Applicable Standards

Nailboard meets ASTM C 1289 and the physical property requirements of Federal Specification HH-I-1972/Gen and HH-I-1972/2.

Factory Mutual and Underwriters Laboratories

Nailboard is approved for Factory Mutual Class 1-60 and 1-90 assemblies with BUR and single ply membrane systems. Nailboard is approved and classified for use in specific Underwriters Laboratories, Inc. Class A constructions, roof/ceiling hourly fire-rated assemblies, and insulated metal deck assemblies. Nailboard also is classified by Underwriters Laboratories Canada.

For current information on Johns Manville FM or UL approved systems, contact a JM Technical Service Specialist, Sales Representative or consult the current FM Approval Guide or UL Roofing Materials and Systems Directory.

Other Approvals

Nailboard complies with CCMC 12786-R.

Nailboard incorporates APA Rated Exposure 1 OSB.

Nailboard meets California State Insulation Quality Standards and Title 25 Foam Flammability Criteria. Nailboard also meets the requirements of BOCA, ICBO, SBCCI and others.

Because this insulation complies with both FM 4450 and 4470, when tested in roof membrane assemblies, and is listed as a FM Class 1 roof insulation, there is no requirement for the   "½" (13 mm) gypsum wallboard or equivalent thermal barrier," when applied in steel deck roofing applications to meet code requirements (e.g., SBCCI, BOCA, ICBO, etc.). The local code official does have final discretion for approval of roof assemblies. Fire-rated roof/ceiling assemblies ("P" designs) may require the use of a thermal barrier.

JM insulation products must be protected from open flame and kept dry at all times. Install only as much insulation as can be covered the same day by completed roof covering material. JM will not be responsible for specific building and roof design by others, for deficiencies in construction or workmanship, for dangerous conditions on the job site or for improper storage and handling.Technical specifications as shown in this literature are intended to be used as general guidelines only. Consult JM for detailed specifications.

See Section 1.9 for health and safety information. Refer to the Material Safety Data Sheet and Product label prior to using this product.

Technical Data

For Use Over Metal Decks

The minimum thicknesses of Nailboard insulation over metal decks are as follows: