ZIP R SYSTEM
A HOMEOWNER'S GUIDE
If you're planning a build or a major renovation, you've probably heard about wall sheathing but might not know exactly why it's so important. Let's dive into what wall sheathing does and compare two popular options: ZIP System R vs traditional OSB or plywood.
Why Wall Sheathing?
In most homes, the exterior walls are built using 2x6 studs spaced 16 inches apart. These studs are usually covered with OSB (Oriented Strand Board) or plywood panels, which are nailed in place. This setup not only boosts the wall's load-bearing capacity but also keeps your walls square and prevents your house from wobbling—pretty crucial, especially for taller structures!
Enter ZIP System R
ZIP System R panels take traditional sheathing up a notch. These panels combine water-resistant sheathing with foam insulation. This not only adds an extra layer of insulation around the building but also covers spots that are typically under-insulated.
The Water Dilemma
The fact is that plywood and OSB don't like water. When exposed, they can deteriorate unless protected by a water-resistant, vapor-permeable house wrap. This wrap keeps rainwater out while allowing any moisture trapped inside the wall to evaporate.
However, ZIP System panels come with a built-in water-resistant barrier, so you can skip the house wrap. But remember, you still need to tape all the nailing areas to prevent water from sneaking into the wall cavity.
Installation Tips
Make sure your framing contractor knows their way around ZIP System R sheets. They're typically fastened with regular power-driven framing nails, which can be overdriven, damaging the waterproof membrane and potentially letting water in.
Boosting Insulation
Another big plus of the ZIP System is its impact on insulation values. Traditional setups have insulation tucked between the studs, which themselves offer minimal insulation (R-value), leading to significant energy loss. The ZIP R system ramps up the overall insulation (R-value), making your home cozier and more energy-efficient.
Heads Up!
To get the best out of your ZIP System, avoid scratching the surface. If scratches or nail overdrives happen, cover them immediately with ZIP tape or a waterproof rubber membrane. Always use a roller (not just any tool!) to apply the ZIP tape at connections for the best results.
When to Choose ZIP System R
If you're gunning for an Energy Star rating, aiming for net-zero standards, or just want top-notch energy efficiency, consider the ZIP System R. However, be aware that mishaps due to unfamiliarity with the product can cause headaches. In many cases, contractors and homeowners prefer the more familiar OSB or plywood panels.
Whether you opt for the advanced technology of ZIP System R or stick with the tried-and-true OSB or plywood, understanding the pros and cons of each can help you make the best choice for your home.