Flashing Between Siding And Concrete

It s a mistake to flash over that bottom course of siding as moisture behind the flashing will still invite rot insects mold and.

Flashing between siding and concrete.

On a wall to be covered with wood cement board vinyl or metal. 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. Using a metal j flashing between these types of transitions provides a barrier between siding and transitions that protects against water intrusion. In this rogue episode matt will show you a method to waterproof this very tricky transition between a wall and flat concrete slab.

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. This flashing will keep any water that does get behind the concrete step from reaching the wall sheathing rim joist and mudsill. But the j cap also creates a consistent line. The best solution is a preformed or custom bent kick out flashing to divert the water away from the siding.

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. 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. Large roof overhangs can provide protection in some cases.

Flashing over the siding or trying to shove flashing up under that bottom course leaves a risk of water entry at the building wall sill. Otherwise dripping water will leave its mark along the siding.