JM Corbond III

Offering a high R-Value per inch, Johns Manville Corbond® III closed-cell spray polyurethane foam provides air sealing and moisture control in a single install step.

Data Sheet

SDS - A

SDS - B

Product Guide

Johns Manville Corbond^® III closed-cell spray polyurethane foam insulation offers and R-Value of R-7 per inch and can be applied in a single pass to a maximum of 3.5 inches, providing superior thermal performance with seamless air sealing and moisture control in a single step. Multiple immediate passes, with no wait time, may also be applied. With high yield and excellent adhesion, it's an ideal choice for high-performing energy efficient commercial, residential and industrial applications.

Advantages

Complete Coverage: Expands and adheres without shrinking or settling.
Energy-Efficient: Reduces air and moisture infiltration to the building envelope and provides continuous coverage for high thermal performance.
Air Barrier: Prevents leaks when installed at 1” thickness or more.
Moisture Performance: Resists mold growth; meets current vapor retarder codes.
Wide Application Temperature Range: Can be applied between 20°F and 120°F , delivering consistent performance with seasonal versatility.
Faster Installation: Spray easily in a single pass from a minimum of .5" to a maximum of 3.5”. Multiple immediate passes, with no wait time, may also be applied. See Data Sheet for complete information.
Commercial Approvals: NFPA 285 assembly approvals. Appendix X approval for application in unoccupied attics and crawl spaces without a prescriptive ignition barrier or coating.

SPF Acceptance Criteria	ASTM AC377	Pass
Flame Spread	ASTM E84	≤ 25
Smoke Development	ASTM E84	≤ 450
Fungi Resistance	ASTM C1388	Pass
Dimensional Stability	ASTM D2126	< 15% change in volume
Nominal Density	ASTM D1622	2 pcf
Closed-Cell Content	ASTM D6226	> 90%
Compressive Strength (1”)	ASTM D1621	36 psi
Water Absorption	ASTM D2842	0.9%
Water Vapor Transmission	ASTM E96	0.61 perms @ 1.5"
Air Permeance	ASTM E2178-03	0.00055 (L/s)/m at 75 Pa
Sound Transmission	ASTM E90-90, ASTM E413-87	36 (STC)