Chemco, Inc.
Building Products Listing Program
- Chemco, Inc.
- Fire Retardant Treated Wood Products
- Ferndale, WA
- B1152
- B1152-1
- November 7, 2024
- November 7, 2024
- N/A
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CAN/ULC S102-18
“Standard Method of Test for Surface Burning Characteristics of Building Materials and Assemblies.
ASTM E84-22
“Standard Test Method for Surface Burning Characteristics of Building Materials”, extended an additional 20 minutes (ASTM E84 30-Minute Duration).
ASTM E2768-11(R2018)
“Standard Test Method for Extended Duration Surface Burning Characteristics of Building Materials (30 min Tunnel Test)”.
ASTM D2898-10(R2017)
Standard Practice for Accelerated Weathering of Fire-Retardant-Treated Wood for Fire Testing.
ASTM D3201/D3201M-20
“Standard Test Method for Hygroscopic Properties of Fire-Retardant Wood and Wood-Base Products”.
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FRX, Saferwood-FX, Thermex-FX, Mataverde, Flame Repel Fire Retardant Treated Lumber
FRX, Saferwood-FX, Thermex-FX, Mataverde, Flame Repel Fire Retardant Treated Plywood -
Species:
Lumber Grades: Southern Yellow Pine (SYP), Douglas-fir (DF), Spruce-Pine-Fir (SPF), Western Red Cedar (WRC), Redwood (RW), Hemlock-Fir (HF)
Engineered Wood Structural Panels: Southern Yellow Pine (SYP), Douglas-fir (DF), Western Red Cedar (WRC), White Spruce (WS), Western Hemlock-Fir.Label(s):
Example labels found in QAI certified FRX, Saferwood-FX, Thermex-FX, Mataverde, Flame Repel Fire Retardant Treated Wood products are outlined below:
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The following outlines FRX, Saferwood-FX, Thermex-FX, Mataverde, Flame Repel Fire Retardant Treated Wood product ratings:
Table 1. FRX, Saferwood-FX, Thermex-FX, Mataverde, Flame Repel Fire Retardant Treated Lumber Surface Burning Characteristics per CAN/ULC S102.
SPECIES GRADE
Flame Spread Index
(FSI)1
Smoke Developed Index
(SDI)
LUMBER: SYP, DF, SPF, WRC, RW, HF
≤ 252
≤ 100
WOOD STRUCTURAL PANEL: SYP, SPF, DF, WRC, WS, HF
≤ 252
≤ 100
Note 1: Flame spread index is determined after weathering in accordance with ASTM D2898 per the 2020 National Building Code of Canada Section 3.1.4.8 clause 3) for exterior grade products.
Note 2: Flame spread index complies with Section 3.1.4.5 of the 2020 National Building Code of Canada Section 3.1.4.5 clause b) flame spread rating requirements.
Table 2. FRX, Saferwood-FX, Thermex-FX, Mataverde, Flame Repel Fire Retardant Treated Lumber Surface Burning Characteristics per ASTM E84 (Extended) / ASTM E27681
PRODUCT
SPECIES
Flame Spread Index
(FSI)
Smoke Developed Index
(SDI)
Flame Front2
LUMBER:
SYP, DF, SPF, WRC, RW, HF
< 25
< 450
< 10.5 feet.
WOOD STRUCTURAL PANEL3:
SYP, DF, WS, WRC, HF
< 25
< 450
< 10.5 feet.
Note 1: Flame spread index is determined after weathering in accordance with ASTM D2898 for exterior grade products.
Note 2: No evidence of significant progressive combustion after extended 20 minutes duration.
Note 3: Testing of wood panels was conducted without ripping or longitudinal cut of 1/8’’ (0.375 inches) included.
FRX, Saferwood-FX, Thermex-FX, Mataverde, Flame Repel Fire Retardant Treated Lumber products strength adjustment factors are outlined in QAI Code Evaluation Report CERUS-1031. Strength adjustments outlined in the noted CERUS-1031 should be used in conjunction with the approved wood design methodology where fire-retardant treated wood products are used in load-bearing applications (National Design Specification USA / CSA 086 Canada).
FRX, Saferwood-FX, Thermex-FX, Mataverde, Flame Repel Fire Retardant Treated Wood Structural Panel products strength adjustment factors are outlined in QAI Code Evaluation Report CERUS-1042. Strength adjustments outlined in the noted CERUS-1042 should be used in conjunction with the approved wood design methodology where fire-retardant treated wood products are used in load-bearing applications (National Design Specification USA / CSA 086 Canada).
FRX, Saferwood-FX, Thermex-FX, Mataverde, Flame Repel products have less than 28% moisture content when tested in accordance with ASTM D3201 at a 92 percent-relative humidity.
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