Dimensional Lumber & Plywood Fire Tests

UL – 723 (ASTM E-84, ANSI)“Flame Spread and Smoke Production on Coated Louvered Door Panels

Location: Underwriters Laboratories
Test Date: 8.11.2017

This test determines the surface burning characteristics of the material, specifically the
flame spread and smoke developed indices when exposed to fire. Zero flame spread and 450 smoke production resulted in a class “A” rating.


ASTM E84-16 Test for Surface Burning Characteristics of Building Materials (UL 723, UBC 8-1, NFPA 255)

Location: Intertek
Test Date: 10.21.2016

This report describes the results of the AST E84-16 test for surface burning characteristics of building materials, a method for determining their comparative surface burning behavior. The sample tested was Contego RFB HS Painted Southern Yellow Pine on louvered doors typically used on residential utility closets. What’s remarkable is how well the Contego coating protected even the thin, angled louvers.

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PN-EN 13501-1:2007+A1,2009. “Fire Classification of construction products and building elements”

Location: Instytut Techniki Budowlanej (Poland)
Test Date: 8.23.2016

This test determines the EN Classification of CON-RFB on wood products using test data from reaction to fire tests. It results in an A2FL,s1,d0 Wood Classification.


PN-EN 1366-6:2006. “Fire resistance for service installations. Part 6: Raised access and hollow core floors”
Location: Instytut Techniki Budowlanej (Poland)
Test Date:

Remarkable results on a raised Chip-Board floor panel structure. The test was stopped when the rock-wool, used as sealant around the panel frame, ignited after 45 minutes. CON-RFB would have continued it’s excellent protection of the chip-board had the sealant used been effective.


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 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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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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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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California State Fire Marshal Approval for OSB & Douglas Fir


Architectural Specification for Wood


Original Formula Product Data Sheet


High Solids Product Data Sheet


Material Safety Data Sheet (MSDS)


View Test Data by Substrate


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