Johns Manville JM PVC T-Joint Patch, White/Grey, 4-1/2 in.
$10.00
PVC T-Joint Seam Patch
The Johns Manville PVC T-Joint Patch is a flexible, UV-resistant PVC accessory designed to seal seam laps where perimeter and/or header sheets intersect (T-joints) in PVC roofing systems. It helps reinforce vulnerable intersections for a cleaner, more durable single-ply membrane detail.
Key Features:
- Purpose-Built T-Joint Sealing: Designed to seal seam laps where perimeter/header sheets intersect in PVC systems
- UV-Resistant PVC Construction: Flexible, non-reinforced PVC formulated with Elvaloy® KEE for weathering resistance
- Compatible Color Option: White/Grey patch to match common PVC membrane installations
- Jobsite Convenience: Sold individually for easy takeoff and waste reduction
- Single-Ply Flashing Accessory: Intended for commercial PVC roofing membrane detailing and repairs
Please check the Product Data Sheet Here
Specifications Table:
| Specification | Details |
|---|---|
| Product name | Manv PVC T-Joint Patch White/Grey |
| Brand | Johns Manville |
| Category | Flashing |
| Subcategory | Single Ply Membrane Flashing |
| Unit of measure | PC – Piece |
| Color | White/Grey |
| Size / diameter | 4-1/2 in. |
| Material | Flexible, non-reinforced, UV-resistant PVC (polyvinyl chloride) with Elvaloy® KEE (ketone ethylene ester). |
| Intended use | To seal seam laps where perimeter and/or header sheets intersect (T-Joint) in PVC systems. |
Frequently Asked Questions (FAQ):
Q: What is this patch used for?
A: It is used to seal seam laps at T-joints—where perimeter and/or header sheets intersect—in PVC roofing systems.
Q: What material is the patch made from?
A: Flexible, non-reinforced, UV-resistant PVC (polyvinyl chloride) with Elvaloy® KEE (ketone ethylene ester).
Q: What size is this patch?
A: This White/Grey version is listed as 4-1/2 in. diameter.
Q: What colors are available?
A: The product line is offered in White, Grey, and Sandstone (this variant is White/Grey).
Q: Is this sold as a kit or individually?
A: It is sold as a single piece (PC).
A Clean, Seamless Finish for High-Performance Roof Lines
Roof details are where performance becomes design, and this PVC T-joint patch is the quiet hero that keeps intersections pristine. Its smooth, flexible, UV-resistant PVC creates a refined seal at the most vulnerable seam transitions, preserving the crisp geometry of a well-executed roof plane. Use it to elevate repairs and terminations so the surface reads uninterrupted and intentional. It’s the small, disciplined detail that underpins truly luxurious longevity.
Seal your PVC roof T-joints with a purpose-built JM patch for a cleaner, more durable seam intersection.
Reviews
"Bought the starter kit and the cushioning is supportive after hours. Used it on my commute all month. Customer service was helpful when I had a question."
"Picked the red option and it does exactly what it's supposed to do. I've had it on the kitchen counter daily. No complaints so far."
"Picked the red option and it fits true to size with no surprises. Running it through my routine for a month. Glad I went with this one."
"Chose the stainless version and the stitching has held up better than expected. Brought it to a tailgate and it performed. I'm in Pittsburgh, PA. Pleasantly surprised."
"Picked the red option and the stitching has held up better than expected. It keeps up with my home office setup. Took a minute to snap together, fits great now. Happy with my purchase."
"Bought the starter kit and the connectors click in securely. Took it to the lake house for the weekend. Would buy again."
"The team was responsive when I reached out. Used it during a move and nothing shifted. I'm in Boston, MA. Would recommend."
"Ordered two in different colors and the compartments keep everything organized. I've been using it daily for about two weeks now. I'm in Miami, FL. Happy with my purchase."
"Packaging was secure and nothing moved. I've been using it daily for about two weeks now. Five stars from me."
"Picked the matte black and the stitching has held up better than expected. Used it for a week of meal prep. Definitely a repeat customer after this."
