Bottom Of Wall Siding Flashing Details

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.

Bottom of wall siding flashing details.

If installed along the foundation the membrane should cover the joint where the sill meets the foundation. Thats a long way of saying. 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. It should tuck under the sheathing wrap above and over the flashing below.

The z flashing resembles the letter z from the side and comes in strips about 10 feet long. The siding gets held up 1 8 or so above the head flashing which should have end dams formed on both sides. This will prevent moisture from leaking under the flashings and into the structure. Reinstall new wood shingles keeping the bottom of the shingle 1 2 above the roof surface below.

Overlap the flashing onto the row of siding just below the window. Inspect the sidewall around and underneath the fascia and inside the house for signs of moisture damage and repair any rotted areas. Aluminum wall siding is not a waterproof building skin. In all cases make sure to detail the flashing membrane so that it sheds water.

Slide the widest edge of a z flashing strip behind the upper siding panel. 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. Now any water that runs inside the j channels will come out on top of the siding and out the weep holes designed for this purpose. Install flashing under the bottom edge of the house wrap or other weather resistant barrier shingle fashion to direct water out of the wall.

Just delete the j channel from your detail and away you go. Endlap flashings a minimum of 6 and seal the lap joints with sealant. Nail it to the sidewall or glue it if nailing isn t possible. The bottom edges of each siding course are clipped together often including vent openings.

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. When the upper part of the. Lift the bottom shingle and slip in the kickout flashing. Remove wood shingles with care up one or two courses sufficient to install proper sidewall flashing and counter flashing.

Flashing and trim always begin flashing installation from the bottom and work up so that upper flashings are lapped on top of lower flashings.