Easy, Low-Cost, Drainable Strapping for Rainscreen Siding
The corrugated board strips provide easy drainage, and perhaps more important, easy airflow behind the wood siding. On the other hand, Project Manager Evan Smith is a little concerned about the places where nail heads have punched through the waterproof skin of the ZIP sheathing on the wall. “We set the nails flush when we installed the sheathing,” he says, “but then it rained and the boards swelled up, and the nail heads punched through. Each hole is a place for water to collect.” The crew has been taping over the nail holes, Smith says. But he says that on the next build, he may switch back to conventional OSB sheathing and housewrap.