Johns Manville TPO isoweld 3 in. Steel Fastening Plates, Yellow, 500 per Box

Johns Manville TPO isoweld Steel Plates are 3.12 in. round G-90 steel fastening plates for attaching insulation and TPO or PVC thermoplastic membranes. They are designed for use with JM #15 Dekfast Fasteners. This line sells as one box of 500 yellow plates.

Key Features:

• Fastening plates: Used for fastening insulation and TPO or PVC thermoplastic membranes.
• G-90 coated steel: Plates are G-90 steel with a proprietary coating for durability.
• Dekfast matched: Designed to be used with JM #15 Dekfast Fasteners.
• 3.12 in. round: Round 3.12 in. (7.9 cm) plate size for broad bearing over membrane.
• Deck versatility: Suitable for wood, 18 to 24 gauge steel, or structural concrete decks.
• Bulk box of 500: Ships as a 500-plate box to keep large fastening jobs stocked.

Specifications Table:

Coverage & How Much You Need:

Plate spacing follows the project’s fastening pattern and JM specifications; with 500 plates per box, divide the required pattern density into 500 to estimate boxes needed per square.

Fit and Compatibility:

Designed for use with JM #15 Dekfast Fasteners (sold separately) and Johns Manville TPO and PVC thermoplastic membrane systems over wood, steel or structural concrete decks.

Frequently Asked Questions (FAQ):

Q: What is included?
A: One box of 500 yellow 3.12 in. round isoweld steel plates; fasteners are sold separately.

Q: What fasteners do they require?
A: They are designed to be used with JM #15 Dekfast Fasteners.

Q: What decks can they fasten to?
A: Wood, 18 to 24 gauge steel, or structural concrete decks.

Q: What are they used for?
A: Fastening insulation and TPO or PVC thermoplastic membranes.

Q: What are the plates made of?
A: G-90 steel with a proprietary coating.

Expert Verdict Reviewed by the SuperArbor Pro Desk

Match plates to the specified JM #15 Dekfast fastener length so the screw threads into the deck correctly without overdriving through the plate. Count plates from the project fastening pattern to order the right number of boxes, and keep plates dry before installation. Use these plates with JM TPO or PVC systems for both insulation and membrane attachment.

Follow JM fastening specifications and wear eye protection when driving fasteners with screw guns.

Order JM TPO isoweld 3 in. yellow steel plates in 500-count boxes for your next membrane fastening job.