ZIP System® Sheathing

Don't be fooled by sugarcoated claims from ZIP System ® Sheathing

In its ads, sales literature and in the field the manufacturer of Zip Systems ® exterior sheathing, makes numerous claims about the superiority of its product. DuPont™ Tyvek® weather barriers deliver excellent overall performance and as easy an installation process as compared to ZIP System® coated sheathing and tape. For an excellent weather barrier that’s fast and easy to install, insist on DuPont™ Tyvek®. It’s no fairy tale.

Tyvek ® vs. ZIP System ® Sheathing: Z6 Commissioning Large Scale Test 2

Tyvek® TEST

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Z6 Commissioning - Test Video No. 1: ZIP System®

How did the leading coated sheathing system stand up to a large-scale spray test? Watch this short video to see the dramatic results.

Tyvek® vs ZIP System® Laboratory Wall Tests

Two independent labs conducted ASTM E331 Water Infiltration Testing on exterior mockup walls constructed by professional framing contractors who were familiar with both the ZIP System® and the DuPont Tyvek® Building Envelope System. Each wall was tested at 2.86 PSF, 4.00 PSF and 6.24 PSF.  Click on the videos to see the results.  

Test #1 - TLS Labs, Laguna Niguel, California

Flow Rate & Pressure Test

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COATED SHEATHING & TAPE SYSTEM 1

Flow Rate & Pressure Test

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This is the title

TYVEK® BUILDING ENVELOPE SYSTEMS

TEST #2 - CONSTRUCTION CONSULTING LABORATORY INTERNATIONAL (CCLI), CARROLLTON, TEXAS

Where does the water go?

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What happens when a coated sheathing system gets wet?

Where does the water go? This short video shows the not so surprising results from a recent third-party test.

Where does the water go?

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TEST #3 - LARGE SCALE WALL TEST - Z6 COMMISSIONING, GALVESTON, TEXAS

LARGE-SCALE TEST 1

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Z6 Commissioning - Test Video No. 1: ZIP System®

How did the leading coated sheathing system stand up to a large-scale spray test? Watch this short video to see the dramatic results.

COATED SHEATHING AND TAPE SYSTEM

Does a mult-story wall create more opportunities for water to enter the wall? Watch these short videos to see the dramatic results.

LARGE-SCALE TEST 2

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Z6 Commissioning - Test Video No. 1: ZIP System®

How did the leading coated sheathing system stand up to a large-scale spray test? Watch this short video to see the dramatic results.

TYVEK® BUILDING ENVELOPE SYSTEMS

Speed

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The manufacturer of the ZIP System® claims that it installs 40% faster than the leading house wrap. In fact, in testing conducted at a respected, independent lab the results showed NO significant installation time advantage for ZIP System® Sheathing + Tape versus the DuPont™ Tyvek® Weatherization System + conventional OSB sheathing. 

TRUTH OR SCARE?

Does the ZIP System ® really install 40% faster?

THE PROBLEM WITH OVERDRIVEN FASTENERS

The manufacturer of the ZIP System ® claims that overdriven fasteners aren’t a problem. However they appear to create a direct pathway for water to enter the wall system.

The following videos show tests of an overdriven fastener in the ZIP System ® and the same demonstration using DuPont Tyvek® Wrap Cap Staples. No industry-recognized test exists to test weatherization systems with overdriven fasteners. Therefore, DuPont selected the AATCC 127 Hydrostatic Pressure Test which measures the resistance of a fabric/material under a hydrostatic water column of 55 cm for 5 hours. No added pressure was applied. DuPont enhanced the test by adding a fastener centered within the column to test leakage at the fastener to simulate how water can leak through the fastener over time. DuPont believes that this test, as enhanced, fairly illustrates the likelihood of water penetration under real life conditions. 

FASTENER ISSUES

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Huber claims overdriven fasteners don’t affect the performance of the ZIP System ® sheathing. This demonstration shows how that claim just doesn’t hold water.

NO ISSUES HERE

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After seeing how much water the overdriven fasteners allow to enter the ZIP Wall System, watch this demonstration to see what happens when Tyvek® Wrap Caps are put to the same test. 

The Importance of Proper Shingling

ZIP System® taped seams (right portion of the picture below) are reverse shingled, which creates additional opportunities for water intrusion. DuPont™ Tyvek® building wraps (left) with proper overlap shed water away from the wall.

Are You Smarter Than Water?

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Installation of the ZIP System® requires reverse shingling at every horizontal seam. This short video makes it easy to grasp the obvious benefits of proper shingling. 

SHOOTING HOLES IN YOUR WRB

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Installation of the ZIP System® sheathing requires 52 fasteners per panel. Overdriven fasteners are common. The manufacturer claims that’s not a problem, but we consider each overdriven fastener an opportunity for water to enter the wall.

DUPONT TYVEK®. SUPERIOR PRODUCTS. UNPARALLELED SUPPORT

THE DUPONT™ BUILDING KNOWLEDGE CENTER

The DuPont™ Building Knowledge Center provides technical information and support and industry-shaping insights to help builders address the highest performance standards.

THE DUPONT™ TYVEK® SPECIALIST NETWORK

The DuPont™ Tyvek® Specialist Network is a national team of highly-trained field representatives, who deliver detailed information on DuPont™ Tyvek® Weatherization Systems products and offer on-site guidance and training to help you get your job gets done right.

DUPONT™ TYVEK® CERTIFIED INSTALLERS

DuPont™ Tyvek® Certified Installers are on-site DuPont air-and-water barrier product experts, able to provide installation services that can help seal the building envelope.

Zip System Sheathing Sugar Coated Claims

ZIP System® is a registered trademark of Huber Engineered Woods LLC.