The following steps are recommended for the proper removal and replacement of damaged shingles.

Notes:
•  In hot weather, cool shingles with a water hose to allow easy separation of the shingle tabs;
•  In cold weather, avoid excessive bending of the shingles as it could cause cracking.
•  If you are unsure about anything, don't risk your well-being, please click here to contact a roofing professional in your area.

Step 1: Loosen adhesive under tabs in the second row above the damaged shingle. Lift tabs and withdraw the exposed nails.
 
Step 2: Loosen and lift tabs in the first row above damaged shingle and withdraw exposed nails.
 
Step 3: Loosen tabs of damaged shingle which can now be removed.
  Step 4: Place new shingle in the same position from which the sample was removed and re-nail. To reseal shingles, lift tab and apply 1” diameter spot of shingle cement under each tab. Press tabs down into the cement. Repeat nailing and cement procedure for any other rows that are damaged.