I have never heard the mandatory step flashing
where a lower roof meets a second-story wall called baby tins.
Good chimney flashing includes sections of "step flashing
" that run up the sides of the chimney, and "counterflashing." Counterflashing fits into grooves cut into the chimney and covers the step flashing
The detail increases in steps down to the level of copper step flashing
30-9/16 x 46-1/4 and install narrow wall cabinets 24 to 30 inches wide.
* Metal flashing, such as step flashing
or head flashing over a wooden door or Window, should be slipped under the housewrap.
BASS ACKWARDS: Even experienced subcontractors often install housewrap, step flashing
, and membranes from the top down (instead of the bottom up, as is proper) so that they actually catch water and trap it behind exterior finishes.
It's possible to reuse existing step flashing
and dormer flashing, but the best way to get a watertight seal is to tear off the siding in those areas and install new flashing.
Recently I noticed water stains on the inside wall directly below the step flashing
that sealed the new roof to the house siding.
RELATED ARTICLE: Secrets of step flashing