Z Flashing For Siding Joints

Although commonly called z flashing the z has squared corners and it could as easily have been named stair step flashing we see it most often used at the horizontal joint between two sheets of plywood exterior siding to provide protection from water seeping in at the opening.

Z flashing for siding joints.

Reliable protection our z style flashing protects the horizontal joints between siding panels that don t overlap. The caulk has failed and water can find its way behind the siding. I have only found 6 w x 12 h flashing. The large leg of the metal goes against the wall leaving the seat and face covering the top edge of the siding.

Galvanized steel z flashing is made from 28 gauge galvanized steel. It is used to protect the horizontal joints between sheets of siding from water infiltration. Window and door cap 1 25 in x 120 in x 1 56 in aluminum z flashing. Any suggestions would be greatly appreciated.

When the upper part of the. Slide the widest edge of a z flashing strip behind the upper siding panel. It is used to protect the horizontal joints between sheets of siding from water infiltration. Product details sku s specs colors dimensions.

The seat dimension 1 2 in corresponds to the siding thickness. Install the first length of z flashing. I m using z flashing along bottom edge but i haven t found any flashing for the 4 vertical butt joints. Galvanized z flashing so called because of its z shaped profile keeps water from getting through horizontal joints between sheets of plywood 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. The seat dimension 3 8 in corresponds to the siding thickness. It is used where siding meets horizontally. 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.

You set flashing upon top edge of each piece of plywood over a fat bead of caulk and hold it in place with just heads of roofing nails driven into sheathing. Item 3807 model 5504900120. The large leg of the metal goes against the wall leaving the seat and face covering the top edge of the siding. Galvanized steel z flashing is made from 28 gauge galvanized steel.

Failed caulk joint with no flashing behind.