Can you use 7/16 ZIP sheathing on a roof?

Finished roof should be installed per the manufacturer's installation instructions. Huber Engineered Woods requires panel edge support for 7/16" ZIP System® sheathing installed on roof supports spaced more than 16" on center. Panel Edge support might be blocking, tongue-and-groove edges or panel edge clips (H-clips).
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Does ZIP sheathing require roof underlayment?

space is left for attic ventilation. Taped Zip panels qualify as roof underlayment in most cases. This means that you don't need to install tar paper or synthetic underlayment over the roof sheathing before installing the roofing.
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Are H clips required for zip roof sheathing?

ZIP System® Roof Sheathing Notes and Limitations:

- Do not use H-clips with ZIP System roof sheathing. They are not required by code with this product and they may interfere with the tape seal.
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What is the difference between a green and brown zip board?

What is the difference between the green and brown ZIP System sheathing panels? Thickness. Green ZIP System sheathing panels are 7/16” and the sienna (brown or red) panels are 1/2” or 5/8” thick.
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What should I use for roof sheathing?

Oriented Strand Board (OSB) or plywood can be used, although plywood will provide higher nail head pull-through resistance. Use panels rated as “Exposure 1” or better. Install sheathing panels according to the recommendations of the Engineered Wood Association (APA). Use panels no smaller than 4 feet long.
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ZIP System® Sheathing 7/16" Roof and Wall Combo Panel Installation



Is Zip plywood waterproof?

Zip is OSB sheathing treated with a water-resistant coating that has a 12-16 perm rating. The sheathing is installed butt-jointed, relying on acrylic Zip tape for both airtightness and waterproofing at the board edges.
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Do you need ice and water shield on zip sheathing?

These products are typically a peel- and-stick type of sheet membrane that is installed on the eaves and also in the valleys on roofs. ZIP System sheathing is not a replacement for these types of membranes. Ice and water membranes need to be installed according to code if ZIP System sheathing is installed.
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What is the thickness of roof sheathing?

Sheathing Thickness

The typical thickness of roof sheathing is about 7/16-inch, which is just under 1/2-inch.
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What is the R value of zip sheathing?

ZIP System R Sheathing provides a combined R-value of 3.6 or 6.6 on the outside of wall framing in addition to wall cavity insulation. One panel delivers thermal, air, and moisture resistance, while providing strength and durability.
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What is the R value of 7/16 zip?

The R-Value of 0.55 for 7/16" OSB was obtained from ASHRAE Handbook, Fundamentals.
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How long can zip sheathing be exposed to weather?

In addition, ZIP System sheathing and tape comes with a 180-day exposure guarantee1 during construction.
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Is ZIP System tongue and groove?

ZIP System® sheathing panels are available in 4' x 8' sheets with self-spacing edge profiles and tongue and groove edge profile (5/8 only). ZIP System® panels are Exposure 1 rated and are available in the following span ratings and performance categories.
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Is Zip better than Tyvek?

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The Tyvek Wrap products are vapor permeable at 54 perms, allowing the building walls to dry quicker than ZIP Sheathing, which is permeable at 16 perms.
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Can you install Tyvek over zip sheathing?

1. DuPont™ Tyvek® WRB is suitable for covering coated sheathing products. 2. DuPont recommends the seams of the coated sheathing be left un-taped and install the Tyvek® WRB per the guidance in the applicable DuPont™ Tyvek® Water-Resistive and Air Barriers (WRB) Installation Guidelines.
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Which is better zip or Tyvek?

Tyvek® HomeWrap® The maker of ZIP System® coated sheathing and tape claims that its product prevents water intrusion while installing 40% faster than DuPont™ Tyvek® HomeWrap®.
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What is the minimum thickness of plywood for a roof?

3/8" APA rated sheathing is typically rated for a 24" span (distance between rafters) in a roof application. Half-inch is rated for a 32" span in the same application. Due to market pressures the 1/2" may actually cost less than the 3/8" and will be stronger.
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Is it better to nail or screw roof sheathing?

Nails are often preferred for structural joining, including framing walls, because they are more flexible under pressure, whereas screws can snap. Nails are also called upon when securing plywood sheathing for exterior walls, installing hardwood floors, and attaching siding and roofing.
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What type of plywood is best for roofing?

CDX plywood is considered the best roof sheathing material because of its better dimensional stability. That means it's hardly waterproof and readily absorbs water, but it also sheds the water quickly and reverts to its original shape and thickness effortlessly.
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Is tar paper better than Tyvek?

Both Tyvek and tar paper make great water barrier options, but they have advantages and disadvantages that set them apart from each other. Tyvek offers more permeability but less longevity, and you find it near the exterior siding. Tar paper withstands high moisture levels, but it can crack in freezing temperatures.
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Is Zip sheathing structural?

Currently, the AdvanTech® and ZIP System® ½" and 5/8" panels are recognized as Structural 1, providing a structural performance advantage over standard OSB sheathing.
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Is Zip sheathing a vapor barrier?

If the zip system as installed has a low enough perm rating, it's a vapor barrier, regardless of what the manufacturer says.
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