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:

Frequently Asked Questions (FAQ):

Q: What is this patch used for?
A: It is used to seal seam laps at T-jointswhere perimeter and/or header sheets intersectin 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. Its 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.