Properly installed, the combination of ZIP System sheathing and ZIP System flashing tape protects against water intrusion and forms a tight barrier against unwanted air leakage. Below are several wall flashing details for several different types of exterior cladding. Always remember to roll the tape.
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A basic component of ZIP System flashing tape installation is how to overlap tape at splices. Overlap tape splices a minimum of 3 inches. At T-joints, where horizontal and vertical seams intersect, have the vertical piece a minimum of 1 inch from the edge of the horizontal tape. A good reference is roughly half the width of the tape.
Find more ZIP System building enclosure installation details in the Installation Manual.
Taping inside corners can be tricky for first-time users. Use an arms-length of tape at a time. Pinch the tape on each end to make it pop in the opposite direction. It is recommended to start from the bottom up, but it is not required. Overlap each tape segment a minimum of 3 inches. Use a plastic tool to work the tape towards the corner and on the other panel and roll both sides of the tape.
Once again, it is recommended to start from the bottom up, but optional. When taping an outside corner, secure the tape evenly on one side. Fold the flashing tape tightly over the other side of the corner and roll the tape. If overlapping tape, ensure it is overlapping by 3 inches.
The foundation transition is an important area of focus when it comes to water management, even if your local building code doesn’t have a specific requirement. There are several flashing options available such as ZIP System liquid flash, a rigid metal kick-out flashing, or a termite shield. Be sure to install a piece of ZIP System flashing tape along the top edge of any metal flashings used in this area.
Whether installing sheathing with the sill plate or in-plane with the concrete foundation, the sheathing to foundation transition is a critical point for air and water management. There are several methods for flashing the bottom of the sheathing at the foundation. Here are four options that can be done, but other details may work as well.
Like adhered stone claddings, traditional hard-coat stucco is required by code to have two layers of WRB. Be sure to roll the flashing tape on the top edge of the code-approved weep screed at the sheathing to foundation transition.
Install ZIP System flashing tape along the top edge of the code approved brick ledger flashing. Roll the ZIP System flashing tape. Brick veneer anchors should be anchored to wall studs through ZIP System sheathing. Allow a 1-inch air space (or 2 inches for IBC compliance) between the brick veneer and ZIP System sheathing. Install weep holes following the local building code.
On November 9, , we hosted the second in a two-part series on the latest solutions for creating cladding connection designs for structural steel buildings. The second webinar provided a technical overview of the Edge-Tie system. Simpson Strong-Tie R&D engineers Abhishek Kulkarni and Fayad Rahman discussed the performance evaluation testing and design parameters for a façade attachment method that uses adjustable bolted connections without any field welding.
If you missed or would like to revisit the webinar, you can view it in the Simpson Strong-Tie Learning Center. During the November presentation, we received dozens of questions from our attendees. We’ve answered all those questions, and they’re now available in a pdf. In what follows, we highlight 10 of those questions.
Q: Other than glass curtain walls, what types of cladding systems can the Edge-Tie™ system be used with?
A: The Edge-Tie™ system can be used with masonry, cold-formed steel, and more. It’s very flexible and can be used with a range of façade systems. Please reference our detail sheet for more resources on applications that the Edge-Tie system can be used with.
Q: Is this reusable if the cladding design changes over time?
A: Yes. The Edge-Tie™ system allows for adaptive reuse and changes to the cladding design.
Q: Were these tests witnessed by an independent third party?
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A: Yes. All testing was witnessed by an independent third party.
Q: How early on in the project does Simpson need to get involved to be able to detail this system in the drawings?
A: The earlier the better. There have been projects where the original design had specified a regular bent plate pour stop and the details that were made for a bent plate pour stop were modified for the Edge-Tie™ channel. It’s possible to do it late in the game; but the earlier we get involved, the smoother and quicker everything goes.
Q: Who is responsible for the design of the system? Is it the façade engineer or the engineer of record?
A: Both. The façade engineer might do the connection design, while the EOR might need to check the spandrel beam for any/additional torsional load.
Q: Can the calculation tool account for wind load reactions that act in both the vertical and horizontal directions simultaneously? For example, wind load reactions from a sloped façade?
A: Yes, you would input each component. In the tool, each of the components is individually added, so you would have to do your calculation and rotate your façade load to the correct axis and input it.
Q: What channel heights are available? Is a 6″ slab possible?
A: An additional pour stop plate can be welded to the top at the fabrication shop to accommodate different slab heights.
Q: Is there a minimum edge distance to the edge of the slab for T-bolts at the outside corner locations?
A: Yes. We specify a minimum of 2″. Please Refer to the Installation Details Sheet.
Q: What keeps the bolt from spinning during initial tightening?
A: The head of the bolt will lock into the channel slot to keep it from spinning during initial tightening.
Q: Does the safety rail system meet OSHA requirements for fall protection?
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