Isolated Area SnowBreaker Snow Guard Calculator
Estimate SnowBreaker placement over an isolated doorway or other designated area. Unlike full-roof layouts, isolated-area rows expand horizontally with distance upslope. Do not use isolated rows as a substitute for complete roof snow retention where needed.
1. SnowBreaker and roof information
2. Isolated areas
Enter the roof run and protected doorway width for each isolated area. Doorway width defaults to 6 ft, as in your original calculator. Choose a roof pitch separately for each isolated area. Panel width and SnowBreaker attachment package apply to all areas.
1 of 8 areas
Isolated SnowBreaker placement: 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.
What is an isolated-area SnowBreaker layout?
It is a specialized layout that estimates SnowBreaker positions for a designated area such as a doorway, using the roof run, doorway width, roof pitch and panel width. It is different from a full-roof snow retention layout.
What is the maximum snow load for isolated placement?
For Adhesive and 3M Tape choices, this calculator limits ground snow load to 20 PSF. Screws and Sealant may be evaluated up to 45 PSF only with approved structural fastening and any necessary manufacturer or engineering review.
Where does the first row begin?
The working isolated-area layout places the first SnowBreaker row 1 foot upslope from the eave and calculates subsequent row offsets based on roof run and pitch.
Can I include more than one doorway?
Yes. Add separate isolated areas, each with its own roof run and doorway width. Review the area diagrams and overall material estimate before specifying an installation.