◆Home Improvement Ideas Journal

Is Zip System Plywood Truly Waterproof?

By

Wondering if Zip System plywood is waterproof? You're not alone. In today's home improvement world, understanding the water-resistance of building materials is crucial, especially when it comes to plywood. Let's dive into the innovative Zip System and explore its waterproofing capabilities.

As a homeowner, you've likely come across the term "water-resistance" when discussing plywood. However, waterproofing is a whole different ball game. Let's first understand what we mean by "waterproof" and then delve into the Zip System's unique features.

Understanding the Zip System

Introduced by Huber Engineered Woods LLC, the Zip System is a revolutionary structural sheathing that combines several essential building components into one product. It's designed to replace traditional plywood and housewrap, simplifying the building process and enhancing the structure's performance.

Zip System Sheathing
Zip System Sheathing
a house being built with the words wrap on your
a house being built with the words wrap on your
5 Tips for Waterproofing Plywood That Lasts
5 Tips for Waterproofing Plywood That Lasts

At its core, the Zip System is a plywood board with an integrated water-resistive barrier (WRB). It also incorporates surface-bonded fleece that allows for easy fastener installation. But does this comprehensive design make Zip System plywood waterproof?

Zip System's Water-Resistive Barrier (WRB)

The Zip System's integrated WRB plays a critical role in its waterproofing capabilities. Unlike traditional plywood, which relies on housewrap for water protection, the Zip System's WRB is factory-applied and permanent, eliminating the risk of installation errors or gaps that could lead to water intrusion.

ZIP System® Building Enclosures | Huber Engineered Woods
ZIP System® Building Enclosures | Huber Engineered Woods
Is Any Plywood Really Waterproof?
Is Any Plywood Really Waterproof?
ZIP System® R-Sheathing · Bellrise Farm
ZIP System® R-Sheathing · Bellrise Farm

This WRB is designed to shed water that gets behind the ZIP System and direct it to the exterior. When coupled with proper flashing and a well-designed drainage plane, the Zip System can effectively protect your structure from water damage.

Zip System's Surface-Bonded Fleece

The surface-bonded fleece on Zip System boards isn't just about easy nail installation. The layer helps to create a tight seal around fasteners, further enhancing the product's water-resistance. It also aids in preventing nail pops and squeaks, ensuring the longevity and durability of your structure.

But what about complete waterproofing? While the Zip System offers robust water-resistance, it doesn't claim to be entirely waterproof. Here's why:

ZIP System® Insulated R-Sheathing | Huber Engineered Woods
ZIP System® Insulated R-Sheathing | Huber Engineered Woods
Window-Flashing Demos on the Prove It Tour Stage: Zip System™ Flashing Tape
Window-Flashing Demos on the Prove It Tour Stage: Zip System™ Flashing Tape
an image of a book with the cover open and ready to be used for construction
an image of a book with the cover open and ready to be used for construction
Waterproofing Plywood: How to Seal it With 5 Methods
Waterproofing Plywood: How to Seal it With 5 Methods
1.9M views · 23K reactions | How to install ZIPsystem. Great way to install sheathing on the outside of your house while the same time making sure that it’s waterproof. #DIY #construction #realestate #tools | Misha Panchishak
1.9M views · 23K reactions | How to install ZIPsystem. Great way to install sheathing on the outside of your house while the same time making sure that it’s waterproof. #DIY #construction #realestate #tools | Misha Panchishak
40 Scrap Wood Projects
40 Scrap Wood Projects

The Difference Between Waterproof and Water-Resistant

Simply put, waterproof means nothing can get through, while water-resistant implies that while water may eventually seep through under constant, prolonged pressure, it will resist this for a considerable duration. The Zip System is designed to resist water intrusion, but it's not impenetrable indefinitely, especially under extreme conditions.

For instance, if water is directed at a Zip System board with constant, high pressure, it may eventually find a way through. However, with proper design and flashing, coupled with the Zip System's robust water-resistance, such a scenario is unlikely in a well-built structure.

The Role of Proper Design and Flashing

While the Zip System is a powerful tool in preventing water intrusion, it's crucial to remember that it's part of a comprehensive water management system. Proper design, such as strategically placing flashing, creating a continuous drainage plane, and installing proper rain screens, further reinforces the waterproofing of your structure.

a construction worker wearing a hard hat and safety vest is opening the side of a green wall
a construction worker wearing a hard hat and safety vest is opening the side of a green wall
a man in green shirt and hat working on roof
a man in green shirt and hat working on roof
How to Waterproof Plywood (5 Effective Methods 2026 Guide) | AllFlavor Workshop
How to Waterproof Plywood (5 Effective Methods 2026 Guide) | AllFlavor Workshop
30K views · 318 reactions | We get asked a lot about what makes a Watermark home different. Every exterior wall gets Zip System sheathing with taped seams, Blue Barrier by Polyguard on every nail ho | Watermark Properties Texas
30K views · 318 reactions | We get asked a lot about what makes a Watermark home different. Every exterior wall gets Zip System sheathing with taped seams, Blue Barrier by Polyguard on every nail ho | Watermark Properties Texas
Zip System - Pro Tips incl Liquid Flash + Zip-R #BUILDTight
Zip System - Pro Tips incl Liquid Flash + Zip-R #BUILDTight
the side of a building with different types of insulations and materials labeled in text
the side of a building with different types of insulations and materials labeled in text
a green house with the words pros and cons written in front of it
a green house with the words pros and cons written in front of it
Choose the Right Plywood for Any Outdoor Build
Choose the Right Plywood for Any Outdoor Build
Zip System + Halo
Zip System + Halo
Using ZIP System for Wall & Roof Sheathing
Using ZIP System for Wall & Roof Sheathing
OSB vs Plywood: Which Is More Water-Resistant?
OSB vs Plywood: Which Is More Water-Resistant?
Plywood vs Drywall: What’s Better?
Plywood vs Drywall: What’s Better?
Zip System 2.0
Zip System 2.0

This collective approach ensures that water is directed away from your build, minimizing the risk of water damage and ensuring the longevity and durability of your home or commercial structure.

Zip System's Other Benefits

In addition to its water-resistance, the Zip System offers numerous other advantages. These include:

  • Improved insulation levels due to reduced thermal bridging, leading to energy savings and better indoor comfort.
  • Easier and faster installation, as it replaces the need for multiple components and steps.
  • Reduced waste, as fewer materials are required, and there are no offcuts from housewrap installation.
  • Enhanced air barrier performance, leading to better indoor air quality and soundproofing.

So, is Zip System plywood waterproof? While it's not completely waterproof under extreme conditions, its robust water-resistance, when coupled with proper design and flashing, makes it an excellent choice for preventing water intrusion. By choosing Zip System, you're investing in a comprehensive, durable, and sustainable solution for your home or commercial structure.

Ready to incorporate the Zip System into your next building project? Contact your local supplier today to learn more and begin the process. Until next time, happy building!