Volume 1   Issue 5 by Michael Connor, President In the two hundred year evolution of sheathing for houses, we’ve gone from boards to plywood to OSB (oriented strand board) and the latest entry, water-resistant treated OSB. The latter is sold as the ZIP-WALL System (a roof sheathing version is also available) and is marketed…

Volume 1 Issue 5 by Michael Connor, President In the two hundred year evolution of sheathing for houses, we’ve gone from boards to plywood to OSB (oriented strand board) and the latest entry, water-resistant treated OSB. The latter is sold as the ZIP-WALL System (a roof sheathing version is also available) and is marketed…

ZIP Roofing Panels, Roofing System, Roof Sheathing, ZIP System Wall Sheathing. Plywood Roof Sheathing | Huber Engineered Woods

ZIP System products include roof sheathing, wall sheathing and flash tape. These products make up the ultimate wall and roofing system that is easy to install and provides more moisture protection compared to other housewrap products.

ZIP Roofing Panels, Roofing System, Roof Sheathing, ZIP System Wall Sheathing. Plywood Roof Sheathing | Huber Engineered Woods

ZIP System products include roof sheathing, wall sheathing and flash tape. These products make up the ultimate wall and roofing system that is easy to install and provides more moisture protection compared to other housewrap products.

Photo of workers fastening plywood roof sheathing through several layers of rigid foam

After installing several layers of rigid foam above the roof sheathing, these workers installed plywood above the rigid foam. The plywood was fastened through the rigid foam to the rafters with long screws.

ZIP system sheathing

ZIP System products include roof sheathing, wall sheathing and flash tape. These products make up the ultimate wall and roofing system that is easy to install and provides more moisture protection compared to other housewrap products.

Photo of an Icynene-insulated roof with damp OSB sheathing

Open-Cell Spray Foam and Damp Roof Sheathing When open-cell spray foam insulation is installed on the underside of OSB roof sheathing, the sheathing sometimes gets damp. (free content but registration required)

Bad Chimney Flashing - Good chimney flashing includes sections of �step flashing� that run up the sides of the chimney, and �counterflashing.� Counterflashing fits into grooves cut into the chimney and covers the step flashing. Cutting, fitting and installing all those parts takes time, so sloppy roofers take shortcuts.Improperly flashed chimneys (top photo) cause lots of rotting roof sheathing and framing members. Chimneys need to be properly step-flashed and counterflashed so that water…

7 Roof Problems and What to Do About Them

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