Sheetmetal Between Plywood Siding Joint

Z flashing fits between the two pieces of siding at the end joint.

Sheetmetal between plywood siding joint.

For use with 5 8 siding the flashing reduces water infiltration at siding joints. How to install plywood siding in this case t1 11. A wraparound lower lip hooks the siding and requires one nail to hold it in place. Where a butt joint is necessary use a scarf joint sloped down toward the building s exterior.

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. Overlap the ends of the flashing by at least 2 inches and run a bead of caulk between the pieces at the overlap. Remove any sawdust dirt or debris from the gap to prep it for finishing. Use a keyhole or reciprocating saw with a fine tooth blade to remove enough material from one of the pieces of lap siding.

While plywood is most often installed as an underlayment and is typically covered with something on top it can be on the surface of areas such as porches and certain walls of your house. Use z flashing at any horizontal joints. A few tips and tricks to replace and install t1 11 plywood siding by yourself diy. Joint covers are primed on the outside for easy painting and coated on the inside with an epoxy backer to.

Vertical and plywood siding butt joint details. This has proven problematic over time as caulking the joint results in unsightly surface appearances due to the different textures as well as resulted. Trim overlaps the siding. Galvanized z flashing so called because of its z shaped profile keeps water from getting through horizontal joints between sheets of plywood siding.

Gaps may be prescribed where panels join at a shiplap joint and where plywood meets flashings. Create a proper 3 16 space at minimum between the two pieces of siding. Avoid horizontal butt joints in vertical siding. 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.

A common problem with cement board siding products and some other types of horizontal lap siding is that older installation guidelines called for caulking the joint instead of flashing the joint. Also see rain splash up siding damage. The joint covers protect the butt joint where two siding planks meet and provide an expansion joint to help prevent siding buckling. Seams between sheets of plywood are sometimes necessary to cover up.

Keep the panels 6 inches above grade and at least 2 inches away from concrete or asphalt stairs or walkways.