See also: Snow on Roofs
2023 Tahoe Snow

A common problem with composition shingle roof in the Sierra Nevada is the bottom row or 2 of shingles being pulled off in the snow.
The most common solution seems to be just having flashing at the bottom of the roof.

In previous years only the shingles which came to the bottom of the roof came off. The new section with several inches of flashing at the bottom were OK, but in the record snow of 2022-23 even this section lost shingles.

Russell Poulsen Olympic Valley
· The key, no matter what type of shingle is to use metal at the end. The metal should extend about a foot above the intersection of the wall and the roof, which is the origin of most ice dams.

Wilson Contractor - Bear Creek
Hi Don, We at Mr Honey Do are making these exact repairs! Heat tape is a must in this area. There are a few different applications that can be installed. The best is to convert the lower two-three shingle areas to metal and install the heat tape underneath the metl so it doesnt get torn off by heavy snow.

Tahoma

Gray's roof next door

It looks like they added some kind of plates
It worked.

I saw 1 Snow gard
They are primairly to either stop snow from coming down or break or break it up so people underneath don't get injured. See Wikipedia.

and 1 with Heat tape.
Issues:

• Requires electric power to work,
  Wiring issues and expensive electric bills
• It requires human intervention to turn it on and off,
  or sensors, (which can be unreliable)
• Snow that the heat wire melts can refreeze.