FRX® Exterior Fire Retardant Treated Wood

• Arch Wood Protection, Inc.Developed Dricon® fire retardant treated wood for interior applications and Wolmanized® Outdoor® wood, among other brands of pressure-treated wood

• CHEMCO Inc.Developed FTX™ fire retardant shakes and shingles

Introduction

FRX® exterior FRT wood developed by: Arch Wood Protection, Inc., and CHEMCO, Inc.

FRX® Fire Retardant Treated Wood

• Pressure-treated lumber and plywood that is chemically treated to reduce the spread of flames in applications directly exposed to weather.• May be substituted for materials classified as

noncombustible in certain building types designated by model building codes and requiring ASTM D 2898 conformance.

• Combines the beauty and versatility of wood with the fire safety and insurance advantages of noncombustible materials.

Typical Applications

• Exterior decks• Balconies• Stairways• Covered walkways• Siding• Trim & molding• Open air roof systems• Stables• Soffit & fascia• Construction staging• Scaffolding

Advantages of FRX®

Wood• Complies with major building codes

(issued ESR-1159)• Tested, proven fire performance• Stringent quality control• From the people who developed Dricon® FRT wood

and the people who developed FTX™ shakes and shingles

Fire Performance Tests

FRX® wood complies with the following requirements for exterior FRT wood:

• ASTM E 84 Tunnel TestExtended to 30 minutes with the flame not progressing

more than 10.5 feet beyond burners and showing no evidence of progressive combustion.

• ASTM D 2898 Accelerated Weathering TestAlso referred to as the “800-inch rain test,” FRX® lumber

and plywood maintain flame spread indexes of less than 25.

Strength Properties

Strength of FRX® wood has been tested following ASTM D 143 and MIL-L-19140E.

Strength Design Factors ―FRX® Lumber Compared to Untreated Lumber (=1.00)

Applicable at Ambient Temperatures Up to 80°F

SYP Doug fir

Compression Parallel 1.00 1.00

Horizontal Shear 0.95 0.99

Tension Parallel 0.85 0.89

Bending: Modulus of Elasticity, E 1.00 1.00

Extreme Fiber Stress, Fb 0.92 1.00

Product Processing

• Treating– Treatment of FRX® wood is performed

at properly equipped and supervised treatment plants in accordance with industry standards

• Kiln drying– Following treatment, FRX® wood is re-dried to moisture

content of:• 19% or less for lumber• 15% or less for plywood

Product Confidence

• Quality control– Comprehensive quality control

conducted by third-party agency– Provides assurance that both the FRX® fire

retardant chemical and FRX® wood are consistently produced to meet performance standards dictated by the model building codes

Product Information

• Lumber and plywood sizes– All common lumber dimensions and

plywood thicknesses– Size is limited only to treating plant’s ability

to treat, dry, and handle

• Species available– Douglas fir– Southern yellow pine– Spruce– Western red cedar lumber– Hem-fir lumber

Notes on Use

1. FRX® treatment does not substantially change the physical characteristics of ordinary lumber.

2. FRX® wood should not be installed where exposed to high temperatures in interior applications, nor where it will contact the ground.

3. When staining, apply only non-filming oil-based stain to clean, dry surfaces and follow the manufacturers’ recommendations.

4. Take same common sense precautions when handling FRX® treated wood as untreated wood or other building materials.

For more information, contact your supplier of FRX® wood or visit www.useFRTW.com or call Arch Wood Protection at 866-use-FRTW