This calculator is for general estimation only and is purposed to provide Sno-Safe snow guard layouts for rectangular roof areas. If you have a triangle-shaped roof area, please divide the measurements by half for more accurate quantities.

Warranties regarding the integrity of the installation of Sno-Safe snow guards must be the responsibility of the parties performing the installation. The ability of the roof to hold snow loads is the responsibility of the structural designer and builder in compliance with local codes.

Any guaranteed retention calculations would need to be performed by a structural engineer/architect intimately familiar with the snow conditions for the geographic area and the properties of the typical snow falls for the area. The shear strength of our guards can be relied upon for such calculations but the weak point is always going to be the quality of the installation by the contractor.