United States / Build / FSR pressure-treated western red cedar shakes and shingles

FSR pressure-treated western red cedar shakes and shingles

Name: FSR pressure-treated western red cedar shakes and shingles
Brand: FSR Treatment, Inc.

This is a listed roofing assembly. Listing 4150-1735:0100. This site cites ASTM E108 / UL 790. Match the model and orientation.

Kind: listed-assembly. Brand: FSR Treatment, Inc.. Listing evidence: OSFM WUI handbook 2026-08-25. Page reviewed 2026-08-25. JSON (CC BY 4.0)

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Can you use it here?

Enter your ZIP to see which local requirement this meets.

QAI Class A is a covering result on a complete assembly that uses Class B treated FSR shakes or shingles with a specified noncombustible covering or ASTM D3909 cap sheet. ASTM E108 is the test standard on attributes.

This record has 2 listings: OSFM 4150-1735:0100 and ICC-ES ESR-1410 (ESR-1410). Warnings spell the Class A / Class B / cap-sheet trap. A shake standing alone is not that QAI covering result.

Lot comparison is where those two listing rows meet a place. Class A here is the QAI stack with the ASTM D3909 cap sheet or the specified noncombustible covering, not a treatment label on the cedar.

Documented attributes

Each value below points to its field-level manufacturer, official-listing, test-report, or standard-body evidence.

Attribute	Value	Evidence source
Form
Assembly role	roof covering	Fire Smart Roofing treatment options (manufacturer)
Material
Material	wood	Fire Smart Roofing treatment options (manufacturer)
Fire
Fire rating	class a	Fire Smart Roofing treatment options (manufacturer)
Test standard	astm e108	Fire Smart Roofing certifications and test standards (manufacturer)

Where this product goes

FA Exhibit ROF-100. The roof system, named

Published requirement matches

These links are generated from the cited attributes above. They do not decide installation or a project result.

IBHS Base Class A roof covering · California and Oregon program applicants
Kittitas high/extreme Class A roof covering · Unincorporated Kittitas County high and extreme fire-hazard areas outside a fire department
Kittitas low/general Class C roof floor · Unincorporated Kittitas County, subject to more restrictive hazard-class rows
Kittitas moderate Class B roof floor · Unincorporated Kittitas County moderate fire-hazard areas outside a fire department
2006 Utah UWUI Class A roof covering · Utah local compliance agencies adopting the 2006 Utah Wildland-Urban Interface Code

Program	ID / source	Evidence date	Expires	Status
CAL FIRE BML	4150-1735:0100 · Search BML for 4150-1735:0100	2026-08-25	2027-06-30	listed
ICC-ES	ESR-1410 · Record	2026-08-25		listed

Tests and programs cited

ASTM E108 / UL 790 · test-method
OSFM BML · listing-program
ICC-ES · listing-program

Models named on the listing

Model	Application
FSR Class B treated shingles
FSR Class C treated shingles
FSR Class B treated shakes
FSR Class C treated shakes

Specification notes

Class A applies only to the complete QAI assembly using Class B treated FSR shakes or shingles with the specified noncombustible covering or ASTM D3909 cap sheet. Match the treatment class, deck, underlayment, starter course, fasteners, and every installation condition.
QAI CERus-1032 requires removal of existing roof coverings for reroofing and limits treated cedar species, sheathing, underlayment, and fasteners as stated in the report.

Can I use this here

Local force

The rule and every matching product for the United States

Requirement constraints (5)

Each table compares this product's documented attributes with one published requirement. The comparison does not change from place to place, so it is printed once.

Kittitas high/extreme Class A roof covering matched
Field	Required	Documented value	State
Assembly role	Assembly role = roof covering	roof covering	matched
Fire rating	Fire rating = class a	class a	matched

Kittitas low/general Class C roof floor matched
Field	Required	Documented value	State
Assembly role	Assembly role = roof covering	roof covering	matched
Fire rating	Fire rating is one of class a, class b, class c	class a	matched

Kittitas moderate Class B roof floor matched
Field	Required	Documented value	State
Assembly role	Assembly role = roof covering	roof covering	matched
Fire rating	Fire rating is one of class a, class b	class a	matched

2006 Utah UWUI noncombustible roof covering undocumented
Field	Required	Documented value	State
Assembly role	Assembly role = roof covering	roof covering	matched
Noncombustible	Noncombustible = Yes	Not documented	undocumented

2006 Utah UWUI Class A roof covering matched
Field	Required	Documented value	State
Assembly role	Assembly role = roof covering	roof covering	matched
Fire rating	Fire rating = class a	class a	matched

Sources

OSFM Building Materials Listing (live database) — CAL FIRE OSFM (listing-body). Accessed 2026-08-25.
ICC-ES ESR-1410 directory record — ICC Evaluation Service (listing-body). Accessed 2026-08-25.
QAI CERus-1032 — FTX and FSR fire-retardant-treated shingles and shakes — QAI Laboratories (official). Accessed 2026-08-25.
FSR pressure-impregnation treatment process — Fire Smart Roofing / FSR Treatment, Inc. (manufacturer). Accessed 2026-08-25.
Fire Smart Roofing treatment options — Fire Smart Roofing / FSR Treatment, Inc. (manufacturer). Accessed 2026-08-25.
Fire Smart Roofing certifications and test standards — Fire Smart Roofing / FSR Treatment, Inc. (manufacturer). Accessed 2026-08-25.

FSR pressure-treated western red cedar shakes and shingles. FireApproved. https://fireapproved.com/materials/fsr-treatment-inc-model-fsr-pressure-treated-no-1-grade-western-red/. Last verified 2026-08-25.