Flashing Plywood Siding

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.

Flashing plywood siding.

It is used to protect the horizontal joints between sheets of siding from water infiltration. If the siding was installed correctly you should see a piece of z metal flashing at the butt joint of the two pieces of siding. Avoid horizontal butt joints in vertical siding. Galvanized z flashing so called because of its z shaped profile keeps water from getting through horizontal joints between sheets of plywood siding.

Humphrey russel woodbury ct. 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. John latorre a contractor in tolumne california replies. I m installing t 111 plywood siding on an outbuilding with several windows and doors.

Z flashing fits between the two pieces of siding at the end joint. Slide the widest edge of a z flashing strip behind the upper siding panel. The seat dimension 3 8 in corresponds to the siding thickness. Galvanized steel z flashing is made from 28 gauge galvanized steel.

The best option for windows is the type with a vinyl. Friday july 27 2018 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. When the upper part of the. How to install plywood siding in this case t1 11.

How should i flash the windows and doors. 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. With plywood sidings use a z flashing at horizontal joints to shed water to the outside see figure 1 13 at above left. A few tips and tricks to replace and install t1 11 plywood siding by yourself diy.

You set the flashing on the top edge of each piece of plywood on a fat bead of caulk and hold it in place with just the heads of roofing nails driven into the sheathing. Adapted with permission from best practices guide to residential construction. Where a butt joint is necessary use a scarf joint sloped down toward the building s exterior. The large leg of the metal goes against the wall leaving the seat and face covering the top edge of the siding.

T 111 is best installed over tar paper or housewrap stapled to studs.