Remove wood shingles with care up one or two courses sufficient to install proper sidewall flashing and counter flashing.
Bottom of wall siding flashing details.
The siding gets held up 1 8 or so above the head flashing which should have end dams formed on both sides.
Install flashing under the bottom edge of the house wrap or other weather resistant barrier shingle fashion to direct water out of the wall.
This intersection is critical.
Installing a strip of self healing bituthane membrane like ice and water shield under the siding at the bottom of the wall may be a worthwhile investment.
In all cases make sure to detail the flashing membrane so that it sheds water.
The z flashing resembles the letter z from the side and comes in strips about 10 feet long.
It should tuck under the sheathing wrap above and over the flashing below.
The same drip flashing that you typically use at the bottom of the wall gets used at the head and is shown on your drawing.
If installed along the foundation the membrane should cover the joint where the sill meets the foundation.
Aluminum wall siding is not a waterproof building skin.
The bottom edges of each siding course are clipped together often including vent openings.
Slide the widest edge of a z flashing strip behind the upper siding panel.
When the upper part of the.
Lift the bottom shingle and slip in the kickout flashing.
Inspect the sidewall around and underneath the fascia and inside the house for signs of moisture damage and repair any rotted areas.
Nail it to the sidewall or glue it if nailing isn t possible.
Thats a long way of saying.
Carefully detail the area at the bottom of the wall where the sill connects to the foundation.
Stucco cladding install self adhesive flashing behind the weep screed a perforated metal strip at the base of the exterior walls at the height above grade specified by the local building code.
Reinstall new wood shingles keeping the bottom of the shingle 1 2 above the roof surface below.
Cut a piece of flashing out of felt paper and install it at the bottom corners of the windows before you install the side j channels.
Overlap the flashing onto the row of siding just below the window.
Flashing and trim always begin flashing installation from the bottom and work up so that upper flashings are lapped on top of lower flashings.
Just delete the j channel from your detail and away you go.
Wind blown rain can easily enter the wall at all sides of the windows as well as between siding segments and possibly at the wall bottom near those corner posts.
