JM Corbond III

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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.

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.

Resi CC SPF 223 190x122


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)

Data Sheet

JM Corbond III Data Sheet


JM Corbond SDS - A
JM Corbond SDS - A (ES)
JM Corbond Closed-cell SDS - B
JM Corbond Closed-cell SDS - B (ES)


Product Selector Guide
Exploring the Efficacy of High Lift Spray Foam Insulation White Paper
JM Spray Foam Overview Brochure
TechConnect Sell Sheet
JM Spray Foam Trial and Technical Support Brochure
JM Corbond III Seasonal FAQ
JM Spray Foam Parts and Equipment (Fusion AP)

STC Rating Documents

Acoustical Assemblies STC Rating Reference Guide

Installation Instructions

JM Corbond III SPF Installation Guide
SPF Processing Parameters
SPF Change-over Procedure
SPF Change-over Procedure (ES)
SPF Safety Warning Sign
SPF Health and Safety Sheet
Corbond Daily Work Log


JM Corbond Re-Occupancy Certificate
JM Corbond Insulation Certificate

Spray Foam Certification

SPF Certification Overview


Technical Bulletins

JM Corbond III Air Barrier Advantage
Hybrid ccSPF + Fiberglass Wall Recommendations

Application Guides

Penetrations - Ambient Temperature
Below Grade Wall
Change in Substrate
Crawl Space
Expansion Joint
Floor Slab to Foundation Wall
Framed Floor to Foundation Wall
High Temperature Penetrations
Interstory Connections
Substrate Joints and Defects
Unvented Attic Insulated Roof Deck
Unvented Attic Insulated Roof Deck V2
Vaulted Ceiling
Vented Attic
Wall Corner
Window Head

Evaluation Reports

Corbond III IAPMO Report
Environmental Product Declaration Spray Polyurethane Foam Insulation (HFC) Report
Life Cycle Assessment of Spray Polyurethane Foam Insulation Report


JM Corbond III Greenguard
JM Corbond III Greenguard Gold
JM Corbond III

Case Studies

All-American House Case Study
Jay Peak Resort Case Study
Vision House Case Study

Project Profile

Denny Way Project Profile


Spray Foam Overview


SPF Changeover Procedure


AP Fusion SPF Gun Cleaning and Assembly


SPF E03 Hose Break Diagnosis


SPF E04 FTS or Thermocouple Diagnosis

JM Overview Video


What is Spray Foam? (ACC)

Available Documents