Skip to content
Johns Manville All Purpose Fasteners, #14 x 20 in. Phillips Head Steel Roofing Fastener, Grey, 250-Carton
Regular price $2,032.67Johns Manville All Purpose Fasteners, #14 x 20 in. Phillips Head Steel Roofing Fastener, Grey, 250-Carton
These are Johns Manville All Purpose #14 Phillips-head fasteners, 20 in. long, in grey, supplied as 250 pieces per carton. The steel fasteners are FM Approved and Miami-Dade County Approved for commercial roofing attachment. Use them within Johns Manville roofing assemblies where very deep insulation builds require extra-long fasteners.
Key Features:
- FM Approved: The fastener is listed as FM Approved for commercial roofing applications.
- Miami-Dade Approved: The fastener is Miami-Dade County Approved, supporting use in high-wind specifications.
- Extra-long 20 in. shaft: The 20 in. length reaches through very thick insulation and cover board stacks into structural decks.
- Phillips drive: A #14 Phillips head installs with standard roofing screwguns.
- Bulk carton: Ships as 250 pieces in one carton, sized for full roofing jobs.
- Steel construction: Made of steel with a grey finish.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | Johns Manville |
| Manufacturer model | 70000754 |
| Sell unit | 1 carton of 250 fasteners |
| Product line | All Purpose Fasteners |
| Fastener size | #14 |
| Length | 20 in. |
| Drive type | Phillips (Phil) |
| Color / finish | Grey |
| Material | Steel |
| Pack quantity | 250 pieces per carton (pieces per box: 250; pieces per carton: 250) |
| Approvals | FM Approved; Miami-Dade County Approved |
| Weight | 47 lb per carton (gross, dealer sheet) |
| Intended use | Commercial roofing attachment of membranes, insulation and related components |
Coverage & How Much You Need:
Fastener quantity depends on the specified attachment pattern for the insulation and membrane; one carton provides 250 fasteners. Size the order from the fastener count in the roofing system specification.
Fit and Compatibility:
Intended for use within Johns Manville commercial roofing systems, attaching insulation, cover boards and membranes per the system specification. Fastening pattern, deck type and required length must follow the assembly specification; compatible JM membranes and insulation are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in the carton?
A: Each carton contains 250 #14 x 20 in. grey steel All Purpose fasteners with Phillips drive.
Q: What length should I choose?
A: Fastener length must cover total insulation thickness plus the required deck penetration; 20 in. suits very thick multi-layer insulation builds.
Q: Are these approved for high-wind areas?
A: Yes, the item is listed as FM Approved and Miami-Dade County Approved; verify the specific system approval for your project.
Q: What driver do these need?
A: They have a #14 Phillips head, so use a Phillips bit in a roofing screwgun or suitable drive tool.
Q: How heavy is a carton?
A: The dealer sheet lists 47 lb gross weight per carton.
Q: Can I use them with any membrane?
A: They are Johns Manville fasteners intended for JM commercial roofing systems; confirm compatibility with the specified assembly before use.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
All Purpose fasteners are JM's general-use commercial roofing screws for mechanically attaching insulation, cover boards and membranes. At 20 in., these are reserved for deep insulation stacks over thicker decks where shorter fasteners cannot reach the specified penetration. Keep long fasteners square to the deck while driving so they do not bow or bind, and pair with the plates or sizes called out in the JM assembly spec.
Follow the fastener count, spacing and deck penetration specified by the roofing system manufacturer and local code, and wear eye protection when driving fasteners.
Order the Johns Manville #14 x 20 in. All Purpose fasteners, 250-carton, for deep commercial roofing attachment.
Product Documents:
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
