Screw-Down Snow Guard Calculator
Select a SnoBlox-Snojax product and enter your roof measurements to estimate guard quantities, staggered placement, and reference costs. The preview is schematic and requires manufacturer review.
1. Product and roof information
Appears on your printed material estimate and roof layout pages.
2. Roof areas
Use this manufacturer-supplied measurement guide to identify the roof run, eave length, roof pitch and valley width.
1 of 8 areas
Screw-down snow guard spacing: common questions
These answers explain the calculator inputs and limitations. Layouts and material totals are preliminary planning estimates; confirm product compatibility and project-specific requirements.
How does roof pitch affect screw-down snow guard spacing?
The calculator uses these maximum vertical row spacings: 1/12–2/12: 25 ft; 3/12–4/12: 20 ft; 5/12–6/12: 10 ft; 7/12–8/12: 6 ft; and 9/12–12/12: 5 ft.
Which screw-down guards are not available for 9-inch flats?
IceJax II, SnoBlox Ace, Snojax II and SnoCleat 2.67 are excluded from the 9-inch flat selection in this calculator. Changing to an incompatible panel width triggers a warning.
Where should screw-down snow guards be fastened?
Use the approved fastener and structural substrate specified for the product and roof assembly. Do not rely on unsupported roof sheet material alone; verify the installation requirements.
Can multiple roof areas be included in one estimate?
Yes. Enter each eave length and roof run separately. The calculator totals the resulting material quantities and prints the individual layout diagrams.