indemnify. 1  to compensate for damage or loss sustained, expense incurred, etc. 2  to guard or secure against anticipated loss; give security against (future damage or liability).
Counter-flashing (or cover flashing, cap flashing) is a term used when there are two parallel pieces of flashing employed together such as on a chimney, where the counter-flashing is built into the chimney and overlaps a replaceable piece of base flashing.
Edit Answer (for another -24 minute) It depends a lot on what type of flashing you have, and type of chimney - the $150-300 ExteriorUpgrader gave you might suffice for a riveted flashing on a metal fake chimney or step flashing on mortared type of chimney.