Oriented Strand Board (OSB) Fire Tests

ASTM D4017  Results of Volatile Organic Compound Content (VOC) Testing of Contego (High Solids) Intumescent

Location: KTA
Test Date: 10.16.18

Once again Contego (HS) achieves a superior zero VOC rating.

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ASTM D4017  “Volatile Organic Compound Content”

Location: KTA
Test Date:  06.11.2007

Contego Original Intumescent isn’t a LOW VOC product, it is a NO VOC product with VOC levels too low for currently available technology to detect.

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UBC – 26.2  “Test Methods for the Evaluation of Thermal Barriers

Location: Omega Point
Test Date:  11.27.2002

This test is designed to last for 15 minutes with some HUD requirements calling for 20 minutes. The Contego product, applied at a rate of 20 mils (dft) exceeded both requirements and the test terminated shortly thereafter. The specimen was atypically thin (7/16″) and was intentionally split down the middle and gapped 1/8″ to put it at a severe disadvantage.

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UBC – 26.3  “Room Fire Test Standard for Interior of Foam Plastic Systems”

Location: SwRI
Test Date:  11.05.2002

After 11 minutes after the start of the test, all indicators – smoke generation, temperature, and threshold heat rise, were all actually declining and continued to decline until the test was terminated.

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ASTM D3359  “Standard Methods For Measuring Adhesion by Tape Test”

Location: Touchstone Laboratories
Test Date:  01.27.2004

Using both methods available under ASTM D-3359, adhesion was 100% with 0% paint loss by peeling or removal on a completely nonporous surface.

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ASTM E-84.98  (UL-723, ANSI A-2.5, NFPA 255 & UBC 8-1 & 42-1)


“Flame Spread and Smoke Production on OSB”

Location: Intertek
Test Date:  10.06.2005

As a control, we applied Contego at a rate of rate of 60 sq. ft./gallon and limited flame spread to 10 and smoke development to 10.

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“Flame Spread and Smoke Production on PMDO”

Location: Intertek
Test Date:  10.06.2005

We tested Dynea paper fascia overlay on LP’s PMDO Smooth Suffit and limited flame spread to 10 and smoke development to 25 with an application rate of 60 sq. ft./gallon. The paper fascia adds an enormous amount of fuel to the assembly, so the results were particularly outstanding.

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UL – 723 (ASTM E-84, ANSI A-2.5, NFPA 255 & UBC 8-1 & 42-1)  “Flame Spread and Smoke Production on Douglas Fir” (2 Coats)

Location: Underwriters Laboratories
Test Date:  01.03.2007

This is a standard flame spread and smoke production test. Contego was applied thinner than normally recommended, 2 coats at a spread rate of 145 sq. ft. per gallon, versus our specified 2 coats at 130 sq. ft. per gallon. Regardless, the tests results show an averaged outcome of 0 flame spread and 0 smoke production. Contego gets better flame spread and smoke production results on Douglas Fir plywood than other intumescents get on steel.

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ASTM D4541-09e1 “Pull-Off Strength of Coatings Using Portable Adhesion Testers”

Test Name:  ASTM-D4541-09e1
Location: KTA
Test Date: 09.25.2013

Our ASTM D-4541 test was conducted September 25, 2013 at KTA and showed over 630 PSI, more than twice that of our closest competitor and four times that of others.  Combined with results of our ASTM D3359 test using both the cross cut and ribbon cut methods with 0% loss, nothing beats Contego’s adhesion.

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NFPA 286  “Standard Methods of Fire Test for Evaluating Contribution of Wall & Ceiling Interior Finish to Room Fire Growth”

Location: Omega Point
Test Date:  08.22.2002

Contego passed the 15 minute test well within the limits of thermal performance.

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BSS 7239-88  “Test Method for Toxic Gas Generation by Materials On Combustion”

Location: Omega Point Laboratories
Test Date:  02.06.2002

We measured toxicity native in the can as well as in a burn condition using a cone colorimeter. The results show that Contego is completely non-toxic. No other product comes close.

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California State Fire Marshal Approval for OSB & Douglas Fir


Architectural Specification for Wood


Sample QC Reports (Other than UL Listing)

Contego is perhaps the only intumescent manufacturer that uses dual redundant QC analysis of our entire production. We use UL, Materials Analytical Services and MAGI to critically evaluate our product on an ongoing basis using spectroflouroscopic analysis. Note how each graph over the past nine years is essentially identical.

June 2011 Report

September 2010 Report

June 2009 Report

February 2009 Report

November 2008 Report

November 2006 Report

July 2006 Report

May 2004 Report

January 2004 Report

October 2003 Report


Original Formula Product Data Sheet


High Solids Product Data Sheet


Material Safety Data Sheet (MSDS)



View Test Data by Substrate


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