Use a felt paper spline wrapped around the corner and extending 6 inches beyond the corner board to protect the joints where the siding meets the corner boards see figure 1 5 at left.
How to use flashing to protect wood siding.
In certain instances flashing may need to be installed on the exterior of siding.
Flush the end of the flashing length with the wall corner and secure the flashing to the framing with an 8d nail at each wall stud.
Where the step flashing terminates along a sidewall is a common trouble spot for moisture problems.
Use overlapping 1x4s or 1x6s at outside corners or use 5 4 stock for a heavier look.
Cover with cap flashing.
In areas where snow may build up add a wide band of peel and stick membrane over the step flashing but under the sheathing wrap as shown.
Here are four ways to use metal flashing to prolong the life of siding.
However in most instances step flashing should be installed behind siding.
Nail it to the sidewall or glue it if nailing isn t possible.
Many times builders fail to use proper flashing at the top of windows.
The best solution is a preformed or custom bent kick out flashing to divert the water away from the siding.
Otherwise dripping water will leave its mark along the siding.
Then caulk all joints with a high grade 50 year paintable silicone or polyurethane product to prevent water from getting behind the siding.
Inside corner w flashing.
Tinting a standard white primer a shade or two lighter than the finish coat improves coverage.
Slip in the flashing.
Begin at either end of the wall and set the level middle section of the z flashing onto the top edge of the siding panel with the wider flange upward and against the wall framing.
When it comes to flashing siding corners many builders simply use a 1x wood corner.
Prime all bare spots with a high grade oil based primer.
Caulk any joint that allows this to happen.
If the kick out and step flashing can t tuck behind the siding screw on cap flashing to cover it then caulk along the top.
Lift the bottom shingle and slip in the kickout flashing.
