Putting Siding Over A Zip System

Hardietrim boards mouldings.

Putting siding over a zip system.

Zip system has been gaining ground in the homebuilding market due to an aggressive marketing program and because it is growing in popularity homeowners can mistakenly think that it is a good. Hardieplank lap siding. Seems like moisture will stay between the siding and zip walls. The zip walls eliminate the need for housewrap when many types of siding are installed but what if the hardi board siding has no caulk or flashing at the butt end joints.

Fighting moisture during renovation and restoration. Hardiepanel vertical siding. Perhaps still superior to zip when used with drainwrap instead of a larger gap with zip reducing the cost of the former. Deck to wall flashing installed over the zip system panels creating a reverse lap.

Zip system sheathing and tape protects what matters most by giving you a strong quality home that protects against moisture and air leaks. A revolutionary new approach to building enclosures zip system sheathing and tape streamlines the weatherization process with an integrated air and water resistive barrier that delivers moisture and air protection in one easy to install system. Hardiesoffit pre cut panels. Similar conditions can be found with sheathing products.

I m curious why did you choose zip over taped plywood wrap. Zip system is easily identified by its green colored panels that are attached and sealed with black zip tape on all the exterior seams of the home. Typical of construction in a wet climate the house wrap has mud and other debris on it. Choice of siding and overhangs should also change the odds.

Zip system tape was not adhered near the end of a seam at an inside corner. When we build homes we do more than put up four walls. The latter is more breathable more durable shingled and afaik about the same price. Anyone know the technical details for installing hardi board or any cementious siding over zip walls.

02 zip system wall sheathing installation manual step1 install zip system wall sheathing panels positioned with the water resistive barrier facing outside.