Here s a simple rule for deciding.
Remove snow from roof or not.
Hellevang advises using a roof rake which allows a person to remove snow while standing on the ground.
Some snow rakes have rollers that keep the rake just above the shingle.
If using a shovel.
Use plastic roof snow removal.
If you must get on the roof call a professional.
If you can remove the snow from a ladder with various snow clearing tools do so.
You face the risk of falling and seriously injuring yourself or worse.
Keep in mind that metal tools used during the removal process may cause more damage to your roof and or have the.