JM Corbond Open-cell

Offering incredible yield, air isolation, R-value and acoustical performance, Johns Manville Corbond® Open-cell Spray Foam seals all voids and gaps to virtually eliminate air leakage.

Data Sheet

SDS - A

SDS - B

Product Guide

Johns Manville Corbond^® Open-cell Spray Foam is a lower density, nonstructural insulation that offers an R-Value of R-3.8 per inch. It delivers high yield, minimizes sound transmission and virtually eliminates any air leakage. It's designed to improve energy efficiency for a wide variety of residential, commercial and industrial applications and can act as an effective air barrier.

Advantages:

Energy-Efficient: Helps to improve energy efficiency by filling in gaps and cracks while creating an air seal.
Air Barrier: Air-impermeable at 3.75”.
Sound Transmission: Performs well acoustically when used in an assembly.
Installation: Provides high yield with superior sprayability at an exceptional value and low odor. Meets requirements for application without an ignition barrier attics and crawl spaces.

SPF Acceptance Criteria	ASTM AC377	Pass
Flame Spread	ASTM E84	≤ 25
Smoke Development	ASTM E84	≤ 450
Fungi Resistance	ASTM E283	Pass
Dimensional Stability	ASTM D2126	< 15% change in volume
Nominal Density	ASTM D1622	0.5 pcf (normal)
Open-Cell Content	ASTM D6226	> 92%
Water Vapor Transmission	ASTM E96	26.5 perms @ 2"
Air Permeance	ASTM E2178-03	< 0.02 (L/s)/m
Sound Transmission	ASTM E90-90, ASTM E413-87	38 (STC)