Check the damaged area for damage to the moisture barrier or flashing and check the damaged area for signs of seepage.
How to repair asphalt roof shingles.
Leaks often occur at the flashing in valleys or where pipes penetrate the surface.
Here s how to repair a torn asphalt shingle.
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Be careful not to smear the cement on exposed portions of roofing.
1 carefully lift the torn piece or damaged corner and using a putty knife carefully spread a layer of asphalt roofing cement under it.
Also check for bald spots cracks or curled shingles.
Cracked or split shingles may be repaired without.
Seal pipes with silicone and seal the connections between the roofing material and the flashing with asphalt roofing cement.
How to replace an asphalt roof shingle.
Seal down any surrounding shingles that may have had their sealant bond separated in the same way.
Merely apply three small spots of asphalt plastic roof cement under the new shingle s tabs evenly spaced along the shingle length and press the shingle flat down into place.
Insert a putty knife under and above the damaged shingle to break the seal holding it down.
Use a flat bar to pry up the damaged shingle and remove the nails being careful not to damage the shingle above it.