Slip a flat pry bar under the damaged shingle and press down to pop out the roofing nails.
How to repair replace roof shingles.
To access the nails.
Carefully pull the shingle down the slope of the roof not up and not horizontal.
In the photo below the target shingle perhaps it needs replacement due to damage from a falling object or roof.
Carefully lift the upper.
How to replace an asphalt roof shingle.
Maintaining a sound roof.
Fixing damaged roof shingles 1.
Use a flat bar to pry up the damaged shingle and remove the nails being careful not to damage the shingle above it.
Removing 3 tab shingles using a flat bar to do a repair.
This video explains how to repair and replace both three tab shingles and architectural shingles.
The first step obviously requires the removal of the nails holding that shingle to the roof deck.
Get the necessary replacement materials.
If it is still stuck check for nails.
If it is stuck in a corner carefully pry up the next shingle.
Swap shingles if part of a.
Install the new shingle.
It goes into detail with specific instructions for removing.
Slide the new shingle up into place.
If you hear a ripping sound your prying too fast.
If the shingles are.
Insert a putty knife under and above the damaged shingle to break the seal holding it down.
Be sure to align with the shingles of either side.
Cut off the damage tab of the shingle with a.
Place a new shingle in the same position as the shingle you removed.
Step one break the seal on the target shingle.