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.
The base flashing is extended up the wall a minimum of 8. This requires the cap flashing to be in two pieces, a receiver and a counterflashing. If the chimney straddles the ridge of the roof, this stepped flashing is used on the two sloped sides. The lower sides are flashed with a copper apron that covers the next course of shingles. If the chimney is entirely on one side of the ridge, a copper cricket must be used on the high side to divert the water to either sloped side. Apron and cap flashing should be of at least 16 oz. Base flashing for shingles can also be 16 oz., but for slate or tile roofs 20 oz. is recommended.