING - home
This article describes snow retention systems for smooth-surfaced roofs such as glass roofs, plastic roofs and metal roofs. We describe both glue-on snow guards and the types of clamp-on snow fences for these roof systems. Details include the glue-on snow guard installation steps, advice about using special adhesives, adhesive curing time & adhesive runout & tooling.
This article series illustrates types of snow guards or snow brakes or other snow retention devices used on metal, rubber, asphalt, and slate roofs and we explain and illustrate in photographs just how and where these devices are attached to building roofs. We give the reasons for snow & ice retainer use and their history.
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Metal or other smooth-surfaced roof snow guards are often installed by gluing the snow guard to the metal, glass or plastic roof surface in the center of pans between the standing seams. Berger and also SureBond both note that there it may be possible to install successful adhesive applications on other roof surfaces as well. 
It appears that the maintenance department has tried a variety of products on this roof, with mixed success.
Our second photo (below left) shows the same building roof in January 2013, with partial snow cover.
You can see these snow guards at work as they prevent snow and ice on the upper roof slope from sliding down and falling off at the roof eaves.
Step by step details for installing adhesive-type snow brakes or guards on metal, glass, or smooth plastic roofs are at SNOW GUARD GLUE ON INSTALLATION.
Excerpts are below. We agree with opinions encountered among roofers that it's better to glue snow guards to a metal roof (or use device that clamp to the standing seam) for two reasons:
Because of the problem of poor adhesion of the snow guard to the roof that later come loose or creep down the metal roof, manufacturers offer tips for a successful installation including
See SNOW GUARD GLUE ON INSTALLATION for complete glue-on snow guard installation details.
Step by step details for installing clamp-on -type snow brakes or guards on metal, glass, or smooth plastic roofs that include standing seams or similar ridges that serve as a mounting point are at SNOW GUARD CLAMP ON INSTALLATION.
Excerpts are below.
Two types of clamp-on snow brakes & guards are widely used on standing seam metal roofs: individual snow guards that clamp to the roof seam (below left) or horizontal snow brakes that use multiple clamps across the roof surface (below right). Some of these systems can also be adapted for plastic, glass or other smooth surfaced roofs if there are suitable mounting points in the roof structure.
At above left are metal snow guards clamped to the steams of a standing seam metal roof. These snow guards are not installed following the recommendations of some manufacturers who suggest their guards be glued to the pans centered between the standing seams, but this is a quick and easy installation approach.
Metal roofs using long horizontal snow bars or snow brakes (photo at above right) have these snow retention systems installed using clamps on individual standing seams.
Can these snow guard methods be used on other types of roofs? Yes.
See SNOW GUARD CLAMP ON INSTALLATION for complete clamp-on mechanically-attached on snow guard & snow brake installation details.
Watch out: What happens if you defer installing snow guards on a roof where they're needed? Take a look at SNOW GUARD FAILURES and at PLUMBING VENT REPAIR and you can see both damage and how that damage was later repaired.
Continue reading at SNOW GUARD GLUE ON INSTALLATION or select a topic from the More Reading links shown below.
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