Screw-Down SnoBar
SnoBar is the steel snow rail option for exposed-fastener metal roofs. It is commonly selected for demanding snow retention applications where a heavy-duty steel rail is preferred.
Learn About SnoBarExposed-Fastener Metal Roof Snow Retention
Screw-Down Snow Rails for Exposed-Fastener Metal Roofs
SnoBar and ColorBar screw-down snow rail systems attach through compatible exposed-fastener metal roof panels into structural support. Compare steel and aluminum rail options, review Tall ColorBracket and 2.67 corrugated bracket attachment, use calculators, and request design help before ordering.
What Are Screw-Down Snow Rails?
Screw-down snow rails are bar-style snow retention systems designed for compatible exposed-fastener metal roof panels. These systems use brackets and fasteners to attach through the roof panel into structural support beneath the panel.
SnoBar and ColorBar are SnoBlox-Snojax snow retention systems used for metal roof snow and ice control.
Quick answer: Screw-down snow rails are snow retention systems for exposed-fastener metal roofs. They fasten through the metal roof panel into structural support and are commonly used when clamp-on standing seam attachment is not applicable.
The correct screw-down system depends on panel profile, rib spacing, corrugation spacing, roof pitch, roof run, horizontal eave length, structural attachment, snow load, roof geometry, and the areas below the roof edge.
Who Should Use Screw-Down Snow Rails?
Screw-down SnoBar and ColorBar systems are intended for compatible exposed-fastener metal roof panels where brackets can be fastened through the panel into purlins, decking, or other approved structural support.
Screw-Down SnoBar and ColorBar Options
Both systems are available for compatible exposed-fastener metal roofs. Tall ColorBracket options are used on many ribbed panels, while the 2.67 screw-down bracket is used for compatible 2.67 corrugated roof panels.
Screw-Down ColorBar
ColorBar is the structural aluminum snow rail option for exposed-fastener metal roofs. It is often selected for clean appearance, color-matching options, and aluminum rail construction.
Learn About ColorBar
2.67 Corrugated Screw-Down
The 2.67 screw-down bracket is made for compatible 2.67 corrugated metal roof panels. It allows SnoBar and ColorBar snow rail systems to be attached through the corrugated panel into structural support.
View Bracket OptionsScrew-Down Bracket Attachment
Screw-down systems rely on the correct bracket, fastener, panel location, and structural attachment. Brackets should be fastened into approved structural support, not simply into unsupported sheet metal.
Structural Fastening
Screw-down snow rail brackets attach through the metal roof panel into structural support such as purlins, decking, or another approved substrate based on the roof assembly.
Tall ColorBracket
Tall ColorBracket options are used for compatible exposed-fastener ribbed panels where the bracket layout fits the panel flat and the fasteners can reach structural support.
2.67 Corrugated Bracket
Designed for compatible 2.67 corrugated metal roof panels, the 2.67 screw-down bracket mounts over the corrugated profile and must be fastened into structural support below the panel.
One-Bar and Two-Bar
Some roof conditions may require a two-bar screw-down system depending on roof pitch, run length, snow load, and project-specific layout requirements.
Structural attachment is critical. Verify the panel profile, purlin or decking location, fastener type, bracket spacing, corrugation spacing, and project conditions before ordering or installing a screw-down snow rail system.
Screw-Down Snow Rail Comparison
Use this comparison to decide whether SnoBar or ColorBar is the better starting point for an exposed-fastener metal roof project.
SnoBar is the steel rail option. ColorBar is the aluminum rail option. Both use screw-down bracket attachment on compatible exposed-fastener metal roofs.
| Feature | Screw-Down SnoBar | Screw-Down ColorBar |
|---|---|---|
| Rail Material | Galvanized steel, with stainless steel options available for selected applications | 6061-T6 extruded aluminum |
| Roof Attachment | Bracket-mounted through the panel into structural support | Bracket-mounted through the panel into structural support |
| Bracket Options | Tall ColorBracket for compatible ribbed panels and 2.67 bracket for compatible 2.67 corrugated panels | Tall ColorBracket for compatible ribbed panels and 2.67 bracket for compatible 2.67 corrugated panels |
| Roof Penetration | Yes, fasteners penetrate the roof panel and must attach into structural support | Yes, fasteners penetrate the roof panel and must attach into structural support |
| Appearance | Square steel snow bar with color-matching options | Clean aluminum rail appearance with color-matching options |
| Color Matching | Available through selected powder-coated finish options | Optional 2-inch ColorStrips or powder coating options |
| Continuous Bar Run | Rail ends butt together with proper expansion space | Uses aluminum splice connectors for continuous snow rail runs |
| Best Fit | Exposed-fastener roof projects where a square steel snow rail is preferred | Exposed-fastener roof projects where strength and clean appearance are desired |
Need a Screw-Down Snow Rail Layout?
Screw-down snow rail layouts should be based on roof pitch, panel profile, rib spacing, corrugation spacing, horizontal eave length, roof run, snow load, roof geometry, structural support locations, and pedestrian or vehicle areas below.
Send the project information before ordering if you are unsure which rail, bracket, row spacing, fastener, or accessory combination is required.
Screw-Down Snow Rail Calculator
Use the screw-down snow rail calculator before estimating quantities. Calculator results are planning estimates only and should not replace project-specific layout review.
Screw-Down Snow Rail Calculator
Estimate rows, 6-foot kit quantities, and layout requirements for compatible exposed-fastener and 2.67 corrugated metal roof SnoBar and ColorBar systems.
Use Screw-Down CalculatorShop 6-Foot Kits
Standard SnoBar and ColorBar 6-foot kits can be ordered online through the SnoBlox-Snojax website for projects that fit standard kit applications.
Shop Kits OnlineRequest Layout Review
Request help when roof geometry, snow load, panel profile, structural attachment, upper roof areas, or pedestrian hazards need project-specific review.
Request Design HelpSnow retention should be designed for the full roof area contributing sliding snow. Do not isolate snow rails only above doors, walkways, vents, or other small areas. Upper roofs should be addressed before lower roofs when snow can shed from one roof area onto another.
Screw-Down Installation Resources
Review the correct installation instructions for the roof type, bracket style, and system layout before ordering or installing screw-down SnoBar or ColorBar snow rails.
Screw-Down Snow Rail Instructions
Use these instructions for SnoBar and ColorBar systems installed on compatible exposed-fastener metal roofs with screw-down brackets.
2.67 Corrugated Bracket Spacing Layout
Use the 2.67 screw-down bracket when the exposed-fastener roof is a compatible 2.67 corrugated panel. Confirm corrugation spacing, support location, and fastener requirements before installation.
Two-Bar Screw-Down Instructions
Use these instructions when the exposed-fastener roof layout requires a two-bar SnoBar or ColorBar screw-down system.
Need Clamp-On Instead?
If the roof is a standing seam panel, use the standing seam snow rail page and clamp-on installation resources instead of screw-down attachment.
Screw-Down Snow Rail FAQ
What are screw-down snow rails?
Screw-down snow rails are bar-style snow retention systems that attach through compatible exposed-fastener metal roof panels into structural support. They help control sliding snow and ice on ribbed and exposed-fastener metal roofs.
Do screw-down snow rails penetrate the roof?
Yes. Screw-down SnoBar and ColorBar systems fasten through the roof panel into structural support below the panel.
Can SnoBar and ColorBar both be used on exposed-fastener roofs?
Yes. SnoBar and ColorBar can both be configured as screw-down snow rail systems for compatible exposed-fastener metal roofs when the brackets, fasteners, and layout are properly specified.
Which screw-down snow rail should I choose?
SnoBar is the steel snow rail option. ColorBar is the structural aluminum snow rail option with several color-matching choices. The better fit depends on appearance requirements, roof panel profile, structural attachment, layout, and project conditions.
Do screw-down snow rails need structural support?
Yes. Screw-down snow rail brackets must be fastened into appropriate structural support such as purlins, decking, or another approved substrate based on the roof assembly and project requirements.
What bracket is used for 2.67 corrugated metal roof panels?
Compatible 2.67 corrugated metal roof panels use the 2.67 screw-down ColorBracket option for SnoBar and ColorBar snow rail systems. Confirm the roof profile, corrugation spacing, and structural fastening location before ordering.
Ready to Choose a Screw-Down Snow Rail System?
Compare SnoBar and ColorBar, use the screw-down calculator, review installation instructions, or request project-specific design help before ordering.