Flashing Between Siding And Concrete

Flashing is a strip of metal usually aluminum about 8 inches long and bent at 90 degrees with each side at least 5 inches wide.

Flashing between siding and concrete.

In this rogue episode matt will show you a method to waterproof this very tricky transition between a wall and flat concrete slab. Large roof overhangs can provide protection in some cases. Otherwise dripping water will leave its mark along the siding. The best solution is a preformed or custom bent kick out flashing to divert the water away from the siding.

Sometimes with the siding trim and door out of the way a flashing can be slid in between the house and the concrete. Using a metal j flashing between these types of transitions provides a barrier between siding and transitions that protects against water intrusion. Ideally there should be some wall flashing over the wall sheathing from the bottom of the door extending over the foundation and the door s pan flashing should lap over this wall flashing. Run the l shaped flashing up under the bottom row of siding so that it tucks under the final bottom row and on top of the wall and on top of the last row of bricks before you cap it with the cap.

Other times an l flashing over the surface of the concrete and work but keep in mind this can also trap moisture behind the the concrete. The solution to rotting sidewalls is a small piece of bent metal called a kickout flashing at roofing suppliers which simply directs all that water away from the wall. Otherwise dripping water will leave its mark along the siding. This flashing will keep any water that does get behind the concrete step from reaching the wall sheathing rim joist and mudsill.

Even if the roof has been properly flashed against the sidewall this one hasn t water can still run down the side of the house and behind the siding causing rot. But the j cap also creates a consistent line.