The easiest way to repair roof shingles that have blown off is to individually replace them or replace a series of them.
How do you repair roof wth three shingles blown off.
Causes of blown off shingles.
The sealant strip will be detached first using a pry bar followed by the nails.
Blown off asphalt shingles will have portions still stuck on the roof which need removal.
The damaged shingles can be removed and new ones can be put into their place.
Your roofer will need to lift up the shingle above the one that fell off in order to remove the leftover portion.
Sometimes shingles will blow off during a storm if they were installed incorrectly.
How to repair roof shingles blown off.
If there are nail heads that are not currently covered by anything if multiple rows removed then create new holes in the roof to hold the shingle by moving the nails over.
However these patches may be noticeable as weather conditions can cause the older shingles to fade in color.
I used my flat crowbar.