Read-only audit · 27 August 2026

Centennial Woods Fire-Performance Claims Audit

Comprehensive review of fire-retardant treatment, Flame Stop II, DRI-One, ASTM testing, ratings, code, WUI, exterior, fireplace, and high-temperature claims.

Centennial Woods Fire-Performance Claims Audit

Audit date: 2026-08-27 UTC. Read-only: no edits, deletes, publishes, or external changes were made.

Executive summary

The live site repeatedly states that Flame Stop II “provides” Centennial Woods products with a “Class A Fire Rating.” This wording appears in the purchasable add-on data on 20 products, PDPs, contractor/exterior pages, fireplace and patio content, a fireproofing article, templates, product JSON, and Product JSON-LD.

The supplied test background does not support that breadth. ASTM reports apply only to the specimens tested and do not establish certification, listing, labeling, ongoing manufacturing inspection, finished-production equivalence, code compliance, exterior/WUI suitability, or safe heat-source clearances. No public DRI-One, ASTM E84, ASTM E2768, FSI/SDI, WUI, ignition-resistant, listed, or labeled claim/report was found in the accessible sources. That absence is positive; the unqualified Class A copy remains the material risk.

Audit evidence and limits

Complete findings table

ID / sourceExact statementProduct/applicationRiskReplacement/actionPriorityPurchase flow? / duplicate
F1. Product metafield custom_fields.add_ons on 20 products: Cody, Laramie, Sundance White, Saratoga, Cheyenne, Sundance Red, Wheatland, Casper, eight bulk paneling records, and two ready-to-install/rip trim records“Fire Retardant: Provides Class A Fire Rating.”Flame Stop II add-on across planks, bulk paneling, trim; profiles/finishes varyDirect unsupported rating; improper test extensionUse the supplied default replacement: optional factory-applied treatment intended to reduce surface flame spread; not noncombustible, listed, labeled, or code-approved; consult design professional/AHJIMMEDIATEYes; duplicated in PDPs, JSON-LD, templates
F2. Public PDPs, e.g. https://www.centennialwoods.com/products/cody-reclaimed-wood-planks-1 and /products/saratoga-reclaimed-wood-planks“Flame Stop II Fire Retardant: Provides Class A Fire Rating. $47.00/box …”Add-on beside price and Add to cartDirect claim at purchase decision pointShort selector copy: “Optional fire-retardant treatment. Intended to reduce surface flame spread; does not make wood noncombustible, listed, labeled, or code-approved. Confirm suitability with your design professional/AHJ.”IMMEDIATEYes; same source as F1
F3. https://www.centennialwoods.com/products/flame-stop-ii and related handles flame-stop-ii-1, flame-stop-ii-trim, flame-stop-ii-ready-to-ripBody effectively empty; title “Flame Stop II”; quantity labels “sq ft of Flame Stop,” “sqft flame stopped,” “sq ft of Flame Stop”Chemical/application-service SKU, not identified tested specimen or finished productAmbiguous identityAdd only after technical/legal approval: chemical vs Centennial application service vs tested specimen vs production product; chemical-manufacturer reports are not proof of Centennial finished-product performanceHIGHYes; name duplicated in add-ons/cart
F4. https://www.centennialwoods.com/pages/contractor-professionals; template page.contractor-professionals-v2.json“Flame Stop II is a fire retardant sealant that provides Centennial Woods products with a Class-A Fire Rating. We recommend adding FlameStop II to any wood that will be installed near fireplaces.”Contractor/professional; wood near fireplacesUnsupported rating; unsafe heat-source/clearance implicationRemove fireplace recommendation. Add: treatment does not establish safe clearance; follow appliance instructions, code, and AHJIMMEDIATEProject conversion; duplicated in exterior pages
F5. https://www.centennialwoods.com/pages/siding, /pages/shiplap-siding, /pages/reclaimed-lumber, /pages/weather-wood-nominal-1x6“Flame Stop II is a fire retardant sealant that provides Centennial Woods products with a Class-A Fire Rating.”Exterior siding, bulk lumber, shiplap, nominal 1x6Exterior/WUI/code implication; extension across profiles/assemblies“Optional treatment may be available for selected profiles. Do not assume exterior, WUI, ignition-resistant, assembly, or code performance. Confirm the exact profile, treatment, assembly, exposure, and AHJ requirements.”IMMEDIATEProject/quote flow; duplicated
F6. https://www.centennialwoods.com/pages/reclaimed-wood-siding-v2; template page.reclaimed-wood-siding-v2.json“...Class-A Fire Rating and fire-resistant performance... near fireplaces or in areas where safety codes require enhanced protection against high temperatures.”Exterior/interior sidingUnsupported rating; code and high-temperature implicationDelete Class A, fire-resistant performance, fireplace, and safety-code language; use F5 limitation plus clearance warningIMMEDIATEPro page; duplicated in local live2.html
F7. https://www.centennialwoods.com/collections/reclaimed-wood-fireplace-mantel“Our wood always has the option for our Flame Stop II treatment, which provides a Class A Fire Rating.”Fireplace mantel/surroundHeat-source/clearance implication; unsupported rating“Wood mantels and surrounds are combustible. Do not use treatment language to determine clearance or suitability. Follow fireplace instructions, code, and AHJ/design-professional direction.”IMMEDIATECollection-to-product flow; search-indexed
F8. https://www.centennialwoods.com/blogs/news/how-to-waterproof-and-fireproof-wood“HOW TO WATERPROOF & FIREPROOF WOOD”; “A Class A fire rating ... will give you peace of mind”; “Flame Stop II (fireproofing)”; “...fireplaces... regions prone to wildfires”; “Keep your home protected ... Class A fire rating!”Homeowner education, fireplaces, wildfire-prone areasFireproof overstatement; WUI/heat-source implicationRetitle “How Fire-Retardant Treatments Affect Wood Surface Flame Spread”; remove fireproof/protected/wildfire/fireplace/Class A language; use default replacementIMMEDIATEContent-to-commerce; JSON-LD headline/description
F9. https://www.centennialwoods.com/blogs/news/house-siding-options“A good solution for this is Centennial Woods’ A-rated flame retardant, Flame Stop II.”Exterior siding/fire-prone areas/insuranceUnsupported rating; insurance and exterior/WUI implicationTreatment is not a substitute for exterior assembly evaluation, WUI/ignition requirement, insurance determination, or code approvalIMMEDIATEContent flow
F10. https://www.centennialwoods.com/blogs/news/exploring-different-types-of-siding-for-a-home“Optional treatments like Flame Stop II (for a Class A fire rating) ... help this reclaimed natural wood perform well in harsh weather conditions.”Exterior sidingImproper extension; exterior performanceSay treatment may reduce surface flame spread only under applicable documentation; no exterior/weather/WUI/assembly/code inferenceIMMEDIATEContent flow
F11. https://www.centennialwoods.com/blogs/news/patio-wall-ideas“...a fire-retardant treatment with a Class A rating keeps the installation safe”; “Near a fire pit or outdoor fireplace, add a fire-retardant sealant”; “...Class A fire rating for installations near fire features.”Patio wall, fire pit, outdoor fireplace/kitchenUnsafe heat-source; exterior/WUI/code implicationRemove treatment-as-safety language. Defer to heat-source manufacturer, required clearances, code, design professional, and AHJIMMEDIATEContent flow; three repeats
F12. https://www.centennialwoods.com/blogs/news/how-to-install-wood-siding“Check ... building codes ... fire ratings”; “Add a flame-retardant coating for added fire protection...”Exterior sidingAmbiguous code implication“Check local requirements; do not assume optional treatment satisfies fire-rating, WUI, ignition, or assembly requirements.”HIGHContent flow
F13. https://www.centennialwoods.com/blogs/news/shiplap-vs-tongue-and-groove-siding“In fire-prone areas, a flame-retardant coating adds protection for either choice.”Shiplap/tongue-and-groove exteriorExterior/WUI implicationTreatment is not a substitute for profile-specific exterior/WUI/assembly documentation or AHJ approvalHIGHContent flow
F14. https://www.centennialwoods.com/blogs/news/types-of-wood-finishes“...protective sealants to prevent fire and moisture damage.”General finishes“Prevent fire damage” overstatement“Optional moisture and fire-retardant treatments; treatment is intended to reduce surface flame spread and does not prevent fire damage.”HIGHNo direct cart
F15. https://www.centennialwoods.com/blogs/news/vinyl-siding-vs-wood-siding“Flame Stop II ... shields against fire damage. These treatments enhance the durability and safety of our wood siding...”Exterior siding comparisonExterior safety implicationTreatment may alter surface flame-spread behavior under documented conditions; no overall siding safety/WUI/code inferenceHIGHContent flow
F16. Fireplace inspiration: contemporary-uses-for-reclaimed-wood, 15-reclaimed-wood-design-ideas, six-ways-to-utilize-shiplap, reclaimed-wood-on-netflixs-instant-dream-home, reclaimed-wood-mantel-ideas, mid-century-wood-paneling-design-guide, and Cheyenne PDPFireplace surrounds/mantels are shown or described without combustible-material/clearance warningFireplace surrounds/mantelsAmbiguous but potentially unsafe when paired with F4/F7Add: “Design imagery is not installation guidance. Wood is combustible; maintain required clearances and follow appliance, code, and AHJ requirements.”HIGHSome PDP/collection; repeated library pattern
F17. Product HTML/JSON/JSON-LD for Saratoga, Wheatland, Cheyenne, Sundance White/Red, Cody, Laramie and trimSource add-on content carries the rating claim into Product JSON-LD descriptionsSearch/merchant representationStructured-data/feed duplicationCorrect source content, then verify JSON-LD/product feeds; do not patch visible HTML onlyIMMEDIATEYes; duplicate F1/F2
F18. Theme config/settings_data.json and cart/footer“Orders with Centennial Seal or Flame Stop II will take an additional 7-21 business days to arrive.”LogisticsAcceptable factual lead-time statement; insufficient limitation disclosureRetain as logistics copy; link treatment limitation at selectorLOWYes; repeated theme/cart/footer
F19. MAIN templates page.contractor-professionals-v2.json, page.reclaimed-wood-siding-v2.json, page.reclaimed.json, page.centennial-lab.json; local live2.html“Can be Purchased with Pre-Applied Protective Sealant and/or Fire Retardant Sealant”; “UV / Moisture Sealant & Fire Retardant Available.”Exterior/interior product cardsAcceptable availability only if qualified; misleading beside exterior/durability claimsAppend that availability does not establish rating, listing, label, code, exterior/WUI performance, or safe clearanceHIGHPro/project flow; four templates
F20. External Material Bank: https://www.materialbank.com/partner/centennialwoods“Planks are suitable for commercial and residential projects... interior and exterior uses... moisture proof Centennial Seal and a Class A fire retardant called Flamestop II.”Distributor/specifier listingExternal commercial/exterior/Class A implicationRequest treatment-only, specimen-limited language; remove “moisture proof” and Class A unless approved current listing/label existsIMMEDIATEYes—specifier discovery
F21. External resellers: mymaterialwarehouse.com, rdrtechnologies.com, valuebuildingsupply.comReseller pages describe Flame Stop II as suitable for exterior wood, “non-combustible,” or Class AChemical product, not necessarily Centennial finished productChemical claims may be mistaken for Centennial claimsDo not quote reseller/chemical claims as Centennial finished-product performance; management/legal decide noticesHIGHIndirect/project sales

Negative findings

No accessible hit for DRI-One, ASTM E84, ASTM E2768, WUI, ignition resistant, or FSI/SDI was found. No ASTM or DRI-One report was found in accessible local PDFs. No direct fire-rating text was found in audited public image alt/title attributes. The fireproof article’s infographic alt text should still be visually reviewed. GREENGUARD/FSC “certified” references are environmental/indoor-air claims, not fire certification.

Immediate checkout and sales-flow corrections

  1. Replace the add-on wording in custom_fields.add_ons across all 20 products.
  2. Add limitations at the treatment selector and document the chemical/service/specimen/production distinction.
  3. Review the four Flame Stop II SKU bodies and quantity labels.
  4. Verify PDP HTML, cart, product JSON, Product JSON-LD, product feeds, and marketplace exports after source correction.
  5. Remove treatment-as-safety language for fireplaces, stoves, grills, fire pits, chimineas, high-temperature areas, and “safety codes.”
  6. Add combustible-material/clearance warnings to fireplace, mantel, and surround content.
  7. Hold Class A, A-rated, fireproof, prevents fire damage, WUI, ignition resistant, and code-compliant language pending approval.

Approve or reject: any Class A wording and its exact profile/finish/thickness boundary; Flame Stop II vs DRI-One naming; publication of any E84 result and exact specimen/test limitations; disclosure of the E2768 failure if E84 is referenced; any production inspection/listing/labeling evidence; exterior/WUI/ignition/decking/siding/fireplace/stove/grill/fire-pit/chiminea suitability; combined “certified/safe/commercial” impressions; and external dealer corrections.

External correction list

Material Bank is the identified Centennial-branded distributor/specifier correction. Reseller pages for Material Warehouse, RDR Technologies, and Value Building Supply need management/legal review where Centennial is named or linked. Authenticated marketplace/dealer inventory remains open because those systems were not connected.

Post-publish verification