T-Joint Flashing | Mastering the Basics | ZIP System® sheathing and tape
Summary
TLDRThis video demonstrates proper flashing techniques when a vertical seam (TG) occurs above a window or door opening in the Zip System sheathing. It outlines three methods for flashing the intersection between the vertical seam and head flashing: 1) shingle vertical seam tape over the head flashing, 2) use 6-inch tape to cover the top flange of the window, and 3) apply two layers of 4-inch tape. Each option includes using drip edges and rolling the tape for proper installation. The video emphasizes following manufacturer guidelines for air sealing and offers more technical tips on the Zip System YouTube channel.
Takeaways
- 🛠️ The video covers proper flashing techniques when a T-joint occurs above a window or door opening.
- 🔧 The same considerations apply for T-joints above both window and door openings.
- 📏 Special attention is needed for any vertical seams that occur above window openings when flashing to the Zip System sheathing surface.
- 📋 Three options are provided for detailing the intersection between vertical seams and head flashing above a window.
- 📐 Option 1: Shingle the vertical seam tape over the top of the window head flashing, with a minimum of 2 inches overlap.
- 📏 Option 2: Use 6-inch Zip System tape to flash the window and cover the vertical seam tape.
- 🔨 Option 3: Use two layers of 4-inch Zip System tape to flash the top flange of the window.
- 💡 A tape-saving option involves using a shorter second horizontal piece that extends at least 2 inches past the vertical tape.
- 🔩 After flashing the window, install a drip edge and flash it to the Zip System tape using 4-inch tape.
- 📚 Follow manufacturer recommendations for air sealing gaps between the window frame and rough framing.
Q & A
What is the primary purpose of flashing in the context of the video?
-The primary purpose of flashing in the video is to protect the structure from water infiltration, especially at intersections like T joints above windows or door openings.
What special consideration must be given when flashing a window in the Zip System sheathing surface?
-Special consideration must be given to any vertical seams that occur above the window opening to ensure they are properly detailed and sealed.
What is the first option for detailing the intersection between a vertical seam and the head flashing?
-The first option involves shingling the vertical seam tape a minimum of two inches over the window head flashing, followed by the installation of drip edge and flashing it with 4-inch Zip System tape.
How is the 6-inch Zip System tape used in the second option?
-In the second option, 6-inch Zip System tape is used to flash the top flange of the window to the Zip System sheathing surface, ensuring proper sealing above the vertical seam.
What is the third option for flashing the top flange of the window?
-The third option involves using two layers of 4-inch Zip System tape to flash the top flange of the window. The first layer seals the flange to the sheathing, while the second layer overlaps the first by two inches.
What is the tape-saving option mentioned in the video?
-The tape-saving option involves using a shorter second horizontal piece of tape that extends a minimum of two inches past the vertical piece of tape onto the Zip System panel surface.
Why is it important to roll the tape after installation?
-Rolling the tape ensures a proper bond between the tape and the sheathing, preventing water infiltration and ensuring the flashing system functions effectively.
What is the purpose of the drip edge in the flashing process?
-The drip edge directs water away from the window or door opening, reducing the risk of water entering the structure and protecting the head flashing from potential water damage.
What are the manufacturer's recommendations for air sealing the window opening?
-The manufacturer recommends following guidelines for air sealing the gap between the window frame and the rough framing on the inside of the window opening to prevent air and moisture infiltration.
Where can viewers find more technical tips and product information?
-Viewers can find more technical tips and product information by visiting YouTube at youtube.com/zip_system_sheathing.
Outlines
🏠 Flashing Techniques for Windows and Doors
This video demonstrates proper flashing techniques for T-joints above windows and door openings. The focus is on flashing a window in the context of a Zip system sheathing surface, particularly addressing the intersection between the vertical seam above the window and the head flashing. The principles outlined apply to both window and door openings.
🔨 Option 1: Shingling Vertical Seam Tape Over Head Flashing
The first option for handling vertical seams above a window involves shingling the vertical seam tape over the top of the window head flashing. The tape should overlap a minimum of two inches. Afterward, a drip edge is installed above the window, and it is flashed using 4-inch Zip system tape, ensuring it is rolled for proper adhesion.
🛠️ Option 2: Using 6-Inch Zip System Tape for Vertical Seams
In this second method, 6-inch Zip system tape is used to flash the window directly to the sheathing surface, including any vertical seam above the window. The tape is rolled to ensure adhesion. Following this, a drip edge is installed and flashed with 4-inch Zip system tape.
📏 Option 3: Double Layer Flashing with 4-Inch Tape
The third option involves using two layers of 4-inch Zip system tape to flash the top window flange. The first piece of tape flashes the top flange, while the second piece is shingled over the first by two inches. This method includes an optional tape-saving approach by shortening the second piece. A drip edge is installed afterward, and the flashing is finished with 4-inch tape.
📑 Additional Considerations and Manufacturer's Recommendations
The final section covers sealing the gap between the window frame and the rough framing per the manufacturer's recommendations. It highlights the importance of following the manufacturer’s guidelines for air sealing and directs viewers to additional resources on the Zip system sheathing YouTube channel for more technical information.
Mindmap
Keywords
💡Flashing
💡TG (Tapered Gable)
💡Zipp System
💡Vertical Seam
💡Head Flashing
💡Drip Edge
💡Tape
💡Sheathing
💡Air Sealing
💡Rough Framing
💡Manufacturer's Recommendations
Highlights
The video covers proper flashing techniques for a TG joint above a window or door opening.
Special consideration is needed for vertical seams above the window when using the Zipp system sheathing surface.
Three options are provided for detailing the intersection between the vertical seam above the window and the head flashing.
Option one involves shingling the vertical seam tape over the top of the window head flashing, with a minimum two-inch overlap.
In the first option, a drip edge is installed above the window and flashed to the Zipp system tape using a 4-inch tape.
Option two uses 6-inch Zipp system tape to flash the window and cover the vertical seam above the window.
In option two, after installing the window, a drip edge is flashed to the Zipp system using a 4-inch tape.
Option three involves using two layers of 4-inch Zipp system tape to flash the top flange of the window.
In the third option, the second horizontal piece of flashing tape overlaps the first by two inches.
A tape-saving technique is to use a shorter second horizontal piece that extends a minimum of two inches past the vertical seam tape.
In all options, the tape must be rolled after installation to ensure proper adhesion.
After installing the window, a drip edge is installed above the window and flashed with 4-inch Zipp system tape.
Manufacturers recommend sealing the gap between the window frame and rough framing for air sealing.
The video emphasizes following the manufacturer’s recommendations for proper installation and air sealing.
More technical tips and information about Zipp system sheathing can be found on their YouTube channel.
Transcripts
the following video covers proper
flashing techniques when a TG occurs
above a window or door opening this
video demonstrates a t joint above a
window the same considerations apply for
T joints above door openings when
flashing a window to the Zipp system
sheeting surface special consideration
must be given to any vertical seams that
occur above the window opening there are
three different options for detailing
the intersection between the vertical
seam above the window and the head
flashing one option is to shingle the
vertical seam tape over the top of the
window head flashing shingle a vertical
seam tape a minimum two inches over the
window head flashing roll the tape
install a piece of drip edge above the
window and flash it to the Zipp system
tape above with 4-inch
zip system tape roll the tape the second
option is to use 6-inch zip system tape
to flash the window to the zip system
sheathing on top of the vertical seam
tape to use this method when installing
the window use 6-inch zip system tape to
flash the top flange of the window to
the zip system sheathing surface roll
the tape
after flashing the window install a
piece of drip edge above the window and
flash it to the zip system tape above
with 4-inch zip system tape roll the
tape the third option is to use two
layers of four inch sip system tape to
flash the top flange of the window
first use one piece of 4-inch Subsystem
tape to flash the top flange of the
window to the zip system sheathing roll
the tape shingle a second horizontal
four inch piece of zip system flashing
tape overlapping the first horizontal
head flashing by two inches roll the
tape a tape saving option is to use a
shorter second horizontal piece that
extends a minimum of two inches past the
vertical piece of tape onto the zip
system panel surface roll the tape after
installing the window install a piece of
drip edge above the window and flash it
to the zip system tape above with four
inch zip system tape roll the tape
follow the manufacturers recommendations
for air sealing the gap between the
window frame and rough framing on the
inside of the window opening find more
technical tips and product information
by visiting youtube-dot-com
forward-slash zip system sheathing
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