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Johns Manville JM Lite-Deck Insulation Fasteners with 3 in. Galvalume Plates, 3 in. to 6 in. Lengths
Regular price $667.00Johns Manville JM Lite-Deck Insulation Fasteners with 3 in. Galvalume Plates, 3 in. to 6 in. Lengths
Johns Manville Lite-Deck fasteners and plates fasten insulation in both multi-ply and single ply systems, installing into cementitious wood fiber decks without pre-drilling. Each #3 square-drive steel fastener pairs with a 3 in. round galvalume-coated steel plate, in black fasteners and gray plates. Available boxed in 3 in., 4 in. and 6 in. lengths with 250 or 500 pieces per box by size.
Key Features:
- No pre-drilling: Can be installed into cementitious wood fiber decks without pre-drilling.
- Versatile systems: Used to fasten insulation in both multi-ply and single ply roofing systems.
- Wide plates: 3 in. (76 mm) round galvalume-coated steel plates provide broad insulation hold-down.
- Square drive: #3 square drive head resists cam-out for faster, cleaner installation.
- Multiple lengths: Offered in 3 in., 4 in. and 6 in. lengths to match insulation thickness.
- Bulk boxes: 3 in. and 4 in. ship 500 per box; 6 in. ships 250 per box.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Johns Manville |
| Sell unit | 1 box (250 or 500 pieces depending on length) |
| Product line | Lite-Deck |
| Available sizes | ['3 in. (500/Box)', '4 in. (500/Box)', '6 in. (250/Box)'] |
| Material | Steel fasteners |
| Plate | 3 in. (76 mm) galvalume-coated steel, round |
| Head type | #3 square drive |
| Available colors | ['Black (fasteners), gray (plates)'] |
| Intended use | Insulation fastening in multi-ply and single ply systems |
| Compatible deck types | ['Gypsum', 'Cementitious wood fiber'] |
Coverage & How Much You Need:
Coverage depends on the fastening pattern specified for your JM roof system; divide the roof area by the required fastener density to determine how many boxes to order per square.
Fit and Compatibility:
Designed for insulation fastening in Johns Manville multi-ply and single ply roof systems on gypsum and cementitious wood fiber decks. Select fastener length for insulation thickness plus required penetration into the deck per the JM specification.
Frequently Asked Questions (FAQ):
Q: What lengths are available?
A: Lite-Deck fasteners come in 3 in., 4 in. and 6 in. lengths.
Q: How many come in a box?
A: The 3 in. and 4 in. sizes ship 500 per box and the 6 in. size ships 250 per box.
Q: Do I need to pre-drill?
A: No, Lite-Deck fasteners install into cementitious wood fiber decks without pre-drilling.
Q: What decks do they work in?
A: They are specified for gypsum and cementitious wood fiber decks.
Q: What drive bit do I need?
A: The fasteners use a #3 square drive head.
Q: What does the plate look like?
A: Each fastener uses a 3 in. round galvalume-coated steel plate; plates are gray with black fasteners.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Lite-Deck is the go-to choice on gypsum and cementitious wood fiber decks where pre-drilling would slow the crew to a crawl. Match the length to insulation thickness plus the deck penetration your JM detail requires, and use a #3 square-drive bit with a depth-setting nose piece to avoid overdriving plates into the facer. The 3 in. galvalume plates give good pull-through resistance on standard polyiso boards.
Wear eye protection when driving fasteners, and check for fastener points or debris protruding below lightweight insulating decks.
Order JM Lite-Deck insulation fasteners in the length and box count your roof system needs.
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